1 /* |
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2 * Copyright (c) 2004, 2015, Oracle and/or its affiliates. All rights reserved. |
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3 */ |
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4 |
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5 /* crypto/engine/e_pk11.c */ |
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6 /* |
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7 * This product includes software developed by the OpenSSL Project for |
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8 * use in the OpenSSL Toolkit (http://www.openssl.org/). |
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9 * |
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10 * This project also referenced hw_pkcs11-0.9.7b.patch written by |
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11 * Afchine Madjlessi. |
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12 */ |
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13 /* |
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14 * ==================================================================== |
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15 * Copyright (c) 2000-2001 The OpenSSL Project. All rights reserved. |
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16 * |
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17 * Redistribution and use in source and binary forms, with or without |
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18 * modification, are permitted provided that the following conditions |
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19 * are met: |
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20 * |
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21 * 1. Redistributions of source code must retain the above copyright |
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22 * notice, this list of conditions and the following disclaimer. |
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23 * |
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24 * 2. Redistributions in binary form must reproduce the above copyright |
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25 * notice, this list of conditions and the following disclaimer in |
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26 * the documentation and/or other materials provided with the |
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27 * distribution. |
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28 * |
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29 * 3. All advertising materials mentioning features or use of this |
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30 * software must display the following acknowledgment: |
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31 * "This product includes software developed by the OpenSSL Project |
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32 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
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33 * |
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34 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
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35 * endorse or promote products derived from this software without |
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36 * prior written permission. For written permission, please contact |
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37 * [email protected]. |
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38 * |
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39 * 5. Products derived from this software may not be called "OpenSSL" |
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40 * nor may "OpenSSL" appear in their names without prior written |
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41 * permission of the OpenSSL Project. |
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42 * |
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43 * 6. Redistributions of any form whatsoever must retain the following |
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44 * acknowledgment: |
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45 * "This product includes software developed by the OpenSSL Project |
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46 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
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47 * |
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48 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
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49 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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51 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
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52 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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53 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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55 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
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57 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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58 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
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59 * OF THE POSSIBILITY OF SUCH DAMAGE. |
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60 * ==================================================================== |
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61 * |
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62 * This product includes cryptographic software written by Eric Young |
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63 * ([email protected]). This product includes software written by Tim |
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64 * Hudson ([email protected]). |
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65 * |
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66 */ |
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67 |
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68 #include <stdio.h> |
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69 #include <stdlib.h> |
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70 #include <string.h> |
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71 #include <sys/types.h> |
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72 #include <unistd.h> |
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73 #include <strings.h> |
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74 |
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75 #include <openssl/e_os2.h> |
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76 #include <openssl/crypto.h> |
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77 #include <openssl/engine.h> |
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78 #include <openssl/dso.h> |
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79 #include <openssl/err.h> |
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80 #include <openssl/bn.h> |
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81 #include <openssl/md5.h> |
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82 #include <openssl/pem.h> |
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83 #ifndef OPENSSL_NO_RSA |
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84 #include <openssl/rsa.h> |
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85 #endif |
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86 #ifndef OPENSSL_NO_DSA |
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87 #include <openssl/dsa.h> |
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88 #endif |
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89 #ifndef OPENSSL_NO_DH |
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90 #include <openssl/dh.h> |
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91 #endif |
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92 #include <openssl/rand.h> |
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93 #include <openssl/objects.h> |
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94 #include <openssl/x509.h> |
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95 #include <openssl/aes.h> |
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96 #include <dlfcn.h> |
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97 #include <pthread.h> |
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98 |
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99 #ifndef OPENSSL_NO_HW |
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100 #ifndef OPENSSL_NO_HW_PK11 |
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101 |
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102 /* label for debug messages printed on stderr */ |
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103 #define PK11_DBG "PKCS#11 ENGINE DEBUG" |
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104 /* prints a lot of debug messages on stderr about slot selection process */ |
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105 #undef DEBUG_SLOT_SELECTION |
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106 /* |
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107 * Solaris specific code. See comment at check_hw_mechanisms() for more |
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108 * information. |
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109 */ |
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110 #if defined(__SVR4) && defined(__sun) |
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111 #define SOLARIS_HW_SLOT_SELECTION |
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112 #endif |
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113 |
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114 #ifdef SOLARIS_HW_SLOT_SELECTION |
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115 #include <sys/auxv.h> |
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116 #endif |
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117 |
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118 #ifdef DEBUG_SLOT_SELECTION |
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119 #define DEBUG_SLOT_SEL(...) fprintf(stderr, __VA_ARGS__) |
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120 #else |
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121 #define DEBUG_SLOT_SEL(...) |
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122 #endif |
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123 |
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124 #include <security/cryptoki.h> |
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125 #include <security/pkcs11.h> |
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126 #include "e_pk11.h" |
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127 #include "e_pk11_uri.h" |
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128 |
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129 static CK_BBOOL pk11_true = CK_TRUE; |
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130 static CK_BBOOL pk11_false = CK_FALSE; |
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131 #define PK11_ENGINE_LIB_NAME "PKCS#11 engine" |
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132 #include "e_pk11_err.c" |
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133 #include "e_pk11_uri.c" |
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134 #include "e_pk11_pub.c" |
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135 |
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136 /* |
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137 * We use this lock to prevent multiple C_Login()s, guard getpassphrase(), |
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138 * uri_struct manipulation, and static token info. All of that is used by the |
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139 * RSA keys by reference feature. |
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140 */ |
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141 pthread_mutex_t *uri_lock = NULL; |
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142 |
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143 #ifdef SOLARIS_HW_SLOT_SELECTION |
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144 /* |
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145 * Tables for symmetric ciphers and digest mechs found in the pkcs11_kernel |
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146 * library. See comment at check_hw_mechanisms() for more information. |
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147 */ |
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148 int *hw_cnids; |
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149 int *hw_dnids; |
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150 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
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151 |
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152 /* PKCS#11 session caches and their locks for all operation types */ |
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153 static PK11_CACHE session_cache[OP_MAX]; |
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154 |
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155 /* |
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156 * We cache the flags so that we do not have to run C_GetTokenInfo() again when |
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157 * logging into the token. |
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158 */ |
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159 CK_FLAGS pubkey_token_flags; |
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160 |
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161 /* |
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162 * As stated in v2.20, 11.7 Object Management Function, in section for |
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163 * C_FindObjectsInit(), at most one search operation may be active at a given |
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164 * time in a given session. Therefore, C_Find{,Init,Final}Objects() should be |
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165 * grouped together to form one atomic search operation. This is already |
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166 * ensured by the property of unique PKCS#11 session handle used for each |
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167 * PK11_SESSION object. |
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168 * |
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169 * This is however not the biggest concern - maintaining consistency of the |
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170 * underlying object store is more important. The same section of the spec also |
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171 * says that one thread can be in the middle of a search operation while another |
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172 * thread destroys the object matching the search template which would result in |
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173 * invalid handle returned from the search operation. |
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174 * |
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175 * Hence, the following locks are used for both protection of the object stores. |
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176 * They are also used for active list protection. |
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177 */ |
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178 pthread_mutex_t *find_lock[OP_MAX] = { NULL }; |
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179 |
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180 /* |
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181 * lists of asymmetric key handles which are active (referenced by at least one |
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182 * PK11_SESSION structure, either held by a thread or present in free_session |
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183 * list) for given algorithm type |
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184 */ |
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185 PK11_active *active_list[OP_MAX] = { NULL }; |
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186 |
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187 /* |
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188 * Create all secret key objects in a global session so that they are available |
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189 * to use for other sessions. These other sessions may be opened or closed |
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190 * without losing the secret key objects. |
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191 */ |
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192 static CK_SESSION_HANDLE global_session = CK_INVALID_HANDLE; |
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193 |
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194 /* Index for the supported ciphers */ |
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195 enum pk11_cipher_id { |
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196 PK11_DES_CBC, |
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197 PK11_DES3_CBC, |
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198 PK11_DES_ECB, |
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199 PK11_DES3_ECB, |
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200 PK11_RC4, |
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201 PK11_AES_128_CBC, |
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202 PK11_AES_192_CBC, |
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203 PK11_AES_256_CBC, |
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204 PK11_AES_128_ECB, |
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205 PK11_AES_192_ECB, |
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206 PK11_AES_256_ECB, |
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207 PK11_BLOWFISH_CBC, |
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208 PK11_AES_128_CTR, |
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209 PK11_AES_192_CTR, |
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210 PK11_AES_256_CTR, |
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211 PK11_CIPHER_MAX |
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212 }; |
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213 |
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214 /* Index for the supported digests */ |
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215 enum pk11_digest_id { |
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216 PK11_MD5, |
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217 PK11_SHA1, |
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218 PK11_SHA224, |
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219 PK11_SHA256, |
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220 PK11_SHA384, |
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221 PK11_SHA512, |
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222 PK11_DIGEST_MAX |
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223 }; |
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224 |
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225 typedef struct PK11_CIPHER_st |
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226 { |
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227 enum pk11_cipher_id id; |
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228 int nid; |
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229 int iv_len; |
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230 int min_key_len; |
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231 int max_key_len; |
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232 CK_KEY_TYPE key_type; |
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233 CK_MECHANISM_TYPE mech_type; |
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234 } PK11_CIPHER; |
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235 |
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236 typedef struct PK11_DIGEST_st |
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237 { |
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238 enum pk11_digest_id id; |
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239 int nid; |
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240 CK_MECHANISM_TYPE mech_type; |
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241 } PK11_DIGEST; |
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242 |
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243 /* ENGINE level stuff */ |
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244 static int pk11_init(ENGINE *e); |
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245 static int pk11_library_init(ENGINE *e); |
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246 static int pk11_finish(ENGINE *e); |
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247 static int pk11_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()); |
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248 static int pk11_destroy(ENGINE *e); |
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249 |
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250 /* RAND stuff */ |
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251 static void pk11_rand_seed(const void *buf, int num); |
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252 static void pk11_rand_add(const void *buf, int num, double add_entropy); |
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253 static void pk11_rand_cleanup(void); |
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254 static int pk11_rand_bytes(unsigned char *buf, int num); |
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255 static int pk11_rand_status(void); |
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256 |
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257 /* These functions are also used in other files */ |
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258 PK11_SESSION *pk11_get_session(PK11_OPTYPE optype); |
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259 void pk11_return_session(PK11_SESSION *sp, PK11_OPTYPE optype); |
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260 |
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261 /* active list manipulation functions used in this file */ |
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262 extern int pk11_active_delete(CK_OBJECT_HANDLE h, PK11_OPTYPE type); |
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263 extern void pk11_free_active_list(PK11_OPTYPE type); |
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264 |
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265 #ifndef OPENSSL_NO_RSA |
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266 int pk11_destroy_rsa_key_objects(PK11_SESSION *session); |
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267 int pk11_destroy_rsa_object_pub(PK11_SESSION *sp, CK_BBOOL uselock); |
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268 int pk11_destroy_rsa_object_priv(PK11_SESSION *sp, CK_BBOOL uselock); |
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269 #endif |
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270 #ifndef OPENSSL_NO_DSA |
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271 int pk11_destroy_dsa_key_objects(PK11_SESSION *session); |
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272 int pk11_destroy_dsa_object_pub(PK11_SESSION *sp, CK_BBOOL uselock); |
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273 int pk11_destroy_dsa_object_priv(PK11_SESSION *sp, CK_BBOOL uselock); |
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274 #endif |
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275 #ifndef OPENSSL_NO_DH |
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276 int pk11_destroy_dh_key_objects(PK11_SESSION *session); |
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277 int pk11_destroy_dh_object(PK11_SESSION *session, CK_BBOOL uselock); |
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278 #endif |
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279 |
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280 /* Local helper functions */ |
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281 static int pk11_free_all_sessions(void); |
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282 static int pk11_free_session_list(PK11_OPTYPE optype); |
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283 static int pk11_setup_session(PK11_SESSION *sp, PK11_OPTYPE optype); |
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284 static int pk11_destroy_cipher_key_objects(PK11_SESSION *session); |
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285 static int pk11_destroy_object(CK_SESSION_HANDLE handle, CK_OBJECT_HANDLE oh, |
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286 CK_BBOOL persistent); |
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287 static const char *get_PK11_LIBNAME(void); |
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288 static void free_PK11_LIBNAME(void); |
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289 static long set_PK11_LIBNAME(const char *name); |
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290 |
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291 /* Symmetric cipher and digest support functions */ |
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292 static int cipher_nid_to_pk11(int nid); |
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293 static int pk11_usable_ciphers(const int **nids); |
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294 static int pk11_usable_digests(const int **nids); |
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295 static int pk11_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
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296 const unsigned char *iv, int enc); |
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297 static int pk11_cipher_final(PK11_SESSION *sp); |
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298 static int pk11_cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
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299 const unsigned char *in, size_t inl); |
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300 static int pk11_cipher_cleanup(EVP_CIPHER_CTX *ctx); |
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301 static int pk11_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher, |
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302 const int **nids, int nid); |
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303 static int pk11_engine_digests(ENGINE *e, const EVP_MD **digest, |
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304 const int **nids, int nid); |
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305 static CK_OBJECT_HANDLE pk11_get_cipher_key(EVP_CIPHER_CTX *ctx, |
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306 const unsigned char *key, CK_KEY_TYPE key_type, PK11_SESSION *sp); |
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307 static int check_new_cipher_key(PK11_SESSION *sp, const unsigned char *key, |
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308 int key_len); |
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309 static int md_nid_to_pk11(int nid); |
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310 static int pk11_digest_init(EVP_MD_CTX *ctx); |
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311 static int pk11_digest_update(EVP_MD_CTX *ctx, const void *data, |
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312 size_t count); |
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313 static int pk11_digest_final(EVP_MD_CTX *ctx, unsigned char *md); |
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314 static int pk11_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from); |
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315 static int pk11_digest_cleanup(EVP_MD_CTX *ctx); |
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316 |
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317 static int pk11_choose_slots(int *any_slot_found); |
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318 static void pk11_find_symmetric_ciphers(CK_FUNCTION_LIST_PTR pflist, |
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319 CK_SLOT_ID current_slot, int *current_slot_n_cipher, |
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320 int *local_cipher_nids); |
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321 static void pk11_find_digests(CK_FUNCTION_LIST_PTR pflist, |
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322 CK_SLOT_ID current_slot, int *current_slot_n_digest, |
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323 int *local_digest_nids); |
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324 static void pk11_get_symmetric_cipher(CK_FUNCTION_LIST_PTR, int slot_id, |
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325 int *current_slot_n_cipher, int *local_cipher_nids, |
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326 PK11_CIPHER *cipher); |
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327 static void pk11_get_digest(CK_FUNCTION_LIST_PTR pflist, int slot_id, |
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328 int *current_slot_n_digest, int *local_digest_nids, |
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329 PK11_DIGEST *digest); |
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330 |
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331 static int pk11_init_all_locks(void); |
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332 static void pk11_free_all_locks(void); |
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333 |
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334 #ifdef SOLARIS_HW_SLOT_SELECTION |
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335 static int check_hw_mechanisms(void); |
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336 static int nid_in_table(int nid, int *nid_table); |
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337 static int hw_aes_instruction_set_present(void); |
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338 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
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339 |
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340 #define TRY_OBJ_DESTROY(sp, obj_hdl, retval, uselock, alg_type) \ |
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341 { \ |
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342 if (uselock) \ |
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343 LOCK_OBJSTORE(alg_type); \ |
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344 if (pk11_active_delete(obj_hdl, alg_type) == 1) \ |
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345 { \ |
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346 retval = pk11_destroy_object(sp->session, obj_hdl, \ |
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347 sp->persistent); \ |
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348 } \ |
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349 if (uselock) \ |
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350 UNLOCK_OBJSTORE(alg_type); \ |
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351 } |
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352 |
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353 static int cipher_nids[PK11_CIPHER_MAX]; |
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354 static int digest_nids[PK11_DIGEST_MAX]; |
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355 static int cipher_count = 0; |
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356 static int digest_count = 0; |
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357 static CK_BBOOL pk11_have_rsa = CK_FALSE; |
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358 static CK_BBOOL pk11_have_dsa = CK_FALSE; |
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359 static CK_BBOOL pk11_have_dh = CK_FALSE; |
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360 static CK_BBOOL pk11_have_random = CK_FALSE; |
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361 |
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362 /* |
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363 * Static list of ciphers. |
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364 * Note, that ciphers array is indexed by member PK11_CIPHER.id, |
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365 * thus ciphers[i].id == i |
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366 * Rows must be kept in sync with enum pk11_cipher_id. |
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367 */ |
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368 static PK11_CIPHER ciphers[] = |
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369 { |
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370 { PK11_DES_CBC, NID_des_cbc, 8, 8, 8, |
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371 CKK_DES, CKM_DES_CBC, }, |
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372 { PK11_DES3_CBC, NID_des_ede3_cbc, 8, 24, 24, |
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373 CKK_DES3, CKM_DES3_CBC, }, |
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374 { PK11_DES_ECB, NID_des_ecb, 0, 8, 8, |
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375 CKK_DES, CKM_DES_ECB, }, |
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376 { PK11_DES3_ECB, NID_des_ede3_ecb, 0, 24, 24, |
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377 CKK_DES3, CKM_DES3_ECB, }, |
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378 { PK11_RC4, NID_rc4, 0, 16, 256, |
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379 CKK_RC4, CKM_RC4, }, |
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380 { PK11_AES_128_CBC, NID_aes_128_cbc, 16, 16, 16, |
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381 CKK_AES, CKM_AES_CBC, }, |
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382 { PK11_AES_192_CBC, NID_aes_192_cbc, 16, 24, 24, |
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383 CKK_AES, CKM_AES_CBC, }, |
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384 { PK11_AES_256_CBC, NID_aes_256_cbc, 16, 32, 32, |
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385 CKK_AES, CKM_AES_CBC, }, |
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386 { PK11_AES_128_ECB, NID_aes_128_ecb, 0, 16, 16, |
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387 CKK_AES, CKM_AES_ECB, }, |
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388 { PK11_AES_192_ECB, NID_aes_192_ecb, 0, 24, 24, |
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389 CKK_AES, CKM_AES_ECB, }, |
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390 { PK11_AES_256_ECB, NID_aes_256_ecb, 0, 32, 32, |
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391 CKK_AES, CKM_AES_ECB, }, |
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392 { PK11_BLOWFISH_CBC, NID_bf_cbc, 8, 16, 16, |
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393 CKK_BLOWFISH, CKM_BLOWFISH_CBC, }, |
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394 { PK11_AES_128_CTR, NID_aes_128_ctr, 16, 16, 16, |
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395 CKK_AES, CKM_AES_CTR, }, |
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396 { PK11_AES_192_CTR, NID_aes_192_ctr, 16, 24, 24, |
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397 CKK_AES, CKM_AES_CTR, }, |
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398 { PK11_AES_256_CTR, NID_aes_256_ctr, 16, 32, 32, |
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399 CKK_AES, CKM_AES_CTR, }, |
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400 }; |
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401 |
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402 /* |
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403 * Static list of digests. |
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404 * Note, that digests array is indexed by member PK11_DIGEST.id, |
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405 * thus digests[i].id == i |
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406 * Rows must be kept in sync with enum pk11_digest_id. |
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407 */ |
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408 static PK11_DIGEST digests[] = |
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409 { |
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410 {PK11_MD5, NID_md5, CKM_MD5, }, |
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411 {PK11_SHA1, NID_sha1, CKM_SHA_1, }, |
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412 {PK11_SHA224, NID_sha224, CKM_SHA224, }, |
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413 {PK11_SHA256, NID_sha256, CKM_SHA256, }, |
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414 {PK11_SHA384, NID_sha384, CKM_SHA384, }, |
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415 {PK11_SHA512, NID_sha512, CKM_SHA512, }, |
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416 {0, NID_undef, 0xFFFF, }, |
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417 }; |
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418 |
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419 /* |
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420 * Structure to be used for the cipher_data/md_data in |
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421 * EVP_CIPHER_CTX/EVP_MD_CTX structures in order to use the same pk11 |
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422 * session in multiple cipher_update calls |
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423 */ |
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424 typedef struct PK11_CIPHER_STATE_st |
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425 { |
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426 PK11_SESSION *sp; |
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427 } PK11_CIPHER_STATE; |
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428 |
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429 |
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430 /* |
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431 * libcrypto EVP stuff - this is how we get wired to EVP so the engine gets |
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432 * called when libcrypto requests a cipher NID. |
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433 * |
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434 * Note how the PK11_CIPHER_STATE is used here. |
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435 */ |
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436 |
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437 /* DES CBC EVP */ |
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438 static const EVP_CIPHER pk11_des_cbc = |
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439 { |
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440 NID_des_cbc, |
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441 8, 8, 8, |
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442 EVP_CIPH_CBC_MODE, |
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443 pk11_cipher_init, |
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444 pk11_cipher_do_cipher, |
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445 pk11_cipher_cleanup, |
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446 sizeof (PK11_CIPHER_STATE), |
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447 EVP_CIPHER_set_asn1_iv, |
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448 EVP_CIPHER_get_asn1_iv, |
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449 NULL |
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450 }; |
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451 |
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452 /* 3DES CBC EVP */ |
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453 static const EVP_CIPHER pk11_3des_cbc = |
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454 { |
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455 NID_des_ede3_cbc, |
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456 8, 24, 8, |
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457 EVP_CIPH_CBC_MODE, |
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458 pk11_cipher_init, |
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459 pk11_cipher_do_cipher, |
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460 pk11_cipher_cleanup, |
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461 sizeof (PK11_CIPHER_STATE), |
|
462 EVP_CIPHER_set_asn1_iv, |
|
463 EVP_CIPHER_get_asn1_iv, |
|
464 NULL |
|
465 }; |
|
466 |
|
467 /* |
|
468 * ECB modes don't use an Initial Vector so that's why set_asn1_parameters and |
|
469 * get_asn1_parameters fields are set to NULL. |
|
470 */ |
|
471 static const EVP_CIPHER pk11_des_ecb = |
|
472 { |
|
473 NID_des_ecb, |
|
474 8, 8, 8, |
|
475 EVP_CIPH_ECB_MODE, |
|
476 pk11_cipher_init, |
|
477 pk11_cipher_do_cipher, |
|
478 pk11_cipher_cleanup, |
|
479 sizeof (PK11_CIPHER_STATE), |
|
480 NULL, |
|
481 NULL, |
|
482 NULL |
|
483 }; |
|
484 |
|
485 static const EVP_CIPHER pk11_3des_ecb = |
|
486 { |
|
487 NID_des_ede3_ecb, |
|
488 8, 24, 8, |
|
489 EVP_CIPH_ECB_MODE, |
|
490 pk11_cipher_init, |
|
491 pk11_cipher_do_cipher, |
|
492 pk11_cipher_cleanup, |
|
493 sizeof (PK11_CIPHER_STATE), |
|
494 NULL, |
|
495 NULL, |
|
496 NULL |
|
497 }; |
|
498 |
|
499 |
|
500 static const EVP_CIPHER pk11_aes_128_cbc = |
|
501 { |
|
502 NID_aes_128_cbc, |
|
503 16, 16, 16, |
|
504 EVP_CIPH_CBC_MODE, |
|
505 pk11_cipher_init, |
|
506 pk11_cipher_do_cipher, |
|
507 pk11_cipher_cleanup, |
|
508 sizeof (PK11_CIPHER_STATE), |
|
509 EVP_CIPHER_set_asn1_iv, |
|
510 EVP_CIPHER_get_asn1_iv, |
|
511 NULL |
|
512 }; |
|
513 |
|
514 static const EVP_CIPHER pk11_aes_192_cbc = |
|
515 { |
|
516 NID_aes_192_cbc, |
|
517 16, 24, 16, |
|
518 EVP_CIPH_CBC_MODE, |
|
519 pk11_cipher_init, |
|
520 pk11_cipher_do_cipher, |
|
521 pk11_cipher_cleanup, |
|
522 sizeof (PK11_CIPHER_STATE), |
|
523 EVP_CIPHER_set_asn1_iv, |
|
524 EVP_CIPHER_get_asn1_iv, |
|
525 NULL |
|
526 }; |
|
527 |
|
528 static const EVP_CIPHER pk11_aes_256_cbc = |
|
529 { |
|
530 NID_aes_256_cbc, |
|
531 16, 32, 16, |
|
532 EVP_CIPH_CBC_MODE, |
|
533 pk11_cipher_init, |
|
534 pk11_cipher_do_cipher, |
|
535 pk11_cipher_cleanup, |
|
536 sizeof (PK11_CIPHER_STATE), |
|
537 EVP_CIPHER_set_asn1_iv, |
|
538 EVP_CIPHER_get_asn1_iv, |
|
539 NULL |
|
540 }; |
|
541 |
|
542 /* |
|
543 * ECB modes don't use IV so that's why set_asn1_parameters and |
|
544 * get_asn1_parameters are set to NULL. |
|
545 */ |
|
546 static const EVP_CIPHER pk11_aes_128_ecb = |
|
547 { |
|
548 NID_aes_128_ecb, |
|
549 16, 16, 0, |
|
550 EVP_CIPH_ECB_MODE, |
|
551 pk11_cipher_init, |
|
552 pk11_cipher_do_cipher, |
|
553 pk11_cipher_cleanup, |
|
554 sizeof (PK11_CIPHER_STATE), |
|
555 NULL, |
|
556 NULL, |
|
557 NULL |
|
558 }; |
|
559 |
|
560 static const EVP_CIPHER pk11_aes_192_ecb = |
|
561 { |
|
562 NID_aes_192_ecb, |
|
563 16, 24, 0, |
|
564 EVP_CIPH_ECB_MODE, |
|
565 pk11_cipher_init, |
|
566 pk11_cipher_do_cipher, |
|
567 pk11_cipher_cleanup, |
|
568 sizeof (PK11_CIPHER_STATE), |
|
569 NULL, |
|
570 NULL, |
|
571 NULL |
|
572 }; |
|
573 |
|
574 static const EVP_CIPHER pk11_aes_256_ecb = |
|
575 { |
|
576 NID_aes_256_ecb, |
|
577 16, 32, 0, |
|
578 EVP_CIPH_ECB_MODE, |
|
579 pk11_cipher_init, |
|
580 pk11_cipher_do_cipher, |
|
581 pk11_cipher_cleanup, |
|
582 sizeof (PK11_CIPHER_STATE), |
|
583 NULL, |
|
584 NULL, |
|
585 NULL |
|
586 }; |
|
587 |
|
588 static EVP_CIPHER pk11_aes_128_ctr = |
|
589 { |
|
590 NID_aes_128_ctr, |
|
591 16, 16, 16, |
|
592 EVP_CIPH_CTR_MODE, |
|
593 pk11_cipher_init, |
|
594 pk11_cipher_do_cipher, |
|
595 pk11_cipher_cleanup, |
|
596 sizeof (PK11_CIPHER_STATE), |
|
597 EVP_CIPHER_set_asn1_iv, |
|
598 EVP_CIPHER_get_asn1_iv, |
|
599 NULL |
|
600 }; |
|
601 |
|
602 static EVP_CIPHER pk11_aes_192_ctr = |
|
603 { |
|
604 NID_aes_192_ctr, |
|
605 16, 24, 16, |
|
606 EVP_CIPH_CTR_MODE, |
|
607 pk11_cipher_init, |
|
608 pk11_cipher_do_cipher, |
|
609 pk11_cipher_cleanup, |
|
610 sizeof (PK11_CIPHER_STATE), |
|
611 EVP_CIPHER_set_asn1_iv, |
|
612 EVP_CIPHER_get_asn1_iv, |
|
613 NULL |
|
614 }; |
|
615 |
|
616 static EVP_CIPHER pk11_aes_256_ctr = |
|
617 { |
|
618 NID_aes_256_ctr, |
|
619 16, 32, 16, |
|
620 EVP_CIPH_CTR_MODE, |
|
621 pk11_cipher_init, |
|
622 pk11_cipher_do_cipher, |
|
623 pk11_cipher_cleanup, |
|
624 sizeof (PK11_CIPHER_STATE), |
|
625 EVP_CIPHER_set_asn1_iv, |
|
626 EVP_CIPHER_get_asn1_iv, |
|
627 NULL |
|
628 }; |
|
629 |
|
630 static const EVP_CIPHER pk11_bf_cbc = |
|
631 { |
|
632 NID_bf_cbc, |
|
633 8, 16, 8, |
|
634 EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CBC_MODE, |
|
635 pk11_cipher_init, |
|
636 pk11_cipher_do_cipher, |
|
637 pk11_cipher_cleanup, |
|
638 sizeof (PK11_CIPHER_STATE), |
|
639 EVP_CIPHER_set_asn1_iv, |
|
640 EVP_CIPHER_get_asn1_iv, |
|
641 NULL |
|
642 }; |
|
643 |
|
644 static const EVP_CIPHER pk11_rc4 = |
|
645 { |
|
646 NID_rc4, |
|
647 1, 16, 0, |
|
648 EVP_CIPH_VARIABLE_LENGTH, |
|
649 pk11_cipher_init, |
|
650 pk11_cipher_do_cipher, |
|
651 pk11_cipher_cleanup, |
|
652 sizeof (PK11_CIPHER_STATE), |
|
653 NULL, |
|
654 NULL, |
|
655 NULL |
|
656 }; |
|
657 |
|
658 static const EVP_MD pk11_md5 = |
|
659 { |
|
660 NID_md5, |
|
661 NID_md5WithRSAEncryption, |
|
662 MD5_DIGEST_LENGTH, |
|
663 0, |
|
664 pk11_digest_init, |
|
665 pk11_digest_update, |
|
666 pk11_digest_final, |
|
667 pk11_digest_copy, |
|
668 pk11_digest_cleanup, |
|
669 EVP_PKEY_RSA_method, |
|
670 MD5_CBLOCK, |
|
671 sizeof (PK11_CIPHER_STATE), |
|
672 }; |
|
673 |
|
674 static const EVP_MD pk11_sha1 = |
|
675 { |
|
676 NID_sha1, |
|
677 NID_sha1WithRSAEncryption, |
|
678 SHA_DIGEST_LENGTH, |
|
679 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT, |
|
680 pk11_digest_init, |
|
681 pk11_digest_update, |
|
682 pk11_digest_final, |
|
683 pk11_digest_copy, |
|
684 pk11_digest_cleanup, |
|
685 EVP_PKEY_RSA_method, |
|
686 SHA_CBLOCK, |
|
687 sizeof (PK11_CIPHER_STATE), |
|
688 }; |
|
689 |
|
690 static const EVP_MD pk11_sha224 = |
|
691 { |
|
692 NID_sha224, |
|
693 NID_sha224WithRSAEncryption, |
|
694 SHA224_DIGEST_LENGTH, |
|
695 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT, |
|
696 pk11_digest_init, |
|
697 pk11_digest_update, |
|
698 pk11_digest_final, |
|
699 pk11_digest_copy, |
|
700 pk11_digest_cleanup, |
|
701 EVP_PKEY_RSA_method, |
|
702 /* SHA-224 uses the same cblock size as SHA-256 */ |
|
703 SHA256_CBLOCK, |
|
704 sizeof (PK11_CIPHER_STATE), |
|
705 }; |
|
706 |
|
707 static const EVP_MD pk11_sha256 = |
|
708 { |
|
709 NID_sha256, |
|
710 NID_sha256WithRSAEncryption, |
|
711 SHA256_DIGEST_LENGTH, |
|
712 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT, |
|
713 pk11_digest_init, |
|
714 pk11_digest_update, |
|
715 pk11_digest_final, |
|
716 pk11_digest_copy, |
|
717 pk11_digest_cleanup, |
|
718 EVP_PKEY_RSA_method, |
|
719 SHA256_CBLOCK, |
|
720 sizeof (PK11_CIPHER_STATE), |
|
721 }; |
|
722 |
|
723 static const EVP_MD pk11_sha384 = |
|
724 { |
|
725 NID_sha384, |
|
726 NID_sha384WithRSAEncryption, |
|
727 SHA384_DIGEST_LENGTH, |
|
728 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT, |
|
729 pk11_digest_init, |
|
730 pk11_digest_update, |
|
731 pk11_digest_final, |
|
732 pk11_digest_copy, |
|
733 pk11_digest_cleanup, |
|
734 EVP_PKEY_RSA_method, |
|
735 /* SHA-384 uses the same cblock size as SHA-512 */ |
|
736 SHA512_CBLOCK, |
|
737 sizeof (PK11_CIPHER_STATE), |
|
738 }; |
|
739 |
|
740 static const EVP_MD pk11_sha512 = |
|
741 { |
|
742 NID_sha512, |
|
743 NID_sha512WithRSAEncryption, |
|
744 SHA512_DIGEST_LENGTH, |
|
745 EVP_MD_FLAG_PKEY_METHOD_SIGNATURE|EVP_MD_FLAG_DIGALGID_ABSENT, |
|
746 pk11_digest_init, |
|
747 pk11_digest_update, |
|
748 pk11_digest_final, |
|
749 pk11_digest_copy, |
|
750 pk11_digest_cleanup, |
|
751 EVP_PKEY_RSA_method, |
|
752 SHA512_CBLOCK, |
|
753 sizeof (PK11_CIPHER_STATE), |
|
754 }; |
|
755 |
|
756 /* |
|
757 * Initialization function. Sets up various PKCS#11 library components. |
|
758 * The definitions for control commands specific to this engine |
|
759 */ |
|
760 #define PK11_CMD_SO_PATH ENGINE_CMD_BASE |
|
761 static const ENGINE_CMD_DEFN pk11_cmd_defns[] = |
|
762 { |
|
763 { |
|
764 PK11_CMD_SO_PATH, |
|
765 "SO_PATH", |
|
766 "Specifies the path to the 'pkcs#11' shared library", |
|
767 ENGINE_CMD_FLAG_STRING |
|
768 }, |
|
769 {0, NULL, NULL, 0} |
|
770 }; |
|
771 |
|
772 |
|
773 static RAND_METHOD pk11_random = |
|
774 { |
|
775 pk11_rand_seed, |
|
776 pk11_rand_bytes, |
|
777 pk11_rand_cleanup, |
|
778 pk11_rand_add, |
|
779 pk11_rand_bytes, |
|
780 pk11_rand_status |
|
781 }; |
|
782 |
|
783 |
|
784 /* Constants used when creating the ENGINE */ |
|
785 static const char *engine_pk11_id = "pkcs11"; |
|
786 static const char *engine_pk11_name = "PKCS #11 engine support"; |
|
787 |
|
788 CK_FUNCTION_LIST_PTR pFuncList = NULL; |
|
789 static const char PK11_GET_FUNCTION_LIST[] = "C_GetFunctionList"; |
|
790 |
|
791 /* |
|
792 * This is a static string constant for the DSO file name and the function |
|
793 * symbol names to bind to. We set it in the Configure script based on whether |
|
794 * this is 32 or 64 bit build. |
|
795 */ |
|
796 static const char def_PK11_LIBNAME[] = PK11_LIB_LOCATION; |
|
797 |
|
798 /* Needed in e_pk11_pub.c as well so that's why it is not static. */ |
|
799 CK_SLOT_ID pubkey_SLOTID = 0; |
|
800 static CK_SLOT_ID rand_SLOTID = 0; |
|
801 static CK_SLOT_ID SLOTID = 0; |
|
802 static CK_BBOOL pk11_library_initialized = CK_FALSE; |
|
803 static CK_BBOOL pk11_atfork_initialized = CK_FALSE; |
|
804 static int pk11_pid = 0; |
|
805 static ENGINE* pk11_engine = NULL; |
|
806 |
|
807 static DSO *pk11_dso = NULL; |
|
808 |
|
809 /* allocate and initialize all locks used by the engine itself */ |
|
810 static int pk11_init_all_locks(void) |
|
811 { |
|
812 int type; |
|
813 |
|
814 #ifndef OPENSSL_NO_RSA |
|
815 find_lock[OP_RSA] = OPENSSL_malloc(sizeof (pthread_mutex_t)); |
|
816 if (find_lock[OP_RSA] == NULL) |
|
817 goto malloc_err; |
|
818 (void) pthread_mutex_init(find_lock[OP_RSA], NULL); |
|
819 #endif /* OPENSSL_NO_RSA */ |
|
820 |
|
821 if ((uri_lock = OPENSSL_malloc(sizeof (pthread_mutex_t))) == NULL) |
|
822 goto malloc_err; |
|
823 (void) pthread_mutex_init(uri_lock, NULL); |
|
824 |
|
825 #ifndef OPENSSL_NO_DSA |
|
826 find_lock[OP_DSA] = OPENSSL_malloc(sizeof (pthread_mutex_t)); |
|
827 if (find_lock[OP_DSA] == NULL) |
|
828 goto malloc_err; |
|
829 (void) pthread_mutex_init(find_lock[OP_DSA], NULL); |
|
830 #endif /* OPENSSL_NO_DSA */ |
|
831 |
|
832 #ifndef OPENSSL_NO_DH |
|
833 find_lock[OP_DH] = OPENSSL_malloc(sizeof (pthread_mutex_t)); |
|
834 if (find_lock[OP_DH] == NULL) |
|
835 goto malloc_err; |
|
836 (void) pthread_mutex_init(find_lock[OP_DH], NULL); |
|
837 #endif /* OPENSSL_NO_DH */ |
|
838 |
|
839 for (type = 0; type < OP_MAX; type++) |
|
840 { |
|
841 session_cache[type].lock = |
|
842 OPENSSL_malloc(sizeof (pthread_mutex_t)); |
|
843 if (session_cache[type].lock == NULL) |
|
844 goto malloc_err; |
|
845 (void) pthread_mutex_init(session_cache[type].lock, NULL); |
|
846 } |
|
847 |
|
848 return (1); |
|
849 |
|
850 malloc_err: |
|
851 pk11_free_all_locks(); |
|
852 PK11err(PK11_F_INIT_ALL_LOCKS, PK11_R_MALLOC_FAILURE); |
|
853 return (0); |
|
854 } |
|
855 |
|
856 static void pk11_free_all_locks(void) |
|
857 { |
|
858 int type; |
|
859 |
|
860 #ifndef OPENSSL_NO_RSA |
|
861 if (find_lock[OP_RSA] != NULL) |
|
862 { |
|
863 (void) pthread_mutex_destroy(find_lock[OP_RSA]); |
|
864 OPENSSL_free(find_lock[OP_RSA]); |
|
865 find_lock[OP_RSA] = NULL; |
|
866 } |
|
867 #endif /* OPENSSL_NO_RSA */ |
|
868 #ifndef OPENSSL_NO_DSA |
|
869 if (find_lock[OP_DSA] != NULL) |
|
870 { |
|
871 (void) pthread_mutex_destroy(find_lock[OP_DSA]); |
|
872 OPENSSL_free(find_lock[OP_DSA]); |
|
873 find_lock[OP_DSA] = NULL; |
|
874 } |
|
875 #endif /* OPENSSL_NO_DSA */ |
|
876 #ifndef OPENSSL_NO_DH |
|
877 if (find_lock[OP_DH] != NULL) |
|
878 { |
|
879 (void) pthread_mutex_destroy(find_lock[OP_DH]); |
|
880 OPENSSL_free(find_lock[OP_DH]); |
|
881 find_lock[OP_DH] = NULL; |
|
882 } |
|
883 #endif /* OPENSSL_NO_DH */ |
|
884 |
|
885 for (type = 0; type < OP_MAX; type++) |
|
886 { |
|
887 if (session_cache[type].lock != NULL) |
|
888 { |
|
889 (void) pthread_mutex_destroy(session_cache[type].lock); |
|
890 OPENSSL_free(session_cache[type].lock); |
|
891 session_cache[type].lock = NULL; |
|
892 } |
|
893 } |
|
894 /* Free uri_lock */ |
|
895 (void) pthread_mutex_destroy(uri_lock); |
|
896 OPENSSL_free(uri_lock); |
|
897 uri_lock = NULL; |
|
898 } |
|
899 |
|
900 /* |
|
901 * This internal function is used by ENGINE_pk11() and "dynamic" ENGINE support. |
|
902 */ |
|
903 static int bind_pk11(ENGINE *e) |
|
904 { |
|
905 #ifndef OPENSSL_NO_RSA |
|
906 const RSA_METHOD *rsa = NULL; |
|
907 RSA_METHOD *pk11_rsa = PK11_RSA(); |
|
908 #endif /* OPENSSL_NO_RSA */ |
|
909 if (!pk11_library_initialized) |
|
910 if (!pk11_library_init(e)) |
|
911 return (0); |
|
912 |
|
913 if (!ENGINE_set_id(e, engine_pk11_id) || |
|
914 !ENGINE_set_name(e, engine_pk11_name) || |
|
915 !ENGINE_set_ciphers(e, pk11_engine_ciphers) || |
|
916 !ENGINE_set_digests(e, pk11_engine_digests)) |
|
917 return (0); |
|
918 |
|
919 if (!ENGINE_set_pkey_meths(e, pk11_engine_pkey_methods)) |
|
920 return (0); |
|
921 |
|
922 #ifndef OPENSSL_NO_RSA |
|
923 if (pk11_have_rsa == CK_TRUE) |
|
924 { |
|
925 if (!ENGINE_set_RSA(e, PK11_RSA()) || |
|
926 !ENGINE_set_load_privkey_function(e, pk11_load_privkey) || |
|
927 !ENGINE_set_load_pubkey_function(e, pk11_load_pubkey)) |
|
928 return (0); |
|
929 DEBUG_SLOT_SEL("%s: registered RSA\n", PK11_DBG); |
|
930 } |
|
931 #endif /* OPENSSL_NO_RSA */ |
|
932 #ifndef OPENSSL_NO_DSA |
|
933 if (pk11_have_dsa == CK_TRUE) |
|
934 { |
|
935 if (!ENGINE_set_DSA(e, PK11_DSA())) |
|
936 return (0); |
|
937 DEBUG_SLOT_SEL("%s: registered DSA\n", PK11_DBG); |
|
938 } |
|
939 #endif /* OPENSSL_NO_DSA */ |
|
940 #ifndef OPENSSL_NO_DH |
|
941 if (pk11_have_dh == CK_TRUE) |
|
942 { |
|
943 if (!ENGINE_set_DH(e, PK11_DH())) |
|
944 return (0); |
|
945 DEBUG_SLOT_SEL("%s: registered DH\n", PK11_DBG); |
|
946 } |
|
947 #endif /* OPENSSL_NO_DH */ |
|
948 if (pk11_have_random) |
|
949 { |
|
950 if (!ENGINE_set_RAND(e, &pk11_random)) |
|
951 return (0); |
|
952 DEBUG_SLOT_SEL("%s: registered random\n", PK11_DBG); |
|
953 } |
|
954 if (!ENGINE_set_init_function(e, pk11_init) || |
|
955 !ENGINE_set_destroy_function(e, pk11_destroy) || |
|
956 !ENGINE_set_finish_function(e, pk11_finish) || |
|
957 !ENGINE_set_ctrl_function(e, pk11_ctrl) || |
|
958 !ENGINE_set_cmd_defns(e, pk11_cmd_defns)) |
|
959 return (0); |
|
960 |
|
961 /* |
|
962 * Apache calls OpenSSL function RSA_blinding_on() once during startup |
|
963 * which in turn calls bn_mod_exp. Since we do not implement bn_mod_exp |
|
964 * here, we wire it back to the OpenSSL software implementation. |
|
965 * Since it is used only once, performance is not a concern. |
|
966 */ |
|
967 #ifndef OPENSSL_NO_RSA |
|
968 rsa = RSA_PKCS1_SSLeay(); |
|
969 pk11_rsa->rsa_mod_exp = rsa->rsa_mod_exp; |
|
970 pk11_rsa->bn_mod_exp = rsa->bn_mod_exp; |
|
971 #endif /* OPENSSL_NO_RSA */ |
|
972 |
|
973 /* Ensure the pk11 error handling is set up */ |
|
974 ERR_load_pk11_strings(); |
|
975 |
|
976 return (1); |
|
977 } |
|
978 |
|
979 static int bind_helper(ENGINE *e, const char *id) |
|
980 { |
|
981 if (id && (strcmp(id, engine_pk11_id) != 0)) |
|
982 return (0); |
|
983 |
|
984 if (!bind_pk11(e)) |
|
985 return (0); |
|
986 |
|
987 return (1); |
|
988 } |
|
989 |
|
990 IMPLEMENT_DYNAMIC_CHECK_FN() |
|
991 IMPLEMENT_DYNAMIC_BIND_FN(bind_helper) |
|
992 |
|
993 /* |
|
994 * These are the static string constants for the DSO file name and |
|
995 * the function symbol names to bind to. |
|
996 */ |
|
997 static const char *PK11_LIBNAME = NULL; |
|
998 |
|
999 static const char *get_PK11_LIBNAME(void) |
|
1000 { |
|
1001 if (PK11_LIBNAME) |
|
1002 return (PK11_LIBNAME); |
|
1003 |
|
1004 return (def_PK11_LIBNAME); |
|
1005 } |
|
1006 |
|
1007 static void free_PK11_LIBNAME(void) |
|
1008 { |
|
1009 if (PK11_LIBNAME) |
|
1010 OPENSSL_free((void*)PK11_LIBNAME); |
|
1011 |
|
1012 PK11_LIBNAME = NULL; |
|
1013 } |
|
1014 |
|
1015 static long set_PK11_LIBNAME(const char *name) |
|
1016 { |
|
1017 free_PK11_LIBNAME(); |
|
1018 |
|
1019 return ((PK11_LIBNAME = BUF_strdup(name)) != NULL ? 1 : 0); |
|
1020 } |
|
1021 |
|
1022 /* acquire all engine specific mutexes before fork */ |
|
1023 static void pk11_fork_prepare(void) |
|
1024 { |
|
1025 int i; |
|
1026 |
|
1027 if (!pk11_library_initialized) |
|
1028 return; |
|
1029 |
|
1030 LOCK_OBJSTORE(OP_RSA); |
|
1031 LOCK_OBJSTORE(OP_DSA); |
|
1032 LOCK_OBJSTORE(OP_DH); |
|
1033 (void) pthread_mutex_lock(uri_lock); |
|
1034 for (i = 0; i < OP_MAX; i++) |
|
1035 { |
|
1036 (void) pthread_mutex_lock(session_cache[i].lock); |
|
1037 } |
|
1038 } |
|
1039 |
|
1040 /* release all engine specific mutexes */ |
|
1041 static void pk11_fork_parent(void) |
|
1042 { |
|
1043 int i; |
|
1044 |
|
1045 if (!pk11_library_initialized) |
|
1046 return; |
|
1047 |
|
1048 for (i = OP_MAX - 1; i >= 0; i--) |
|
1049 { |
|
1050 (void) pthread_mutex_unlock(session_cache[i].lock); |
|
1051 } |
|
1052 UNLOCK_OBJSTORE(OP_DH); |
|
1053 UNLOCK_OBJSTORE(OP_DSA); |
|
1054 UNLOCK_OBJSTORE(OP_RSA); |
|
1055 (void) pthread_mutex_unlock(uri_lock); |
|
1056 } |
|
1057 |
|
1058 /* |
|
1059 * same situation as in parent - we need to unlock all locks to make them |
|
1060 * accessible to all threads. |
|
1061 */ |
|
1062 static void pk11_fork_child(void) |
|
1063 { |
|
1064 int i; |
|
1065 |
|
1066 if (!pk11_library_initialized) |
|
1067 return; |
|
1068 |
|
1069 /* invalidate the global session */ |
|
1070 global_session = CK_INVALID_HANDLE; |
|
1071 |
|
1072 for (i = OP_MAX - 1; i >= 0; i--) |
|
1073 { |
|
1074 (void) pthread_mutex_unlock(session_cache[i].lock); |
|
1075 } |
|
1076 UNLOCK_OBJSTORE(OP_DH); |
|
1077 UNLOCK_OBJSTORE(OP_DSA); |
|
1078 UNLOCK_OBJSTORE(OP_RSA); |
|
1079 (void) pthread_mutex_unlock(uri_lock); |
|
1080 } |
|
1081 |
|
1082 /* Initialization function for the pk11 engine */ |
|
1083 static int pk11_init(ENGINE *e) |
|
1084 { |
|
1085 return (pk11_library_init(e)); |
|
1086 } |
|
1087 |
|
1088 /* |
|
1089 * Helper function that unsets reference to current engine (pk11_engine = NULL). |
|
1090 * |
|
1091 * Use of local variable only seems clumsy, it needs to be this way! |
|
1092 * This is to prevent double free in the unlucky scenario: |
|
1093 * ENGINE_free calls pk11_destroy calls pk11_finish calls ENGINE_free |
|
1094 * Setting pk11_engine to NULL prior to ENGINE_free() avoids this. |
|
1095 */ |
|
1096 static void pk11_engine_free() |
|
1097 { |
|
1098 ENGINE* old_engine = pk11_engine; |
|
1099 |
|
1100 if (old_engine) { |
|
1101 pk11_engine = NULL; |
|
1102 } |
|
1103 } |
|
1104 |
|
1105 /* |
|
1106 * Initialization function. Sets up various PKCS#11 library components. |
|
1107 * It selects a slot based on predefined critiera. In the process, it also |
|
1108 * count how many ciphers and digests to support. Since the cipher and |
|
1109 * digest information is needed when setting default engine, this function |
|
1110 * needs to be called before calling ENGINE_set_default. |
|
1111 */ |
|
1112 /* ARGSUSED */ |
|
1113 static int pk11_library_init(ENGINE *e) |
|
1114 { |
|
1115 CK_C_GetFunctionList p; |
|
1116 CK_RV rv = CKR_OK; |
|
1117 CK_INFO info; |
|
1118 CK_ULONG ul_state_len; |
|
1119 int any_slot_found; |
|
1120 int i; |
|
1121 |
|
1122 if (e != pk11_engine) |
|
1123 { |
|
1124 pk11_engine_free(); |
|
1125 pk11_engine = e; |
|
1126 } |
|
1127 |
|
1128 /* |
|
1129 * pk11_library_initialized is set to 0 in pk11_finish() which is called |
|
1130 * from ENGINE_finish(). However, if there is still at least one |
|
1131 * existing functional reference to the engine (see engine(3) for more |
|
1132 * information), pk11_finish() is skipped. For example, this can happen |
|
1133 * if an application forgets to clear one cipher context. In case of a |
|
1134 * fork() when the application is finishing the engine so that it can be |
|
1135 * reinitialized in the child, forgotten functional reference causes |
|
1136 * pk11_library_initialized to stay 1. In that case we need the PID |
|
1137 * check so that we properly initialize the engine again. |
|
1138 */ |
|
1139 if (pk11_library_initialized) |
|
1140 { |
|
1141 if (pk11_pid == getpid()) |
|
1142 { |
|
1143 return (1); |
|
1144 } |
|
1145 else |
|
1146 { |
|
1147 global_session = CK_INVALID_HANDLE; |
|
1148 /* |
|
1149 * free the locks first to prevent memory leak in case |
|
1150 * the application calls fork() without finishing the |
|
1151 * engine first. |
|
1152 */ |
|
1153 pk11_free_all_locks(); |
|
1154 } |
|
1155 } |
|
1156 |
|
1157 /* |
|
1158 * If initialization of the locks fails pk11_init_all_locks() |
|
1159 * will do the cleanup. |
|
1160 */ |
|
1161 if (!pk11_init_all_locks()) |
|
1162 goto err; |
|
1163 for (i = 0; i < OP_MAX; i++) |
|
1164 session_cache[i].head = NULL; |
|
1165 /* |
|
1166 * Initialize active lists. We only use active lists |
|
1167 * for asymmetric ciphers. |
|
1168 */ |
|
1169 for (i = 0; i < OP_MAX; i++) |
|
1170 active_list[i] = NULL; |
|
1171 |
|
1172 /* Attempt to load PKCS#11 library. */ |
|
1173 if (!pk11_dso) |
|
1174 { |
|
1175 pk11_dso = DSO_load(NULL, get_PK11_LIBNAME(), NULL, 0); |
|
1176 if (pk11_dso == NULL) |
|
1177 { |
|
1178 PK11err(PK11_F_LOAD, PK11_R_DSO_FAILURE); |
|
1179 goto err; |
|
1180 } |
|
1181 } |
|
1182 |
|
1183 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
1184 if (check_hw_mechanisms() == 0) |
|
1185 goto err; |
|
1186 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
1187 |
|
1188 /* get the C_GetFunctionList function from the loaded library */ |
|
1189 p = (CK_C_GetFunctionList)DSO_bind_func(pk11_dso, |
|
1190 PK11_GET_FUNCTION_LIST); |
|
1191 if (!p) |
|
1192 { |
|
1193 PK11err(PK11_F_LIBRARY_INIT, PK11_R_DSO_FAILURE); |
|
1194 goto err; |
|
1195 } |
|
1196 |
|
1197 /* get the full function list from the loaded library */ |
|
1198 rv = p(&pFuncList); |
|
1199 if (rv != CKR_OK) |
|
1200 { |
|
1201 PK11err_add_data(PK11_F_LIBRARY_INIT, PK11_R_DSO_FAILURE, rv); |
|
1202 goto err; |
|
1203 } |
|
1204 |
|
1205 rv = pFuncList->C_Initialize(NULL_PTR); |
|
1206 if ((rv != CKR_OK) && (rv != CKR_CRYPTOKI_ALREADY_INITIALIZED)) |
|
1207 { |
|
1208 PK11err_add_data(PK11_F_LIBRARY_INIT, PK11_R_INITIALIZE, rv); |
|
1209 goto err; |
|
1210 } |
|
1211 |
|
1212 rv = pFuncList->C_GetInfo(&info); |
|
1213 if (rv != CKR_OK) |
|
1214 { |
|
1215 PK11err_add_data(PK11_F_LIBRARY_INIT, PK11_R_GETINFO, rv); |
|
1216 goto err; |
|
1217 } |
|
1218 |
|
1219 if (pk11_choose_slots(&any_slot_found) == 0) |
|
1220 goto err; |
|
1221 |
|
1222 /* |
|
1223 * The library we use, set in def_PK11_LIBNAME, may not offer any |
|
1224 * slot(s). In that case, we must not proceed but we must not return an |
|
1225 * error. The reason is that applications that try to set up the PKCS#11 |
|
1226 * engine don't exit on error during the engine initialization just |
|
1227 * because no slot was present. |
|
1228 */ |
|
1229 if (any_slot_found == 0) |
|
1230 return (1); |
|
1231 |
|
1232 if (global_session == CK_INVALID_HANDLE) |
|
1233 { |
|
1234 /* Open the global_session for the new process */ |
|
1235 rv = pFuncList->C_OpenSession(SLOTID, CKF_SERIAL_SESSION, |
|
1236 NULL_PTR, NULL_PTR, &global_session); |
|
1237 if (rv != CKR_OK) |
|
1238 { |
|
1239 PK11err_add_data(PK11_F_LIBRARY_INIT, |
|
1240 PK11_R_OPENSESSION, rv); |
|
1241 goto err; |
|
1242 } |
|
1243 } |
|
1244 |
|
1245 /* |
|
1246 * Disable digest if C_GetOperationState is not supported since |
|
1247 * this function is required by OpenSSL digest copy function |
|
1248 */ |
|
1249 if (pFuncList->C_GetOperationState(global_session, NULL, &ul_state_len) |
|
1250 == CKR_FUNCTION_NOT_SUPPORTED) { |
|
1251 DEBUG_SLOT_SEL("%s: C_GetOperationState() not supported, " |
|
1252 "setting digest_count to 0\n", PK11_DBG); |
|
1253 digest_count = 0; |
|
1254 } |
|
1255 |
|
1256 pk11_library_initialized = CK_TRUE; |
|
1257 pk11_pid = getpid(); |
|
1258 |
|
1259 if (!pk11_atfork_initialized) |
|
1260 { |
|
1261 if (pthread_atfork(pk11_fork_prepare, pk11_fork_parent, |
|
1262 pk11_fork_child) != 0) |
|
1263 { |
|
1264 PK11err(PK11_F_LIBRARY_INIT, PK11_R_ATFORK_FAILED); |
|
1265 goto err; |
|
1266 } |
|
1267 pk11_atfork_initialized = CK_TRUE; |
|
1268 } |
|
1269 |
|
1270 return (1); |
|
1271 |
|
1272 err: |
|
1273 return (0); |
|
1274 } |
|
1275 |
|
1276 /* Destructor (complements the "ENGINE_pk11()" constructor) */ |
|
1277 /* ARGSUSED */ |
|
1278 static int pk11_destroy(ENGINE *e) |
|
1279 { |
|
1280 int rtn = 1; |
|
1281 |
|
1282 free_PK11_LIBNAME(); |
|
1283 ERR_unload_pk11_strings(); |
|
1284 if (pk11_library_initialized == CK_TRUE) |
|
1285 rtn = pk11_finish(e); |
|
1286 |
|
1287 return (rtn); |
|
1288 } |
|
1289 |
|
1290 /* |
|
1291 * Termination function to clean up the session, the token, and the pk11 |
|
1292 * library. |
|
1293 */ |
|
1294 /* ARGSUSED */ |
|
1295 static int pk11_finish(ENGINE *e) |
|
1296 { |
|
1297 int i; |
|
1298 |
|
1299 /* |
|
1300 * Make sure, right engine instance is being destroyed. |
|
1301 * Engine e may be the wrong instance if |
|
1302 * 1) either someone calls ENGINE_load_pk11 twice |
|
1303 * 2) or last ref. to an already finished engine is being destroyed |
|
1304 */ |
|
1305 if (e != pk11_engine) |
|
1306 goto err; |
|
1307 |
|
1308 if (pk11_dso == NULL) |
|
1309 { |
|
1310 PK11err(PK11_F_FINISH, PK11_R_NOT_LOADED); |
|
1311 goto err; |
|
1312 } |
|
1313 |
|
1314 OPENSSL_assert(pFuncList != NULL); |
|
1315 |
|
1316 if (pk11_free_all_sessions() == 0) |
|
1317 goto err; |
|
1318 |
|
1319 /* free all active lists */ |
|
1320 for (i = 0; i < OP_MAX; i++) |
|
1321 pk11_free_active_list(i); |
|
1322 |
|
1323 /* Global session is not present when there are no slots. */ |
|
1324 if (global_session != CK_INVALID_HANDLE) |
|
1325 { |
|
1326 pFuncList->C_CloseSession(global_session); |
|
1327 global_session = CK_INVALID_HANDLE; |
|
1328 } |
|
1329 |
|
1330 /* |
|
1331 * Since we are part of a library (libcrypto.so), calling this function |
|
1332 * may have side-effects. |
|
1333 */ |
|
1334 #if 0 |
|
1335 pFuncList->C_Finalize(NULL); |
|
1336 #endif |
|
1337 if (!DSO_free(pk11_dso)) |
|
1338 { |
|
1339 PK11err(PK11_F_FINISH, PK11_R_DSO_FAILURE); |
|
1340 goto err; |
|
1341 } |
|
1342 pk11_dso = NULL; |
|
1343 pFuncList = NULL; |
|
1344 pk11_library_initialized = CK_FALSE; |
|
1345 pk11_pid = 0; |
|
1346 pk11_engine_free(); |
|
1347 /* |
|
1348 * There is no way how to unregister atfork handlers (other than |
|
1349 * unloading the library) so we just free the locks. For this reason |
|
1350 * the atfork handlers check if the engine is initialized and bail out |
|
1351 * immediately if not. This is necessary in case a process finishes |
|
1352 * the engine before calling fork(). |
|
1353 */ |
|
1354 pk11_free_all_locks(); |
|
1355 |
|
1356 return (1); |
|
1357 |
|
1358 err: |
|
1359 return (0); |
|
1360 } |
|
1361 |
|
1362 /* Standard engine interface function to set the dynamic library path */ |
|
1363 /* ARGSUSED */ |
|
1364 static int pk11_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)()) |
|
1365 { |
|
1366 int initialized = ((pk11_dso == NULL) ? 0 : 1); |
|
1367 |
|
1368 switch (cmd) |
|
1369 { |
|
1370 case PK11_CMD_SO_PATH: |
|
1371 if (p == NULL) |
|
1372 { |
|
1373 PK11err(PK11_F_CTRL, ERR_R_PASSED_NULL_PARAMETER); |
|
1374 return (0); |
|
1375 } |
|
1376 |
|
1377 if (initialized) |
|
1378 { |
|
1379 PK11err(PK11_F_CTRL, PK11_R_ALREADY_LOADED); |
|
1380 return (0); |
|
1381 } |
|
1382 |
|
1383 return (set_PK11_LIBNAME((const char *)p)); |
|
1384 default: |
|
1385 break; |
|
1386 } |
|
1387 |
|
1388 PK11err(PK11_F_CTRL, PK11_R_CTRL_COMMAND_NOT_IMPLEMENTED); |
|
1389 |
|
1390 return (0); |
|
1391 } |
|
1392 |
|
1393 |
|
1394 /* Required function by the engine random interface. It does nothing here */ |
|
1395 static void pk11_rand_cleanup(void) |
|
1396 { |
|
1397 return; |
|
1398 } |
|
1399 |
|
1400 /* ARGSUSED */ |
|
1401 static void pk11_rand_add(const void *buf, int num, double add) |
|
1402 { |
|
1403 PK11_SESSION *sp; |
|
1404 |
|
1405 if ((sp = pk11_get_session(OP_RAND)) == NULL) |
|
1406 return; |
|
1407 |
|
1408 /* |
|
1409 * Ignore any errors (e.g. CKR_RANDOM_SEED_NOT_SUPPORTED) since |
|
1410 * the calling functions do not care anyway |
|
1411 */ |
|
1412 pFuncList->C_SeedRandom(sp->session, (unsigned char *) buf, num); |
|
1413 pk11_return_session(sp, OP_RAND); |
|
1414 |
|
1415 return; |
|
1416 } |
|
1417 |
|
1418 static void pk11_rand_seed(const void *buf, int num) |
|
1419 { |
|
1420 pk11_rand_add(buf, num, 0); |
|
1421 } |
|
1422 |
|
1423 static int pk11_rand_bytes(unsigned char *buf, int num) |
|
1424 { |
|
1425 CK_RV rv; |
|
1426 PK11_SESSION *sp; |
|
1427 |
|
1428 if ((sp = pk11_get_session(OP_RAND)) == NULL) |
|
1429 return (0); |
|
1430 |
|
1431 rv = pFuncList->C_GenerateRandom(sp->session, buf, num); |
|
1432 if (rv != CKR_OK) |
|
1433 { |
|
1434 PK11err_add_data(PK11_F_RAND_BYTES, PK11_R_GENERATERANDOM, rv); |
|
1435 pk11_return_session(sp, OP_RAND); |
|
1436 return (0); |
|
1437 } |
|
1438 |
|
1439 pk11_return_session(sp, OP_RAND); |
|
1440 return (1); |
|
1441 } |
|
1442 |
|
1443 /* Required function by the engine random interface. It does nothing here */ |
|
1444 static int pk11_rand_status(void) |
|
1445 { |
|
1446 return (1); |
|
1447 } |
|
1448 |
|
1449 /* Free all BIGNUM structures from PK11_SESSION. */ |
|
1450 static void pk11_free_nums(PK11_SESSION *sp, PK11_OPTYPE optype) |
|
1451 { |
|
1452 switch (optype) |
|
1453 { |
|
1454 #ifndef OPENSSL_NO_RSA |
|
1455 case OP_RSA: |
|
1456 if (sp->opdata_rsa_n_num != NULL) |
|
1457 { |
|
1458 BN_free(sp->opdata_rsa_n_num); |
|
1459 sp->opdata_rsa_n_num = NULL; |
|
1460 } |
|
1461 if (sp->opdata_rsa_e_num != NULL) |
|
1462 { |
|
1463 BN_free(sp->opdata_rsa_e_num); |
|
1464 sp->opdata_rsa_e_num = NULL; |
|
1465 } |
|
1466 if (sp->opdata_rsa_d_num != NULL) |
|
1467 { |
|
1468 BN_free(sp->opdata_rsa_d_num); |
|
1469 sp->opdata_rsa_d_num = NULL; |
|
1470 } |
|
1471 break; |
|
1472 #endif |
|
1473 #ifndef OPENSSL_NO_DSA |
|
1474 case OP_DSA: |
|
1475 if (sp->opdata_dsa_pub_num != NULL) |
|
1476 { |
|
1477 BN_free(sp->opdata_dsa_pub_num); |
|
1478 sp->opdata_dsa_pub_num = NULL; |
|
1479 } |
|
1480 if (sp->opdata_dsa_priv_num != NULL) |
|
1481 { |
|
1482 BN_free(sp->opdata_dsa_priv_num); |
|
1483 sp->opdata_dsa_priv_num = NULL; |
|
1484 } |
|
1485 break; |
|
1486 #endif |
|
1487 #ifndef OPENSSL_NO_DH |
|
1488 case OP_DH: |
|
1489 if (sp->opdata_dh_priv_num != NULL) |
|
1490 { |
|
1491 BN_free(sp->opdata_dh_priv_num); |
|
1492 sp->opdata_dh_priv_num = NULL; |
|
1493 } |
|
1494 break; |
|
1495 #endif |
|
1496 default: |
|
1497 break; |
|
1498 } |
|
1499 } |
|
1500 |
|
1501 /* |
|
1502 * Get new PK11_SESSION structure ready for use. Every process must have |
|
1503 * its own freelist of PK11_SESSION structures so handle fork() here |
|
1504 * by destroying the old and creating new freelist. |
|
1505 * The returned PK11_SESSION structure is disconnected from the freelist. |
|
1506 */ |
|
1507 PK11_SESSION * |
|
1508 pk11_get_session(PK11_OPTYPE optype) |
|
1509 { |
|
1510 PK11_SESSION *sp = NULL, *sp1, *freelist; |
|
1511 pthread_mutex_t *freelist_lock; |
|
1512 static pid_t pid = 0; |
|
1513 pid_t new_pid; |
|
1514 CK_RV rv; |
|
1515 |
|
1516 switch (optype) |
|
1517 { |
|
1518 case OP_RSA: |
|
1519 case OP_DSA: |
|
1520 case OP_DH: |
|
1521 case OP_RAND: |
|
1522 case OP_DIGEST: |
|
1523 case OP_CIPHER: |
|
1524 freelist_lock = session_cache[optype].lock; |
|
1525 break; |
|
1526 default: |
|
1527 PK11err(PK11_F_GET_SESSION, |
|
1528 PK11_R_INVALID_OPERATION_TYPE); |
|
1529 return (NULL); |
|
1530 } |
|
1531 (void) pthread_mutex_lock(freelist_lock); |
|
1532 |
|
1533 /* |
|
1534 * Will use it to find out if we forked. We cannot use the PID field in |
|
1535 * the session structure because we could get a newly allocated session |
|
1536 * here, with no PID information. |
|
1537 */ |
|
1538 if (pid == 0) |
|
1539 pid = getpid(); |
|
1540 |
|
1541 freelist = session_cache[optype].head; |
|
1542 sp = freelist; |
|
1543 |
|
1544 /* |
|
1545 * If the free list is empty, allocate new uninitialized (filled |
|
1546 * with zeroes) PK11_SESSION structure otherwise return first |
|
1547 * structure from the freelist. |
|
1548 */ |
|
1549 if (sp == NULL) |
|
1550 { |
|
1551 if ((sp = OPENSSL_malloc(sizeof (PK11_SESSION))) == NULL) |
|
1552 { |
|
1553 PK11err(PK11_F_GET_SESSION, |
|
1554 PK11_R_MALLOC_FAILURE); |
|
1555 goto err; |
|
1556 } |
|
1557 (void) memset(sp, 0, sizeof (PK11_SESSION)); |
|
1558 |
|
1559 /* |
|
1560 * It is a new session so it will look like a cache miss to the |
|
1561 * code below. So, we must not try to to destroy its members so |
|
1562 * mark them as unused. |
|
1563 */ |
|
1564 sp->opdata_rsa_priv_key = CK_INVALID_HANDLE; |
|
1565 sp->opdata_rsa_pub_key = CK_INVALID_HANDLE; |
|
1566 } |
|
1567 else |
|
1568 freelist = sp->next; |
|
1569 |
|
1570 /* |
|
1571 * Check whether we have forked. In that case, we must get rid of all |
|
1572 * inherited sessions and start allocating new ones. |
|
1573 */ |
|
1574 if (pid != (new_pid = getpid())) |
|
1575 { |
|
1576 pid = new_pid; |
|
1577 |
|
1578 /* |
|
1579 * We are a new process and thus need to free any inherited |
|
1580 * PK11_SESSION objects aside from the first session (sp) which |
|
1581 * is the only PK11_SESSION structure we will reuse (for the |
|
1582 * head of the list). |
|
1583 */ |
|
1584 while ((sp1 = freelist) != NULL) |
|
1585 { |
|
1586 freelist = sp1->next; |
|
1587 /* |
|
1588 * NOTE: we do not want to call pk11_free_all_sessions() |
|
1589 * here because it would close underlying PKCS#11 |
|
1590 * sessions and destroy all objects. |
|
1591 */ |
|
1592 pk11_free_nums(sp1, optype); |
|
1593 OPENSSL_free(sp1); |
|
1594 } |
|
1595 |
|
1596 /* we have to free the active list as well. */ |
|
1597 pk11_free_active_list(optype); |
|
1598 |
|
1599 /* Initialize the process */ |
|
1600 rv = pFuncList->C_Initialize(NULL_PTR); |
|
1601 if ((rv != CKR_OK) && (rv != CKR_CRYPTOKI_ALREADY_INITIALIZED)) |
|
1602 { |
|
1603 PK11err_add_data(PK11_F_GET_SESSION, PK11_R_INITIALIZE, |
|
1604 rv); |
|
1605 OPENSSL_free(sp); |
|
1606 sp = NULL; |
|
1607 goto err; |
|
1608 } |
|
1609 |
|
1610 /* |
|
1611 * Choose slot here since the slot table is different on this |
|
1612 * process. If we are here then we must have found at least one |
|
1613 * usable slot before so we don't need to check any_slot_found. |
|
1614 * See pk11_library_init()'s usage of this function for more |
|
1615 * information. |
|
1616 */ |
|
1617 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
1618 if (check_hw_mechanisms() == 0) |
|
1619 goto err; |
|
1620 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
1621 if (pk11_choose_slots(NULL) == 0) |
|
1622 goto err; |
|
1623 |
|
1624 /* Open the global_session for the new process */ |
|
1625 rv = pFuncList->C_OpenSession(SLOTID, CKF_SERIAL_SESSION, |
|
1626 NULL_PTR, NULL_PTR, &global_session); |
|
1627 if (rv != CKR_OK) |
|
1628 { |
|
1629 PK11err_add_data(PK11_F_GET_SESSION, PK11_R_OPENSESSION, |
|
1630 rv); |
|
1631 OPENSSL_free(sp); |
|
1632 sp = NULL; |
|
1633 goto err; |
|
1634 } |
|
1635 |
|
1636 /* |
|
1637 * It is an inherited session from our parent so it needs |
|
1638 * re-initialization. |
|
1639 */ |
|
1640 if (pk11_setup_session(sp, optype) == 0) |
|
1641 { |
|
1642 OPENSSL_free(sp); |
|
1643 sp = NULL; |
|
1644 goto err; |
|
1645 } |
|
1646 if (pk11_token_relogin(sp->session) == 0) |
|
1647 { |
|
1648 /* |
|
1649 * We will keep the session in the cache list and let |
|
1650 * the caller cope with the situation. |
|
1651 */ |
|
1652 freelist = sp; |
|
1653 sp = NULL; |
|
1654 goto err; |
|
1655 } |
|
1656 } |
|
1657 |
|
1658 if (sp->pid == 0) |
|
1659 { |
|
1660 /* It is a new session and needs initialization. */ |
|
1661 if (pk11_setup_session(sp, optype) == 0) |
|
1662 { |
|
1663 OPENSSL_free(sp); |
|
1664 sp = NULL; |
|
1665 } |
|
1666 } |
|
1667 |
|
1668 /* set new head for the list of PK11_SESSION objects */ |
|
1669 session_cache[optype].head = freelist; |
|
1670 |
|
1671 err: |
|
1672 if (sp != NULL) |
|
1673 sp->next = NULL; |
|
1674 |
|
1675 (void) pthread_mutex_unlock(freelist_lock); |
|
1676 |
|
1677 return (sp); |
|
1678 } |
|
1679 |
|
1680 |
|
1681 void |
|
1682 pk11_return_session(PK11_SESSION *sp, PK11_OPTYPE optype) |
|
1683 { |
|
1684 pthread_mutex_t *freelist_lock; |
|
1685 PK11_SESSION *freelist; |
|
1686 |
|
1687 /* |
|
1688 * If this is a session from the parent it will be taken care of and |
|
1689 * freed in pk11_get_session() as part of the post-fork clean up the |
|
1690 * next time we will ask for a new session. |
|
1691 */ |
|
1692 if (sp == NULL || sp->pid != getpid()) |
|
1693 return; |
|
1694 |
|
1695 switch (optype) |
|
1696 { |
|
1697 case OP_RSA: |
|
1698 case OP_DSA: |
|
1699 case OP_DH: |
|
1700 case OP_RAND: |
|
1701 case OP_DIGEST: |
|
1702 case OP_CIPHER: |
|
1703 freelist_lock = session_cache[optype].lock; |
|
1704 break; |
|
1705 default: |
|
1706 PK11err(PK11_F_RETURN_SESSION, |
|
1707 PK11_R_INVALID_OPERATION_TYPE); |
|
1708 return; |
|
1709 } |
|
1710 |
|
1711 (void) pthread_mutex_lock(freelist_lock); |
|
1712 freelist = session_cache[optype].head; |
|
1713 sp->next = freelist; |
|
1714 session_cache[optype].head = sp; |
|
1715 (void) pthread_mutex_unlock(freelist_lock); |
|
1716 } |
|
1717 |
|
1718 |
|
1719 /* Destroy all objects. This function is called when the engine is finished */ |
|
1720 static int pk11_free_all_sessions() |
|
1721 { |
|
1722 int ret = 1; |
|
1723 int type; |
|
1724 |
|
1725 #ifndef OPENSSL_NO_RSA |
|
1726 (void) pk11_destroy_rsa_key_objects(NULL); |
|
1727 #endif /* OPENSSL_NO_RSA */ |
|
1728 #ifndef OPENSSL_NO_DSA |
|
1729 (void) pk11_destroy_dsa_key_objects(NULL); |
|
1730 #endif /* OPENSSL_NO_DSA */ |
|
1731 #ifndef OPENSSL_NO_DH |
|
1732 (void) pk11_destroy_dh_key_objects(NULL); |
|
1733 #endif /* OPENSSL_NO_DH */ |
|
1734 (void) pk11_destroy_cipher_key_objects(NULL); |
|
1735 |
|
1736 /* |
|
1737 * We try to release as much as we can but any error means that we will |
|
1738 * return 0 on exit. |
|
1739 */ |
|
1740 for (type = 0; type < OP_MAX; type++) |
|
1741 { |
|
1742 if (pk11_free_session_list(type) == 0) |
|
1743 ret = 0; |
|
1744 } |
|
1745 |
|
1746 return (ret); |
|
1747 } |
|
1748 |
|
1749 /* |
|
1750 * Destroy session structures from the linked list specified. Free as many |
|
1751 * sessions as possible but any failure in C_CloseSession() means that we |
|
1752 * return an error on return. |
|
1753 */ |
|
1754 static int pk11_free_session_list(PK11_OPTYPE optype) |
|
1755 { |
|
1756 CK_RV rv; |
|
1757 PK11_SESSION *sp = NULL; |
|
1758 PK11_SESSION *freelist = NULL; |
|
1759 pid_t mypid = getpid(); |
|
1760 pthread_mutex_t *freelist_lock; |
|
1761 int ret = 1; |
|
1762 |
|
1763 switch (optype) |
|
1764 { |
|
1765 case OP_RSA: |
|
1766 case OP_DSA: |
|
1767 case OP_DH: |
|
1768 case OP_RAND: |
|
1769 case OP_DIGEST: |
|
1770 case OP_CIPHER: |
|
1771 freelist_lock = session_cache[optype].lock; |
|
1772 break; |
|
1773 default: |
|
1774 PK11err(PK11_F_FREE_ALL_SESSIONS, |
|
1775 PK11_R_INVALID_OPERATION_TYPE); |
|
1776 return (0); |
|
1777 } |
|
1778 |
|
1779 (void) pthread_mutex_lock(freelist_lock); |
|
1780 freelist = session_cache[optype].head; |
|
1781 while ((sp = freelist) != NULL) |
|
1782 { |
|
1783 if (sp->session != CK_INVALID_HANDLE && sp->pid == mypid) |
|
1784 { |
|
1785 rv = pFuncList->C_CloseSession(sp->session); |
|
1786 if (rv != CKR_OK) |
|
1787 { |
|
1788 PK11err_add_data(PK11_F_FREE_ALL_SESSIONS, |
|
1789 PK11_R_CLOSESESSION, rv); |
|
1790 ret = 0; |
|
1791 } |
|
1792 } |
|
1793 freelist = sp->next; |
|
1794 pk11_free_nums(sp, optype); |
|
1795 OPENSSL_free(sp); |
|
1796 } |
|
1797 |
|
1798 (void) pthread_mutex_unlock(freelist_lock); |
|
1799 return (ret); |
|
1800 } |
|
1801 |
|
1802 |
|
1803 static int |
|
1804 pk11_setup_session(PK11_SESSION *sp, PK11_OPTYPE optype) |
|
1805 { |
|
1806 CK_RV rv; |
|
1807 CK_SLOT_ID myslot; |
|
1808 |
|
1809 switch (optype) |
|
1810 { |
|
1811 case OP_RSA: |
|
1812 case OP_DSA: |
|
1813 case OP_DH: |
|
1814 myslot = pubkey_SLOTID; |
|
1815 break; |
|
1816 case OP_RAND: |
|
1817 myslot = rand_SLOTID; |
|
1818 break; |
|
1819 case OP_DIGEST: |
|
1820 case OP_CIPHER: |
|
1821 myslot = SLOTID; |
|
1822 break; |
|
1823 default: |
|
1824 PK11err(PK11_F_SETUP_SESSION, |
|
1825 PK11_R_INVALID_OPERATION_TYPE); |
|
1826 return (0); |
|
1827 } |
|
1828 |
|
1829 sp->session = CK_INVALID_HANDLE; |
|
1830 DEBUG_SLOT_SEL("%s: myslot=%d optype=%d\n", PK11_DBG, myslot, optype); |
|
1831 rv = pFuncList->C_OpenSession(myslot, CKF_SERIAL_SESSION, |
|
1832 NULL_PTR, NULL_PTR, &sp->session); |
|
1833 if (rv == CKR_CRYPTOKI_NOT_INITIALIZED) |
|
1834 { |
|
1835 /* |
|
1836 * We are probably a child process so force the |
|
1837 * reinitialize of the session |
|
1838 */ |
|
1839 pk11_library_initialized = CK_FALSE; |
|
1840 if (!pk11_library_init(NULL)) |
|
1841 return (0); |
|
1842 rv = pFuncList->C_OpenSession(myslot, CKF_SERIAL_SESSION, |
|
1843 NULL_PTR, NULL_PTR, &sp->session); |
|
1844 } |
|
1845 if (rv != CKR_OK) |
|
1846 { |
|
1847 PK11err_add_data(PK11_F_SETUP_SESSION, PK11_R_OPENSESSION, rv); |
|
1848 return (0); |
|
1849 } |
|
1850 |
|
1851 sp->pid = getpid(); |
|
1852 |
|
1853 switch (optype) |
|
1854 { |
|
1855 #ifndef OPENSSL_NO_RSA |
|
1856 case OP_RSA: |
|
1857 sp->opdata_rsa_pub_key = CK_INVALID_HANDLE; |
|
1858 sp->opdata_rsa_priv_key = CK_INVALID_HANDLE; |
|
1859 sp->opdata_rsa_pub = NULL; |
|
1860 sp->opdata_rsa_n_num = NULL; |
|
1861 sp->opdata_rsa_e_num = NULL; |
|
1862 sp->opdata_rsa_priv = NULL; |
|
1863 sp->opdata_rsa_d_num = NULL; |
|
1864 break; |
|
1865 #endif /* OPENSSL_NO_RSA */ |
|
1866 #ifndef OPENSSL_NO_DSA |
|
1867 case OP_DSA: |
|
1868 sp->opdata_dsa_pub_key = CK_INVALID_HANDLE; |
|
1869 sp->opdata_dsa_priv_key = CK_INVALID_HANDLE; |
|
1870 sp->opdata_dsa_pub = NULL; |
|
1871 sp->opdata_dsa_pub_num = NULL; |
|
1872 sp->opdata_dsa_priv = NULL; |
|
1873 sp->opdata_dsa_priv_num = NULL; |
|
1874 break; |
|
1875 #endif /* OPENSSL_NO_DSA */ |
|
1876 #ifndef OPENSSL_NO_DH |
|
1877 case OP_DH: |
|
1878 sp->opdata_dh_key = CK_INVALID_HANDLE; |
|
1879 sp->opdata_dh = NULL; |
|
1880 sp->opdata_dh_priv_num = NULL; |
|
1881 break; |
|
1882 #endif /* OPENSSL_NO_DH */ |
|
1883 case OP_CIPHER: |
|
1884 sp->opdata_cipher_key = CK_INVALID_HANDLE; |
|
1885 sp->opdata_encrypt = -1; |
|
1886 break; |
|
1887 } |
|
1888 |
|
1889 /* |
|
1890 * We always initialize the session as containing a non-persistent |
|
1891 * object. The key load functions set it to persistent if that is so. |
|
1892 */ |
|
1893 sp->persistent = CK_FALSE; |
|
1894 return (1); |
|
1895 } |
|
1896 |
|
1897 #ifndef OPENSSL_NO_RSA |
|
1898 /* |
|
1899 * Destroy all non-NULL RSA parameters. For the RSA keys by reference code, |
|
1900 * public components 'n'/'e' are the key components we use to check for the |
|
1901 * cache hit even for the private keys. So, no matter whether we are destroying |
|
1902 * a public or a private key, we always free what we can. |
|
1903 */ |
|
1904 static void |
|
1905 destroy_all_rsa_params(PK11_SESSION *sp) |
|
1906 { |
|
1907 if (sp->opdata_rsa_n_num != NULL) |
|
1908 { |
|
1909 BN_free(sp->opdata_rsa_n_num); |
|
1910 sp->opdata_rsa_n_num = NULL; |
|
1911 } |
|
1912 if (sp->opdata_rsa_e_num != NULL) |
|
1913 { |
|
1914 BN_free(sp->opdata_rsa_e_num); |
|
1915 sp->opdata_rsa_e_num = NULL; |
|
1916 } |
|
1917 if (sp->opdata_rsa_d_num != NULL) |
|
1918 { |
|
1919 BN_free(sp->opdata_rsa_d_num); |
|
1920 sp->opdata_rsa_d_num = NULL; |
|
1921 } |
|
1922 } |
|
1923 |
|
1924 /* Destroy RSA public key from single session. */ |
|
1925 int |
|
1926 pk11_destroy_rsa_object_pub(PK11_SESSION *sp, CK_BBOOL uselock) |
|
1927 { |
|
1928 int ret = 0; |
|
1929 |
|
1930 if (sp->opdata_rsa_pub_key != CK_INVALID_HANDLE) |
|
1931 { |
|
1932 TRY_OBJ_DESTROY(sp, sp->opdata_rsa_pub_key, |
|
1933 ret, uselock, OP_RSA); |
|
1934 sp->opdata_rsa_pub_key = CK_INVALID_HANDLE; |
|
1935 sp->opdata_rsa_pub = NULL; |
|
1936 destroy_all_rsa_params(sp); |
|
1937 } |
|
1938 |
|
1939 return (ret); |
|
1940 } |
|
1941 |
|
1942 /* Destroy RSA private key from single session. */ |
|
1943 int |
|
1944 pk11_destroy_rsa_object_priv(PK11_SESSION *sp, CK_BBOOL uselock) |
|
1945 { |
|
1946 int ret = 0; |
|
1947 |
|
1948 if (sp->opdata_rsa_priv_key != CK_INVALID_HANDLE) |
|
1949 { |
|
1950 TRY_OBJ_DESTROY(sp, sp->opdata_rsa_priv_key, |
|
1951 ret, uselock, OP_RSA); |
|
1952 sp->opdata_rsa_priv_key = CK_INVALID_HANDLE; |
|
1953 sp->opdata_rsa_priv = NULL; |
|
1954 destroy_all_rsa_params(sp); |
|
1955 } |
|
1956 |
|
1957 return (ret); |
|
1958 } |
|
1959 |
|
1960 /* |
|
1961 * Destroy RSA key object wrapper. If session is NULL, try to destroy all |
|
1962 * objects in the free list. |
|
1963 */ |
|
1964 int |
|
1965 pk11_destroy_rsa_key_objects(PK11_SESSION *session) |
|
1966 { |
|
1967 int ret = 1; |
|
1968 PK11_SESSION *sp = NULL; |
|
1969 PK11_SESSION *local_free_session; |
|
1970 CK_BBOOL uselock = CK_TRUE; |
|
1971 |
|
1972 if (session != NULL) |
|
1973 local_free_session = session; |
|
1974 else |
|
1975 { |
|
1976 (void) pthread_mutex_lock(session_cache[OP_RSA].lock); |
|
1977 local_free_session = session_cache[OP_RSA].head; |
|
1978 uselock = CK_FALSE; |
|
1979 } |
|
1980 |
|
1981 /* |
|
1982 * go through the list of sessions and delete key objects |
|
1983 */ |
|
1984 while ((sp = local_free_session) != NULL) |
|
1985 { |
|
1986 local_free_session = sp->next; |
|
1987 |
|
1988 /* |
|
1989 * Do not terminate list traversal if one of the |
|
1990 * destroy operations fails. |
|
1991 */ |
|
1992 if (pk11_destroy_rsa_object_pub(sp, uselock) == 0) |
|
1993 { |
|
1994 ret = 0; |
|
1995 continue; |
|
1996 } |
|
1997 if (pk11_destroy_rsa_object_priv(sp, uselock) == 0) |
|
1998 { |
|
1999 ret = 0; |
|
2000 continue; |
|
2001 } |
|
2002 } |
|
2003 |
|
2004 if (session == NULL) |
|
2005 (void) pthread_mutex_unlock(session_cache[OP_RSA].lock); |
|
2006 |
|
2007 return (ret); |
|
2008 } |
|
2009 #endif /* OPENSSL_NO_RSA */ |
|
2010 |
|
2011 #ifndef OPENSSL_NO_DSA |
|
2012 /* Destroy DSA public key from single session. */ |
|
2013 int |
|
2014 pk11_destroy_dsa_object_pub(PK11_SESSION *sp, CK_BBOOL uselock) |
|
2015 { |
|
2016 int ret = 0; |
|
2017 |
|
2018 if (sp->opdata_dsa_pub_key != CK_INVALID_HANDLE) |
|
2019 { |
|
2020 TRY_OBJ_DESTROY(sp, sp->opdata_dsa_pub_key, |
|
2021 ret, uselock, OP_DSA); |
|
2022 sp->opdata_dsa_pub_key = CK_INVALID_HANDLE; |
|
2023 sp->opdata_dsa_pub = NULL; |
|
2024 if (sp->opdata_dsa_pub_num != NULL) |
|
2025 { |
|
2026 BN_free(sp->opdata_dsa_pub_num); |
|
2027 sp->opdata_dsa_pub_num = NULL; |
|
2028 } |
|
2029 } |
|
2030 |
|
2031 return (ret); |
|
2032 } |
|
2033 |
|
2034 /* Destroy DSA private key from single session. */ |
|
2035 int |
|
2036 pk11_destroy_dsa_object_priv(PK11_SESSION *sp, CK_BBOOL uselock) |
|
2037 { |
|
2038 int ret = 0; |
|
2039 |
|
2040 if (sp->opdata_dsa_priv_key != CK_INVALID_HANDLE) |
|
2041 { |
|
2042 TRY_OBJ_DESTROY(sp, sp->opdata_dsa_priv_key, |
|
2043 ret, uselock, OP_DSA); |
|
2044 sp->opdata_dsa_priv_key = CK_INVALID_HANDLE; |
|
2045 sp->opdata_dsa_priv = NULL; |
|
2046 if (sp->opdata_dsa_priv_num != NULL) |
|
2047 { |
|
2048 BN_free(sp->opdata_dsa_priv_num); |
|
2049 sp->opdata_dsa_priv_num = NULL; |
|
2050 } |
|
2051 } |
|
2052 |
|
2053 return (ret); |
|
2054 } |
|
2055 |
|
2056 /* |
|
2057 * Destroy DSA key object wrapper. If session is NULL, try to destroy all |
|
2058 * objects in the free list. |
|
2059 */ |
|
2060 int |
|
2061 pk11_destroy_dsa_key_objects(PK11_SESSION *session) |
|
2062 { |
|
2063 int ret = 1; |
|
2064 PK11_SESSION *sp = NULL; |
|
2065 PK11_SESSION *local_free_session; |
|
2066 CK_BBOOL uselock = CK_TRUE; |
|
2067 |
|
2068 if (session != NULL) |
|
2069 local_free_session = session; |
|
2070 else |
|
2071 { |
|
2072 (void) pthread_mutex_lock(session_cache[OP_DSA].lock); |
|
2073 local_free_session = session_cache[OP_DSA].head; |
|
2074 uselock = CK_FALSE; |
|
2075 } |
|
2076 |
|
2077 /* |
|
2078 * go through the list of sessions and delete key objects |
|
2079 */ |
|
2080 while ((sp = local_free_session) != NULL) |
|
2081 { |
|
2082 local_free_session = sp->next; |
|
2083 |
|
2084 /* |
|
2085 * Do not terminate list traversal if one of the |
|
2086 * destroy operations fails. |
|
2087 */ |
|
2088 if (pk11_destroy_dsa_object_pub(sp, uselock) == 0) |
|
2089 { |
|
2090 ret = 0; |
|
2091 continue; |
|
2092 } |
|
2093 if (pk11_destroy_dsa_object_priv(sp, uselock) == 0) |
|
2094 { |
|
2095 ret = 0; |
|
2096 continue; |
|
2097 } |
|
2098 } |
|
2099 |
|
2100 if (session == NULL) |
|
2101 (void) pthread_mutex_unlock(session_cache[OP_DSA].lock); |
|
2102 |
|
2103 return (ret); |
|
2104 } |
|
2105 #endif /* OPENSSL_NO_DSA */ |
|
2106 |
|
2107 #ifndef OPENSSL_NO_DH |
|
2108 /* Destroy DH key from single session. */ |
|
2109 int |
|
2110 pk11_destroy_dh_object(PK11_SESSION *sp, CK_BBOOL uselock) |
|
2111 { |
|
2112 int ret = 0; |
|
2113 |
|
2114 if (sp->opdata_dh_key != CK_INVALID_HANDLE) |
|
2115 { |
|
2116 TRY_OBJ_DESTROY(sp, sp->opdata_dh_key, |
|
2117 ret, uselock, OP_DH); |
|
2118 sp->opdata_dh_key = CK_INVALID_HANDLE; |
|
2119 sp->opdata_dh = NULL; |
|
2120 if (sp->opdata_dh_priv_num != NULL) |
|
2121 { |
|
2122 BN_free(sp->opdata_dh_priv_num); |
|
2123 sp->opdata_dh_priv_num = NULL; |
|
2124 } |
|
2125 } |
|
2126 |
|
2127 return (ret); |
|
2128 } |
|
2129 |
|
2130 /* |
|
2131 * Destroy DH key object wrapper. |
|
2132 * |
|
2133 * arg0: pointer to PKCS#11 engine session structure |
|
2134 * if session is NULL, try to destroy all objects in the free list |
|
2135 */ |
|
2136 int |
|
2137 pk11_destroy_dh_key_objects(PK11_SESSION *session) |
|
2138 { |
|
2139 int ret = 1; |
|
2140 PK11_SESSION *sp = NULL; |
|
2141 PK11_SESSION *local_free_session; |
|
2142 CK_BBOOL uselock = CK_TRUE; |
|
2143 |
|
2144 if (session != NULL) |
|
2145 local_free_session = session; |
|
2146 else |
|
2147 { |
|
2148 (void) pthread_mutex_lock(session_cache[OP_DH].lock); |
|
2149 local_free_session = session_cache[OP_DH].head; |
|
2150 uselock = CK_FALSE; |
|
2151 } |
|
2152 |
|
2153 while ((sp = local_free_session) != NULL) |
|
2154 { |
|
2155 local_free_session = sp->next; |
|
2156 |
|
2157 /* |
|
2158 * Do not terminate list traversal if one of the |
|
2159 * destroy operations fails. |
|
2160 */ |
|
2161 if (pk11_destroy_dh_object(sp, uselock) == 0) |
|
2162 { |
|
2163 ret = 0; |
|
2164 continue; |
|
2165 } |
|
2166 } |
|
2167 if (session == NULL) |
|
2168 (void) pthread_mutex_unlock(session_cache[OP_DH].lock); |
|
2169 |
|
2170 return (ret); |
|
2171 } |
|
2172 #endif /* OPENSSL_NO_DH */ |
|
2173 |
|
2174 static int |
|
2175 pk11_destroy_object(CK_SESSION_HANDLE session, CK_OBJECT_HANDLE oh, |
|
2176 CK_BBOOL persistent) |
|
2177 { |
|
2178 CK_RV rv; |
|
2179 |
|
2180 /* |
|
2181 * We never try to destroy persistent objects which are the objects |
|
2182 * stored in the keystore. Also, we always use read-only sessions so |
|
2183 * C_DestroyObject() would be returning CKR_SESSION_READ_ONLY here. |
|
2184 */ |
|
2185 if (persistent == CK_TRUE) |
|
2186 return (1); |
|
2187 |
|
2188 rv = pFuncList->C_DestroyObject(session, oh); |
|
2189 if (rv != CKR_OK) |
|
2190 { |
|
2191 PK11err_add_data(PK11_F_DESTROY_OBJECT, PK11_R_DESTROYOBJECT, |
|
2192 rv); |
|
2193 return (0); |
|
2194 } |
|
2195 |
|
2196 return (1); |
|
2197 } |
|
2198 |
|
2199 |
|
2200 /* Symmetric ciphers and digests support functions */ |
|
2201 |
|
2202 static int |
|
2203 cipher_nid_to_pk11(int nid) |
|
2204 { |
|
2205 int i; |
|
2206 |
|
2207 for (i = 0; i < PK11_CIPHER_MAX; i++) |
|
2208 if (ciphers[i].nid == nid) |
|
2209 return (ciphers[i].id); |
|
2210 return (-1); |
|
2211 } |
|
2212 |
|
2213 static int |
|
2214 pk11_usable_ciphers(const int **nids) |
|
2215 { |
|
2216 if (cipher_count > 0) |
|
2217 *nids = cipher_nids; |
|
2218 else |
|
2219 *nids = NULL; |
|
2220 return (cipher_count); |
|
2221 } |
|
2222 |
|
2223 static int |
|
2224 pk11_usable_digests(const int **nids) |
|
2225 { |
|
2226 if (digest_count > 0) |
|
2227 *nids = digest_nids; |
|
2228 else |
|
2229 *nids = NULL; |
|
2230 return (digest_count); |
|
2231 } |
|
2232 |
|
2233 /* |
|
2234 * Init context for encryption or decryption using a symmetric key. |
|
2235 */ |
|
2236 static int pk11_init_symmetric(EVP_CIPHER_CTX *ctx, PK11_CIPHER *pcipher, |
|
2237 PK11_SESSION *sp, CK_MECHANISM_PTR pmech) |
|
2238 { |
|
2239 CK_RV rv; |
|
2240 CK_AES_CTR_PARAMS ctr_params; |
|
2241 |
|
2242 /* |
|
2243 * We expect pmech->mechanism to be already set and |
|
2244 * pParameter/ulParameterLen initialized to NULL/0 before |
|
2245 * pk11_init_symmetric() is called. |
|
2246 */ |
|
2247 OPENSSL_assert(pmech->mechanism != NULL); |
|
2248 OPENSSL_assert(pmech->pParameter == NULL); |
|
2249 OPENSSL_assert(pmech->ulParameterLen == 0); |
|
2250 |
|
2251 if (ctx->cipher->nid == NID_aes_128_ctr || |
|
2252 ctx->cipher->nid == NID_aes_192_ctr || |
|
2253 ctx->cipher->nid == NID_aes_256_ctr) |
|
2254 { |
|
2255 pmech->pParameter = (void *)(&ctr_params); |
|
2256 pmech->ulParameterLen = sizeof (ctr_params); |
|
2257 /* |
|
2258 * For now, we are limited to the fixed length of the counter, |
|
2259 * it covers the whole counter block. That's what RFC 4344 |
|
2260 * needs. For more information on internal structure of the |
|
2261 * counter block, see RFC 3686. If needed in the future, we can |
|
2262 * add code so that the counter length can be set via |
|
2263 * ENGINE_ctrl() function. |
|
2264 */ |
|
2265 ctr_params.ulCounterBits = AES_BLOCK_SIZE * 8; |
|
2266 OPENSSL_assert(pcipher->iv_len == AES_BLOCK_SIZE); |
|
2267 (void) memcpy(ctr_params.cb, ctx->iv, AES_BLOCK_SIZE); |
|
2268 } |
|
2269 else |
|
2270 { |
|
2271 if (pcipher->iv_len > 0) |
|
2272 { |
|
2273 pmech->pParameter = (void *)ctx->iv; |
|
2274 pmech->ulParameterLen = pcipher->iv_len; |
|
2275 } |
|
2276 } |
|
2277 |
|
2278 /* if we get here, the encryption needs to be reinitialized */ |
|
2279 if (ctx->encrypt) |
|
2280 rv = pFuncList->C_EncryptInit(sp->session, pmech, |
|
2281 sp->opdata_cipher_key); |
|
2282 else |
|
2283 rv = pFuncList->C_DecryptInit(sp->session, pmech, |
|
2284 sp->opdata_cipher_key); |
|
2285 |
|
2286 if (rv != CKR_OK) |
|
2287 { |
|
2288 PK11err_add_data(PK11_F_CIPHER_INIT, ctx->encrypt ? |
|
2289 PK11_R_ENCRYPTINIT : PK11_R_DECRYPTINIT, rv); |
|
2290 pk11_return_session(sp, OP_CIPHER); |
|
2291 return (0); |
|
2292 } |
|
2293 |
|
2294 return (1); |
|
2295 } |
|
2296 |
|
2297 /* ARGSUSED */ |
|
2298 static int |
|
2299 pk11_cipher_init(EVP_CIPHER_CTX *ctx, const unsigned char *key, |
|
2300 const unsigned char *iv, int enc) |
|
2301 { |
|
2302 CK_MECHANISM mech; |
|
2303 int index; |
|
2304 PK11_CIPHER_STATE *state = (PK11_CIPHER_STATE *) ctx->cipher_data; |
|
2305 PK11_SESSION *sp; |
|
2306 PK11_CIPHER *p_ciph_table_row; |
|
2307 |
|
2308 state->sp = NULL; |
|
2309 |
|
2310 index = cipher_nid_to_pk11(ctx->cipher->nid); |
|
2311 if (index < 0 || index >= PK11_CIPHER_MAX) |
|
2312 return (0); |
|
2313 |
|
2314 p_ciph_table_row = &ciphers[index]; |
|
2315 /* |
|
2316 * iv_len in the ctx->cipher structure is the maximum IV length for the |
|
2317 * current cipher and it must be less or equal to the IV length in our |
|
2318 * ciphers table. The key length must be in the allowed interval. From |
|
2319 * all cipher modes that the PKCS#11 engine supports only RC4 allows a |
|
2320 * key length to be in some range, all other NIDs have a precise key |
|
2321 * length. Every application can define its own EVP functions so this |
|
2322 * code serves as a sanity check. |
|
2323 * |
|
2324 * Note that the reason why the IV length in ctx->cipher might be |
|
2325 * greater than the actual length is that OpenSSL uses BLOCK_CIPHER_defs |
|
2326 * macro to define functions that return EVP structures for all DES |
|
2327 * modes. So, even ECB modes get 8 byte IV. |
|
2328 */ |
|
2329 if (ctx->cipher->iv_len < p_ciph_table_row->iv_len || |
|
2330 ctx->key_len < p_ciph_table_row->min_key_len || |
|
2331 ctx->key_len > p_ciph_table_row->max_key_len) { |
|
2332 PK11err(PK11_F_CIPHER_INIT, PK11_R_KEY_OR_IV_LEN_PROBLEM); |
|
2333 return (0); |
|
2334 } |
|
2335 |
|
2336 if ((sp = pk11_get_session(OP_CIPHER)) == NULL) |
|
2337 return (0); |
|
2338 |
|
2339 /* if applicable, the mechanism parameter is used for IV */ |
|
2340 mech.mechanism = p_ciph_table_row->mech_type; |
|
2341 mech.pParameter = NULL; |
|
2342 mech.ulParameterLen = 0; |
|
2343 |
|
2344 /* The key object is destroyed here if it is not the current key. */ |
|
2345 (void) check_new_cipher_key(sp, key, ctx->key_len); |
|
2346 |
|
2347 /* |
|
2348 * If the key is the same and the encryption is also the same, then |
|
2349 * just reuse it. However, we must not forget to reinitialize the |
|
2350 * context that was finalized in pk11_cipher_cleanup(). |
|
2351 */ |
|
2352 if (sp->opdata_cipher_key != CK_INVALID_HANDLE && |
|
2353 sp->opdata_encrypt == ctx->encrypt) |
|
2354 { |
|
2355 state->sp = sp; |
|
2356 if (pk11_init_symmetric(ctx, p_ciph_table_row, sp, &mech) == 0) |
|
2357 return (0); |
|
2358 |
|
2359 return (1); |
|
2360 } |
|
2361 |
|
2362 /* |
|
2363 * Check if the key has been invalidated. If so, a new key object |
|
2364 * needs to be created. |
|
2365 */ |
|
2366 if (sp->opdata_cipher_key == CK_INVALID_HANDLE) |
|
2367 { |
|
2368 sp->opdata_cipher_key = pk11_get_cipher_key( |
|
2369 ctx, key, p_ciph_table_row->key_type, sp); |
|
2370 } |
|
2371 |
|
2372 if (sp->opdata_encrypt != ctx->encrypt && sp->opdata_encrypt != -1) |
|
2373 { |
|
2374 /* |
|
2375 * The previous encryption/decryption is different. Need to |
|
2376 * terminate the previous * active encryption/decryption here. |
|
2377 */ |
|
2378 if (!pk11_cipher_final(sp)) |
|
2379 { |
|
2380 pk11_return_session(sp, OP_CIPHER); |
|
2381 return (0); |
|
2382 } |
|
2383 } |
|
2384 |
|
2385 if (sp->opdata_cipher_key == CK_INVALID_HANDLE) |
|
2386 { |
|
2387 pk11_return_session(sp, OP_CIPHER); |
|
2388 return (0); |
|
2389 } |
|
2390 |
|
2391 /* now initialize the context with a new key */ |
|
2392 if (pk11_init_symmetric(ctx, p_ciph_table_row, sp, &mech) == 0) |
|
2393 return (0); |
|
2394 |
|
2395 sp->opdata_encrypt = ctx->encrypt; |
|
2396 state->sp = sp; |
|
2397 |
|
2398 return (1); |
|
2399 } |
|
2400 |
|
2401 /* |
|
2402 * When reusing the same key in an encryption/decryption session for a |
|
2403 * decryption/encryption session, we need to close the active session |
|
2404 * and recreate a new one. Note that the key is in the global session so |
|
2405 * that it needs not be recreated. |
|
2406 * |
|
2407 * It is more appropriate to use C_En/DecryptFinish here. At the time of this |
|
2408 * development, these two functions in the PKCS#11 libraries used return |
|
2409 * unexpected errors when passing in 0 length output. It may be a good |
|
2410 * idea to try them again if performance is a problem here and fix |
|
2411 * C_En/DecryptFinial if there are bugs there causing the problem. |
|
2412 */ |
|
2413 static int |
|
2414 pk11_cipher_final(PK11_SESSION *sp) |
|
2415 { |
|
2416 CK_RV rv; |
|
2417 |
|
2418 rv = pFuncList->C_CloseSession(sp->session); |
|
2419 if (rv != CKR_OK) |
|
2420 { |
|
2421 PK11err_add_data(PK11_F_CIPHER_FINAL, PK11_R_CLOSESESSION, rv); |
|
2422 return (0); |
|
2423 } |
|
2424 |
|
2425 rv = pFuncList->C_OpenSession(SLOTID, CKF_SERIAL_SESSION, |
|
2426 NULL_PTR, NULL_PTR, &sp->session); |
|
2427 if (rv != CKR_OK) |
|
2428 { |
|
2429 PK11err_add_data(PK11_F_CIPHER_FINAL, PK11_R_OPENSESSION, rv); |
|
2430 return (0); |
|
2431 } |
|
2432 |
|
2433 return (1); |
|
2434 } |
|
2435 |
|
2436 /* |
|
2437 * An engine interface function. The calling function allocates sufficient |
|
2438 * memory for the output buffer "out" to hold the results. |
|
2439 */ |
|
2440 static int |
|
2441 pk11_cipher_do_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
|
2442 const unsigned char *in, size_t inl) |
|
2443 { |
|
2444 PK11_CIPHER_STATE *state = (PK11_CIPHER_STATE *) ctx->cipher_data; |
|
2445 PK11_SESSION *sp; |
|
2446 CK_RV rv; |
|
2447 unsigned long outl = inl; |
|
2448 |
|
2449 if (state == NULL || state->sp == NULL) |
|
2450 return (0); |
|
2451 |
|
2452 sp = (PK11_SESSION *) state->sp; |
|
2453 |
|
2454 if (!inl) |
|
2455 return (1); |
|
2456 |
|
2457 /* RC4 is the only stream cipher we support */ |
|
2458 if (ctx->cipher->nid != NID_rc4 && (inl % ctx->cipher->block_size) != 0) |
|
2459 return (0); |
|
2460 |
|
2461 if (ctx->encrypt) |
|
2462 { |
|
2463 rv = pFuncList->C_EncryptUpdate(sp->session, |
|
2464 (unsigned char *)in, inl, out, &outl); |
|
2465 |
|
2466 if (rv != CKR_OK) |
|
2467 { |
|
2468 PK11err_add_data(PK11_F_CIPHER_DO_CIPHER, |
|
2469 PK11_R_ENCRYPTUPDATE, rv); |
|
2470 return (0); |
|
2471 } |
|
2472 } |
|
2473 else |
|
2474 { |
|
2475 rv = pFuncList->C_DecryptUpdate(sp->session, |
|
2476 (unsigned char *)in, inl, out, &outl); |
|
2477 |
|
2478 if (rv != CKR_OK) |
|
2479 { |
|
2480 PK11err_add_data(PK11_F_CIPHER_DO_CIPHER, |
|
2481 PK11_R_DECRYPTUPDATE, rv); |
|
2482 return (0); |
|
2483 } |
|
2484 } |
|
2485 |
|
2486 /* |
|
2487 * For DES_CBC, DES3_CBC, AES_CBC, and RC4, the output size is always |
|
2488 * the same size of input. |
|
2489 * The application has guaranteed to call the block ciphers with |
|
2490 * correctly aligned buffers. |
|
2491 */ |
|
2492 if (inl != outl) |
|
2493 return (0); |
|
2494 |
|
2495 return (1); |
|
2496 } |
|
2497 |
|
2498 /* |
|
2499 * Return the session to the pool. Calling C_EncryptFinal() and C_DecryptFinal() |
|
2500 * here is the right thing because in EVP_DecryptFinal_ex(), engine's |
|
2501 * do_cipher() is not even called, and in EVP_EncryptFinal_ex() it is called but |
|
2502 * the engine can't find out that it's the finalizing call. We wouldn't |
|
2503 * necessarily have to finalize the context here since reinitializing it with |
|
2504 * C_(Encrypt|Decrypt)Init() should be fine but for the sake of correctness, |
|
2505 * let's do it. Some implementations might leak memory if the previously used |
|
2506 * context is initialized without finalizing it first. |
|
2507 */ |
|
2508 static int |
|
2509 pk11_cipher_cleanup(EVP_CIPHER_CTX *ctx) |
|
2510 { |
|
2511 CK_RV rv; |
|
2512 CK_ULONG len = EVP_MAX_BLOCK_LENGTH; |
|
2513 CK_BYTE buf[EVP_MAX_BLOCK_LENGTH]; |
|
2514 PK11_CIPHER_STATE *state = ctx->cipher_data; |
|
2515 |
|
2516 if (state != NULL && state->sp != NULL) |
|
2517 { |
|
2518 /* |
|
2519 * We are not interested in the data here, we just need to get |
|
2520 * rid of the context. |
|
2521 */ |
|
2522 if (ctx->encrypt) |
|
2523 rv = pFuncList->C_EncryptFinal( |
|
2524 state->sp->session, buf, &len); |
|
2525 else |
|
2526 rv = pFuncList->C_DecryptFinal( |
|
2527 state->sp->session, buf, &len); |
|
2528 |
|
2529 if (rv != CKR_OK) |
|
2530 { |
|
2531 PK11err_add_data(PK11_F_CIPHER_CLEANUP, ctx->encrypt ? |
|
2532 PK11_R_ENCRYPTFINAL : PK11_R_DECRYPTFINAL, rv); |
|
2533 pk11_return_session(state->sp, OP_CIPHER); |
|
2534 return (0); |
|
2535 } |
|
2536 |
|
2537 pk11_return_session(state->sp, OP_CIPHER); |
|
2538 state->sp = NULL; |
|
2539 } |
|
2540 |
|
2541 return (1); |
|
2542 } |
|
2543 |
|
2544 /* |
|
2545 * Registered by the ENGINE when used to find out how to deal with |
|
2546 * a particular NID in the ENGINE. This says what we'll do at the |
|
2547 * top level - note, that list is restricted by what we answer with |
|
2548 */ |
|
2549 /* ARGSUSED */ |
|
2550 static int |
|
2551 pk11_engine_ciphers(ENGINE *e, const EVP_CIPHER **cipher, |
|
2552 const int **nids, int nid) |
|
2553 { |
|
2554 if (!cipher) |
|
2555 return (pk11_usable_ciphers(nids)); |
|
2556 |
|
2557 switch (nid) |
|
2558 { |
|
2559 case NID_des_ede3_cbc: |
|
2560 *cipher = &pk11_3des_cbc; |
|
2561 break; |
|
2562 case NID_des_cbc: |
|
2563 *cipher = &pk11_des_cbc; |
|
2564 break; |
|
2565 case NID_des_ede3_ecb: |
|
2566 *cipher = &pk11_3des_ecb; |
|
2567 break; |
|
2568 case NID_des_ecb: |
|
2569 *cipher = &pk11_des_ecb; |
|
2570 break; |
|
2571 case NID_aes_128_cbc: |
|
2572 *cipher = &pk11_aes_128_cbc; |
|
2573 break; |
|
2574 case NID_aes_192_cbc: |
|
2575 *cipher = &pk11_aes_192_cbc; |
|
2576 break; |
|
2577 case NID_aes_256_cbc: |
|
2578 *cipher = &pk11_aes_256_cbc; |
|
2579 break; |
|
2580 case NID_aes_128_ecb: |
|
2581 *cipher = &pk11_aes_128_ecb; |
|
2582 break; |
|
2583 case NID_aes_192_ecb: |
|
2584 *cipher = &pk11_aes_192_ecb; |
|
2585 break; |
|
2586 case NID_aes_256_ecb: |
|
2587 *cipher = &pk11_aes_256_ecb; |
|
2588 break; |
|
2589 case NID_aes_128_ctr: |
|
2590 *cipher = &pk11_aes_128_ctr; |
|
2591 break; |
|
2592 case NID_aes_192_ctr: |
|
2593 *cipher = &pk11_aes_192_ctr; |
|
2594 break; |
|
2595 case NID_aes_256_ctr: |
|
2596 *cipher = &pk11_aes_256_ctr; |
|
2597 break; |
|
2598 case NID_bf_cbc: |
|
2599 *cipher = &pk11_bf_cbc; |
|
2600 break; |
|
2601 case NID_rc4: |
|
2602 *cipher = &pk11_rc4; |
|
2603 break; |
|
2604 default: |
|
2605 *cipher = NULL; |
|
2606 break; |
|
2607 } |
|
2608 return (*cipher != NULL); |
|
2609 } |
|
2610 |
|
2611 /* ARGSUSED */ |
|
2612 static int |
|
2613 pk11_engine_digests(ENGINE *e, const EVP_MD **digest, |
|
2614 const int **nids, int nid) |
|
2615 { |
|
2616 if (!digest) |
|
2617 return (pk11_usable_digests(nids)); |
|
2618 |
|
2619 switch (nid) |
|
2620 { |
|
2621 case NID_md5: |
|
2622 *digest = &pk11_md5; |
|
2623 break; |
|
2624 /* |
|
2625 * A special case. For "openssl dgst -dss1 -engine pkcs11 ...", |
|
2626 * OpenSSL calls EVP_get_digestbyname() on "dss1" which ends up |
|
2627 * calling pk11_engine_digests() for NID_dsa. Internally, if an |
|
2628 * engine is not used, OpenSSL uses SHA1_Init() as expected for |
|
2629 * DSA. So, we must return pk11_sha1() for NID_dsa as well. Note |
|
2630 * that this must have changed between 0.9.8 and 1.0.0 since we |
|
2631 * did not have the problem with the 0.9.8 version. |
|
2632 */ |
|
2633 case NID_sha1: |
|
2634 case NID_dsa: |
|
2635 *digest = &pk11_sha1; |
|
2636 break; |
|
2637 case NID_sha224: |
|
2638 *digest = &pk11_sha224; |
|
2639 break; |
|
2640 case NID_sha256: |
|
2641 *digest = &pk11_sha256; |
|
2642 break; |
|
2643 case NID_sha384: |
|
2644 *digest = &pk11_sha384; |
|
2645 break; |
|
2646 case NID_sha512: |
|
2647 *digest = &pk11_sha512; |
|
2648 break; |
|
2649 default: |
|
2650 *digest = NULL; |
|
2651 break; |
|
2652 } |
|
2653 return (*digest != NULL); |
|
2654 } |
|
2655 |
|
2656 |
|
2657 /* Create a secret key object in a PKCS#11 session */ |
|
2658 static CK_OBJECT_HANDLE pk11_get_cipher_key(EVP_CIPHER_CTX *ctx, |
|
2659 const unsigned char *key, CK_KEY_TYPE key_type, PK11_SESSION *sp) |
|
2660 { |
|
2661 CK_RV rv; |
|
2662 CK_OBJECT_HANDLE h_key = CK_INVALID_HANDLE; |
|
2663 CK_OBJECT_CLASS obj_key = CKO_SECRET_KEY; |
|
2664 CK_ULONG ul_key_attr_count = 6; |
|
2665 |
|
2666 CK_ATTRIBUTE a_key_template[] = |
|
2667 { |
|
2668 {CKA_CLASS, (void*) NULL, sizeof (CK_OBJECT_CLASS)}, |
|
2669 {CKA_KEY_TYPE, (void*) NULL, sizeof (CK_KEY_TYPE)}, |
|
2670 {CKA_TOKEN, &pk11_false, sizeof (pk11_false)}, |
|
2671 {CKA_ENCRYPT, &pk11_true, sizeof (pk11_true)}, |
|
2672 {CKA_DECRYPT, &pk11_true, sizeof (pk11_true)}, |
|
2673 {CKA_VALUE, (void*) NULL, 0}, |
|
2674 }; |
|
2675 |
|
2676 /* |
|
2677 * Create secret key object in global_session. All other sessions |
|
2678 * can use the key handles. Here is why: |
|
2679 * OpenSSL will call EncryptInit and EncryptUpdate using a secret key. |
|
2680 * It may then call DecryptInit and DecryptUpdate using the same key. |
|
2681 * To use the same key object, we need to call EncryptFinal with |
|
2682 * a 0 length message. Currently, this does not work for 3DES |
|
2683 * mechanism. To get around this problem, we close the session and |
|
2684 * then create a new session to use the same key object. When a session |
|
2685 * is closed, all the object handles will be invalid. Thus, create key |
|
2686 * objects in a global session, an individual session may be closed to |
|
2687 * terminate the active operation. |
|
2688 */ |
|
2689 CK_SESSION_HANDLE session = global_session; |
|
2690 a_key_template[0].pValue = &obj_key; |
|
2691 a_key_template[1].pValue = &key_type; |
|
2692 a_key_template[5].pValue = (void *) key; |
|
2693 a_key_template[5].ulValueLen = (unsigned long) ctx->key_len; |
|
2694 |
|
2695 rv = pFuncList->C_CreateObject(session, |
|
2696 a_key_template, ul_key_attr_count, &h_key); |
|
2697 if (rv != CKR_OK) |
|
2698 { |
|
2699 PK11err_add_data(PK11_F_GET_CIPHER_KEY, PK11_R_CREATEOBJECT, |
|
2700 rv); |
|
2701 goto err; |
|
2702 } |
|
2703 |
|
2704 /* |
|
2705 * Save the key information used in this session. |
|
2706 * The max can be saved is PK11_KEY_LEN_MAX. |
|
2707 */ |
|
2708 sp->opdata_key_len = ctx->key_len > PK11_KEY_LEN_MAX ? |
|
2709 PK11_KEY_LEN_MAX : ctx->key_len; |
|
2710 (void) memcpy(sp->opdata_key, key, sp->opdata_key_len); |
|
2711 err: |
|
2712 |
|
2713 return (h_key); |
|
2714 } |
|
2715 |
|
2716 static int |
|
2717 md_nid_to_pk11(int nid) |
|
2718 { |
|
2719 int i; |
|
2720 |
|
2721 for (i = 0; i < PK11_DIGEST_MAX; i++) |
|
2722 if (digests[i].nid == nid) |
|
2723 return (digests[i].id); |
|
2724 return (-1); |
|
2725 } |
|
2726 |
|
2727 static int |
|
2728 pk11_digest_init(EVP_MD_CTX *ctx) |
|
2729 { |
|
2730 CK_RV rv; |
|
2731 CK_MECHANISM mech; |
|
2732 int index; |
|
2733 PK11_SESSION *sp; |
|
2734 PK11_DIGEST *pdp; |
|
2735 PK11_CIPHER_STATE *state = (PK11_CIPHER_STATE *) ctx->md_data; |
|
2736 |
|
2737 state->sp = NULL; |
|
2738 |
|
2739 index = md_nid_to_pk11(ctx->digest->type); |
|
2740 if (index < 0 || index >= PK11_DIGEST_MAX) |
|
2741 return (0); |
|
2742 |
|
2743 pdp = &digests[index]; |
|
2744 if ((sp = pk11_get_session(OP_DIGEST)) == NULL) |
|
2745 return (0); |
|
2746 |
|
2747 /* at present, no parameter is needed for supported digests */ |
|
2748 mech.mechanism = pdp->mech_type; |
|
2749 mech.pParameter = NULL; |
|
2750 mech.ulParameterLen = 0; |
|
2751 |
|
2752 rv = pFuncList->C_DigestInit(sp->session, &mech); |
|
2753 |
|
2754 if (rv != CKR_OK) |
|
2755 { |
|
2756 PK11err_add_data(PK11_F_DIGEST_INIT, PK11_R_DIGESTINIT, rv); |
|
2757 pk11_return_session(sp, OP_DIGEST); |
|
2758 return (0); |
|
2759 } |
|
2760 |
|
2761 state->sp = sp; |
|
2762 |
|
2763 return (1); |
|
2764 } |
|
2765 |
|
2766 static int |
|
2767 pk11_digest_update(EVP_MD_CTX *ctx, const void *data, size_t count) |
|
2768 { |
|
2769 CK_RV rv; |
|
2770 PK11_CIPHER_STATE *state = (PK11_CIPHER_STATE *) ctx->md_data; |
|
2771 |
|
2772 /* 0 length message will cause a failure in C_DigestFinal */ |
|
2773 if (count == 0) |
|
2774 return (1); |
|
2775 |
|
2776 if (state == NULL || state->sp == NULL) |
|
2777 return (0); |
|
2778 |
|
2779 rv = pFuncList->C_DigestUpdate(state->sp->session, (CK_BYTE *) data, |
|
2780 count); |
|
2781 |
|
2782 if (rv != CKR_OK) |
|
2783 { |
|
2784 PK11err_add_data(PK11_F_DIGEST_UPDATE, PK11_R_DIGESTUPDATE, rv); |
|
2785 pk11_return_session(state->sp, OP_DIGEST); |
|
2786 state->sp = NULL; |
|
2787 return (0); |
|
2788 } |
|
2789 |
|
2790 return (1); |
|
2791 } |
|
2792 |
|
2793 static int |
|
2794 pk11_digest_final(EVP_MD_CTX *ctx, unsigned char *md) |
|
2795 { |
|
2796 CK_RV rv; |
|
2797 unsigned long len; |
|
2798 PK11_CIPHER_STATE *state = (PK11_CIPHER_STATE *) ctx->md_data; |
|
2799 len = ctx->digest->md_size; |
|
2800 |
|
2801 if (state == NULL || state->sp == NULL) |
|
2802 return (0); |
|
2803 |
|
2804 rv = pFuncList->C_DigestFinal(state->sp->session, md, &len); |
|
2805 |
|
2806 if (rv != CKR_OK) |
|
2807 { |
|
2808 PK11err_add_data(PK11_F_DIGEST_FINAL, PK11_R_DIGESTFINAL, rv); |
|
2809 pk11_return_session(state->sp, OP_DIGEST); |
|
2810 state->sp = NULL; |
|
2811 return (0); |
|
2812 } |
|
2813 |
|
2814 if (ctx->digest->md_size != len) |
|
2815 return (0); |
|
2816 |
|
2817 /* |
|
2818 * Final is called and digest is returned, so return the session |
|
2819 * to the pool |
|
2820 */ |
|
2821 pk11_return_session(state->sp, OP_DIGEST); |
|
2822 state->sp = NULL; |
|
2823 |
|
2824 return (1); |
|
2825 } |
|
2826 |
|
2827 static int |
|
2828 pk11_digest_copy(EVP_MD_CTX *to, const EVP_MD_CTX *from) |
|
2829 { |
|
2830 CK_RV rv; |
|
2831 int ret = 0; |
|
2832 PK11_CIPHER_STATE *state, *state_to; |
|
2833 CK_BYTE_PTR pstate = NULL; |
|
2834 CK_ULONG ul_state_len; |
|
2835 |
|
2836 if (from->md_data == NULL || to->digest->ctx_size == 0) |
|
2837 return (1); |
|
2838 |
|
2839 /* The copy-from state */ |
|
2840 state = (PK11_CIPHER_STATE *) from->md_data; |
|
2841 if (state->sp == NULL) |
|
2842 goto err; |
|
2843 |
|
2844 /* Initialize the copy-to state */ |
|
2845 if (!pk11_digest_init(to)) |
|
2846 goto err; |
|
2847 state_to = (PK11_CIPHER_STATE *) to->md_data; |
|
2848 |
|
2849 /* Get the size of the operation state of the copy-from session */ |
|
2850 rv = pFuncList->C_GetOperationState(state->sp->session, NULL, |
|
2851 &ul_state_len); |
|
2852 |
|
2853 if (rv != CKR_OK) |
|
2854 { |
|
2855 PK11err_add_data(PK11_F_DIGEST_COPY, PK11_R_GET_OPERATION_STATE, |
|
2856 rv); |
|
2857 goto err; |
|
2858 } |
|
2859 if (ul_state_len == 0) |
|
2860 { |
|
2861 goto err; |
|
2862 } |
|
2863 |
|
2864 pstate = OPENSSL_malloc(ul_state_len); |
|
2865 if (pstate == NULL) |
|
2866 { |
|
2867 PK11err(PK11_F_DIGEST_COPY, PK11_R_MALLOC_FAILURE); |
|
2868 goto err; |
|
2869 } |
|
2870 |
|
2871 /* Get the operation state of the copy-from session */ |
|
2872 rv = pFuncList->C_GetOperationState(state->sp->session, pstate, |
|
2873 &ul_state_len); |
|
2874 |
|
2875 if (rv != CKR_OK) |
|
2876 { |
|
2877 PK11err_add_data(PK11_F_DIGEST_COPY, PK11_R_GET_OPERATION_STATE, |
|
2878 rv); |
|
2879 goto err; |
|
2880 } |
|
2881 |
|
2882 /* Set the operation state of the copy-to session */ |
|
2883 rv = pFuncList->C_SetOperationState(state_to->sp->session, pstate, |
|
2884 ul_state_len, 0, 0); |
|
2885 |
|
2886 if (rv != CKR_OK) |
|
2887 { |
|
2888 PK11err_add_data(PK11_F_DIGEST_COPY, |
|
2889 PK11_R_SET_OPERATION_STATE, rv); |
|
2890 goto err; |
|
2891 } |
|
2892 |
|
2893 ret = 1; |
|
2894 err: |
|
2895 if (pstate != NULL) |
|
2896 OPENSSL_free(pstate); |
|
2897 |
|
2898 return (ret); |
|
2899 } |
|
2900 |
|
2901 /* Return any pending session state to the pool */ |
|
2902 static int |
|
2903 pk11_digest_cleanup(EVP_MD_CTX *ctx) |
|
2904 { |
|
2905 PK11_CIPHER_STATE *state = ctx->md_data; |
|
2906 unsigned char buf[EVP_MAX_MD_SIZE]; |
|
2907 |
|
2908 if (state != NULL && state->sp != NULL) |
|
2909 { |
|
2910 /* |
|
2911 * If state->sp is not NULL then pk11_digest_final() has not |
|
2912 * been called yet. We must call it now to free any memory |
|
2913 * that might have been allocated in the token when |
|
2914 * pk11_digest_init() was called. pk11_digest_final() |
|
2915 * will return the session to the cache. |
|
2916 */ |
|
2917 if (!pk11_digest_final(ctx, buf)) |
|
2918 return (0); |
|
2919 } |
|
2920 |
|
2921 return (1); |
|
2922 } |
|
2923 |
|
2924 /* |
|
2925 * Check if the new key is the same as the key object in the session. If the key |
|
2926 * is the same, no need to create a new key object. Otherwise, the old key |
|
2927 * object needs to be destroyed and a new one will be created. Return 1 for |
|
2928 * cache hit, 0 for cache miss. Note that we must check the key length first |
|
2929 * otherwise we could end up reusing a different, longer key with the same |
|
2930 * prefix. |
|
2931 */ |
|
2932 static int check_new_cipher_key(PK11_SESSION *sp, const unsigned char *key, |
|
2933 int key_len) |
|
2934 { |
|
2935 if (sp->opdata_key_len != key_len || |
|
2936 memcmp(sp->opdata_key, key, key_len) != 0) |
|
2937 { |
|
2938 (void) pk11_destroy_cipher_key_objects(sp); |
|
2939 return (0); |
|
2940 } |
|
2941 return (1); |
|
2942 } |
|
2943 |
|
2944 /* Destroy one or more secret key objects. */ |
|
2945 static int pk11_destroy_cipher_key_objects(PK11_SESSION *session) |
|
2946 { |
|
2947 int ret = 0; |
|
2948 PK11_SESSION *sp = NULL; |
|
2949 PK11_SESSION *local_free_session; |
|
2950 |
|
2951 if (session != NULL) |
|
2952 local_free_session = session; |
|
2953 else |
|
2954 { |
|
2955 (void) pthread_mutex_lock(session_cache[OP_CIPHER].lock); |
|
2956 local_free_session = session_cache[OP_CIPHER].head; |
|
2957 } |
|
2958 |
|
2959 while ((sp = local_free_session) != NULL) |
|
2960 { |
|
2961 local_free_session = sp->next; |
|
2962 |
|
2963 if (sp->opdata_cipher_key != CK_INVALID_HANDLE) |
|
2964 { |
|
2965 /* |
|
2966 * The secret key object is created in the |
|
2967 * global_session. See pk11_get_cipher_key(). |
|
2968 */ |
|
2969 if (pk11_destroy_object(global_session, |
|
2970 sp->opdata_cipher_key, CK_FALSE) == 0) |
|
2971 goto err; |
|
2972 sp->opdata_cipher_key = CK_INVALID_HANDLE; |
|
2973 } |
|
2974 } |
|
2975 ret = 1; |
|
2976 err: |
|
2977 |
|
2978 if (session == NULL) |
|
2979 (void) pthread_mutex_unlock(session_cache[OP_CIPHER].lock); |
|
2980 |
|
2981 return (ret); |
|
2982 } |
|
2983 |
|
2984 |
|
2985 /* |
|
2986 * Public key mechanisms optionally supported |
|
2987 * |
|
2988 * CKM_RSA_X_509 |
|
2989 * CKM_RSA_PKCS |
|
2990 * CKM_DSA |
|
2991 * |
|
2992 * The first slot that supports at least one of those mechanisms is chosen as a |
|
2993 * public key slot. |
|
2994 * |
|
2995 * Symmetric ciphers optionally supported |
|
2996 * |
|
2997 * CKM_DES3_CBC |
|
2998 * CKM_DES_CBC |
|
2999 * CKM_AES_CBC |
|
3000 * CKM_DES3_ECB |
|
3001 * CKM_DES_ECB |
|
3002 * CKM_AES_ECB |
|
3003 * CKM_AES_CTR |
|
3004 * CKM_RC4 |
|
3005 * CKM_BLOWFISH_CBC |
|
3006 * |
|
3007 * Digests optionally supported |
|
3008 * |
|
3009 * CKM_MD5 |
|
3010 * CKM_SHA_1 |
|
3011 * CKM_SHA224 |
|
3012 * CKM_SHA256 |
|
3013 * CKM_SHA384 |
|
3014 * CKM_SHA512 |
|
3015 * |
|
3016 * The output of this function is a set of global variables indicating which |
|
3017 * mechanisms from RSA, DSA, DH and RAND are present, and also two arrays of |
|
3018 * mechanisms, one for symmetric ciphers and one for digests. Also, 3 global |
|
3019 * variables carry information about which slot was chosen for (a) public key |
|
3020 * mechanisms, (b) random operations, and (c) symmetric ciphers and digests. |
|
3021 */ |
|
3022 static int |
|
3023 pk11_choose_slots(int *any_slot_found) |
|
3024 { |
|
3025 CK_SLOT_ID_PTR pSlotList = NULL_PTR; |
|
3026 CK_ULONG ulSlotCount = 0; |
|
3027 CK_MECHANISM_INFO mech_info; |
|
3028 CK_TOKEN_INFO token_info; |
|
3029 int i; |
|
3030 CK_RV rv; |
|
3031 CK_SLOT_ID best_slot_sofar; |
|
3032 CK_BBOOL found_candidate_slot = CK_FALSE; |
|
3033 int slot_n_cipher = 0; |
|
3034 int slot_n_digest = 0; |
|
3035 CK_SLOT_ID current_slot = 0; |
|
3036 int current_slot_n_cipher = 0; |
|
3037 int current_slot_n_digest = 0; |
|
3038 |
|
3039 int local_cipher_nids[PK11_CIPHER_MAX]; |
|
3040 int local_digest_nids[PK11_DIGEST_MAX]; |
|
3041 |
|
3042 /* let's initialize the output parameter */ |
|
3043 if (any_slot_found != NULL) |
|
3044 *any_slot_found = 0; |
|
3045 |
|
3046 /* Get slot list for memory allocation */ |
|
3047 rv = pFuncList->C_GetSlotList(CK_FALSE, NULL_PTR, &ulSlotCount); |
|
3048 |
|
3049 if (rv != CKR_OK) |
|
3050 { |
|
3051 PK11err_add_data(PK11_F_CHOOSE_SLOT, PK11_R_GETSLOTLIST, rv); |
|
3052 return (0); |
|
3053 } |
|
3054 |
|
3055 /* it's not an error if we didn't find any providers */ |
|
3056 if (ulSlotCount == 0) |
|
3057 { |
|
3058 DEBUG_SLOT_SEL("%s: no crypto providers found\n", PK11_DBG); |
|
3059 return (1); |
|
3060 } |
|
3061 |
|
3062 pSlotList = OPENSSL_malloc(ulSlotCount * sizeof (CK_SLOT_ID)); |
|
3063 |
|
3064 if (pSlotList == NULL) |
|
3065 { |
|
3066 PK11err(PK11_F_CHOOSE_SLOT, PK11_R_MALLOC_FAILURE); |
|
3067 return (0); |
|
3068 } |
|
3069 |
|
3070 /* Get the slot list for processing */ |
|
3071 rv = pFuncList->C_GetSlotList(CK_FALSE, pSlotList, &ulSlotCount); |
|
3072 if (rv != CKR_OK) |
|
3073 { |
|
3074 PK11err_add_data(PK11_F_CHOOSE_SLOT, PK11_R_GETSLOTLIST, rv); |
|
3075 OPENSSL_free(pSlotList); |
|
3076 return (0); |
|
3077 } |
|
3078 |
|
3079 DEBUG_SLOT_SEL("%s: provider: %s\n", PK11_DBG, def_PK11_LIBNAME); |
|
3080 DEBUG_SLOT_SEL("%s: number of slots: %d\n", PK11_DBG, ulSlotCount); |
|
3081 |
|
3082 DEBUG_SLOT_SEL("%s: == checking rand slots ==\n", PK11_DBG); |
|
3083 for (i = 0; i < ulSlotCount; i++) |
|
3084 { |
|
3085 current_slot = pSlotList[i]; |
|
3086 |
|
3087 DEBUG_SLOT_SEL("%s: checking slot: %d\n", PK11_DBG, i); |
|
3088 /* Check if slot has random support. */ |
|
3089 rv = pFuncList->C_GetTokenInfo(current_slot, &token_info); |
|
3090 if (rv != CKR_OK) |
|
3091 continue; |
|
3092 |
|
3093 DEBUG_SLOT_SEL("%s: token label: %.32s\n", PK11_DBG, |
|
3094 token_info.label); |
|
3095 |
|
3096 if (token_info.flags & CKF_RNG) |
|
3097 { |
|
3098 DEBUG_SLOT_SEL( |
|
3099 "%s: this token has CKF_RNG flag\n", PK11_DBG); |
|
3100 pk11_have_random = CK_TRUE; |
|
3101 rand_SLOTID = current_slot; |
|
3102 break; |
|
3103 } |
|
3104 } |
|
3105 |
|
3106 DEBUG_SLOT_SEL("%s: == checking pubkey slots ==\n", PK11_DBG); |
|
3107 |
|
3108 pubkey_SLOTID = pSlotList[0]; |
|
3109 for (i = 0; i < ulSlotCount; i++) |
|
3110 { |
|
3111 CK_BBOOL slot_has_rsa = CK_FALSE; |
|
3112 CK_BBOOL slot_has_dsa = CK_FALSE; |
|
3113 CK_BBOOL slot_has_dh = CK_FALSE; |
|
3114 current_slot = pSlotList[i]; |
|
3115 |
|
3116 DEBUG_SLOT_SEL("%s: checking slot: %d\n", PK11_DBG, i); |
|
3117 rv = pFuncList->C_GetTokenInfo(current_slot, &token_info); |
|
3118 if (rv != CKR_OK) |
|
3119 continue; |
|
3120 |
|
3121 DEBUG_SLOT_SEL("%s: token label: %.32s\n", PK11_DBG, |
|
3122 token_info.label); |
|
3123 |
|
3124 #ifndef OPENSSL_NO_RSA |
|
3125 /* |
|
3126 * Check if this slot is capable of signing and |
|
3127 * verifying with CKM_RSA_PKCS. |
|
3128 */ |
|
3129 rv = pFuncList->C_GetMechanismInfo(current_slot, CKM_RSA_PKCS, |
|
3130 &mech_info); |
|
3131 |
|
3132 if (rv == CKR_OK && ((mech_info.flags & CKF_SIGN) && |
|
3133 (mech_info.flags & CKF_VERIFY))) |
|
3134 { |
|
3135 /* |
|
3136 * Check if this slot is capable of encryption, |
|
3137 * decryption, sign, and verify with CKM_RSA_X_509. |
|
3138 */ |
|
3139 rv = pFuncList->C_GetMechanismInfo(current_slot, |
|
3140 CKM_RSA_X_509, &mech_info); |
|
3141 |
|
3142 if (rv == CKR_OK && ((mech_info.flags & CKF_SIGN) && |
|
3143 (mech_info.flags & CKF_VERIFY) && |
|
3144 (mech_info.flags & CKF_ENCRYPT) && |
|
3145 (mech_info.flags & CKF_VERIFY_RECOVER) && |
|
3146 (mech_info.flags & CKF_DECRYPT))) |
|
3147 { |
|
3148 slot_has_rsa = CK_TRUE; |
|
3149 } |
|
3150 } |
|
3151 #endif /* OPENSSL_NO_RSA */ |
|
3152 |
|
3153 #ifndef OPENSSL_NO_DSA |
|
3154 /* |
|
3155 * Check if this slot is capable of signing and |
|
3156 * verifying with CKM_DSA. |
|
3157 */ |
|
3158 rv = pFuncList->C_GetMechanismInfo(current_slot, CKM_DSA, |
|
3159 &mech_info); |
|
3160 if (rv == CKR_OK && ((mech_info.flags & CKF_SIGN) && |
|
3161 (mech_info.flags & CKF_VERIFY))) |
|
3162 { |
|
3163 slot_has_dsa = CK_TRUE; |
|
3164 } |
|
3165 |
|
3166 #endif /* OPENSSL_NO_DSA */ |
|
3167 |
|
3168 #ifndef OPENSSL_NO_DH |
|
3169 /* |
|
3170 * Check if this slot is capable of DH key generataion and |
|
3171 * derivation. |
|
3172 */ |
|
3173 rv = pFuncList->C_GetMechanismInfo(current_slot, |
|
3174 CKM_DH_PKCS_KEY_PAIR_GEN, &mech_info); |
|
3175 |
|
3176 if (rv == CKR_OK && (mech_info.flags & CKF_GENERATE_KEY_PAIR)) |
|
3177 { |
|
3178 rv = pFuncList->C_GetMechanismInfo(current_slot, |
|
3179 CKM_DH_PKCS_DERIVE, &mech_info); |
|
3180 if (rv == CKR_OK && (mech_info.flags & CKF_DERIVE)) |
|
3181 { |
|
3182 slot_has_dh = CK_TRUE; |
|
3183 } |
|
3184 } |
|
3185 #endif /* OPENSSL_NO_DH */ |
|
3186 |
|
3187 if (!found_candidate_slot && |
|
3188 (slot_has_rsa || slot_has_dsa || slot_has_dh)) |
|
3189 { |
|
3190 DEBUG_SLOT_SEL( |
|
3191 "%s: potential slot: %d\n", PK11_DBG, current_slot); |
|
3192 best_slot_sofar = current_slot; |
|
3193 pk11_have_rsa = slot_has_rsa; |
|
3194 pk11_have_dsa = slot_has_dsa; |
|
3195 pk11_have_dh = slot_has_dh; |
|
3196 found_candidate_slot = CK_TRUE; |
|
3197 /* |
|
3198 * Cache the flags for later use. We might need those if |
|
3199 * RSA keys by reference feature is used. |
|
3200 */ |
|
3201 pubkey_token_flags = token_info.flags; |
|
3202 DEBUG_SLOT_SEL( |
|
3203 "%s: setting found_candidate_slot to CK_TRUE\n", |
|
3204 PK11_DBG); |
|
3205 DEBUG_SLOT_SEL("%s: best slot so far: %d\n", PK11_DBG, |
|
3206 best_slot_sofar); |
|
3207 DEBUG_SLOT_SEL("%s: pubkey flags changed to " |
|
3208 "%lu.\n", PK11_DBG, pubkey_token_flags); |
|
3209 } |
|
3210 else |
|
3211 { |
|
3212 DEBUG_SLOT_SEL("%s: no rsa/dsa/dh\n", PK11_DBG); |
|
3213 } |
|
3214 } /* for */ |
|
3215 |
|
3216 if (found_candidate_slot == CK_TRUE) |
|
3217 { |
|
3218 pubkey_SLOTID = best_slot_sofar; |
|
3219 } |
|
3220 |
|
3221 found_candidate_slot = CK_FALSE; |
|
3222 best_slot_sofar = 0; |
|
3223 |
|
3224 DEBUG_SLOT_SEL("%s: == checking cipher/digest ==\n", PK11_DBG); |
|
3225 |
|
3226 SLOTID = pSlotList[0]; |
|
3227 for (i = 0; i < ulSlotCount; i++) |
|
3228 { |
|
3229 DEBUG_SLOT_SEL("%s: checking slot: %d\n", PK11_DBG, i); |
|
3230 |
|
3231 current_slot = pSlotList[i]; |
|
3232 current_slot_n_cipher = 0; |
|
3233 current_slot_n_digest = 0; |
|
3234 (void) memset(local_cipher_nids, 0, sizeof (local_cipher_nids)); |
|
3235 (void) memset(local_digest_nids, 0, sizeof (local_digest_nids)); |
|
3236 |
|
3237 pk11_find_symmetric_ciphers(pFuncList, current_slot, |
|
3238 ¤t_slot_n_cipher, local_cipher_nids); |
|
3239 |
|
3240 pk11_find_digests(pFuncList, current_slot, |
|
3241 ¤t_slot_n_digest, local_digest_nids); |
|
3242 |
|
3243 DEBUG_SLOT_SEL("%s: current_slot_n_cipher %d\n", PK11_DBG, |
|
3244 current_slot_n_cipher); |
|
3245 DEBUG_SLOT_SEL("%s: current_slot_n_digest %d\n", PK11_DBG, |
|
3246 current_slot_n_digest); |
|
3247 DEBUG_SLOT_SEL("%s: best cipher/digest slot so far: %d\n", |
|
3248 PK11_DBG, best_slot_sofar); |
|
3249 |
|
3250 /* |
|
3251 * If the current slot supports more ciphers/digests than |
|
3252 * the previous best one we change the current best to this one, |
|
3253 * otherwise leave it where it is. |
|
3254 */ |
|
3255 if ((current_slot_n_cipher + current_slot_n_digest) > |
|
3256 (slot_n_cipher + slot_n_digest)) |
|
3257 { |
|
3258 DEBUG_SLOT_SEL("%s: changing best slot to %d\n", |
|
3259 PK11_DBG, current_slot); |
|
3260 best_slot_sofar = SLOTID = current_slot; |
|
3261 cipher_count = slot_n_cipher = current_slot_n_cipher; |
|
3262 digest_count = slot_n_digest = current_slot_n_digest; |
|
3263 (void) memcpy(cipher_nids, local_cipher_nids, |
|
3264 sizeof (local_cipher_nids)); |
|
3265 (void) memcpy(digest_nids, local_digest_nids, |
|
3266 sizeof (local_digest_nids)); |
|
3267 } |
|
3268 } |
|
3269 |
|
3270 DEBUG_SLOT_SEL("%s: chosen pubkey slot: %d\n", PK11_DBG, pubkey_SLOTID); |
|
3271 DEBUG_SLOT_SEL("%s: chosen rand slot: %d\n", PK11_DBG, rand_SLOTID); |
|
3272 DEBUG_SLOT_SEL("%s: chosen cipher/digest slot: %d\n", PK11_DBG, SLOTID); |
|
3273 DEBUG_SLOT_SEL("%s: pk11_have_rsa %d\n", PK11_DBG, pk11_have_rsa); |
|
3274 DEBUG_SLOT_SEL("%s: pk11_have_dsa %d\n", PK11_DBG, pk11_have_dsa); |
|
3275 DEBUG_SLOT_SEL("%s: pk11_have_dh %d\n", PK11_DBG, pk11_have_dh); |
|
3276 DEBUG_SLOT_SEL("%s: pk11_have_random %d\n", PK11_DBG, pk11_have_random); |
|
3277 DEBUG_SLOT_SEL("%s: cipher_count %d\n", PK11_DBG, cipher_count); |
|
3278 DEBUG_SLOT_SEL("%s: digest_count %d\n", PK11_DBG, digest_count); |
|
3279 |
|
3280 if (pSlotList != NULL) |
|
3281 OPENSSL_free(pSlotList); |
|
3282 |
|
3283 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3284 OPENSSL_free(hw_cnids); |
|
3285 OPENSSL_free(hw_dnids); |
|
3286 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3287 |
|
3288 if (any_slot_found != NULL) |
|
3289 *any_slot_found = 1; |
|
3290 return (1); |
|
3291 } |
|
3292 |
|
3293 static void pk11_get_symmetric_cipher(CK_FUNCTION_LIST_PTR pflist, |
|
3294 int slot_id, int *current_slot_n_cipher, int *local_cipher_nids, |
|
3295 PK11_CIPHER *cipher) |
|
3296 { |
|
3297 CK_MECHANISM_INFO mech_info; |
|
3298 CK_RV rv; |
|
3299 |
|
3300 DEBUG_SLOT_SEL("%s: checking mech: %x", PK11_DBG, cipher->mech_type); |
|
3301 rv = pflist->C_GetMechanismInfo(slot_id, cipher->mech_type, &mech_info); |
|
3302 |
|
3303 if (rv != CKR_OK) |
|
3304 { |
|
3305 DEBUG_SLOT_SEL(" not found\n"); |
|
3306 return; |
|
3307 } |
|
3308 |
|
3309 if ((mech_info.flags & CKF_ENCRYPT) && |
|
3310 (mech_info.flags & CKF_DECRYPT)) |
|
3311 { |
|
3312 if (mech_info.ulMinKeySize > cipher->min_key_len || |
|
3313 mech_info.ulMaxKeySize < cipher->max_key_len) |
|
3314 { |
|
3315 DEBUG_SLOT_SEL(" engine key size range <%i-%i> does not" |
|
3316 " match mech range <%lu-%lu>\n", |
|
3317 cipher->min_key_len, cipher->max_key_len, |
|
3318 mech_info.ulMinKeySize, mech_info.ulMaxKeySize); |
|
3319 return; |
|
3320 } |
|
3321 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3322 if (nid_in_table(cipher->nid, hw_cnids)) |
|
3323 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3324 { |
|
3325 DEBUG_SLOT_SEL(" usable\n"); |
|
3326 local_cipher_nids[(*current_slot_n_cipher)++] = |
|
3327 cipher->nid; |
|
3328 } |
|
3329 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3330 else |
|
3331 { |
|
3332 DEBUG_SLOT_SEL( |
|
3333 " rejected, software implementation only\n"); |
|
3334 } |
|
3335 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3336 } |
|
3337 else |
|
3338 { |
|
3339 DEBUG_SLOT_SEL(" unusable\n"); |
|
3340 } |
|
3341 |
|
3342 return; |
|
3343 } |
|
3344 |
|
3345 static void pk11_get_digest(CK_FUNCTION_LIST_PTR pflist, int slot_id, |
|
3346 int *current_slot_n_digest, int *local_digest_nids, PK11_DIGEST *digest) |
|
3347 { |
|
3348 CK_MECHANISM_INFO mech_info; |
|
3349 CK_RV rv; |
|
3350 |
|
3351 DEBUG_SLOT_SEL("%s: checking mech: %x", PK11_DBG, digest->mech_type); |
|
3352 rv = pflist->C_GetMechanismInfo(slot_id, digest->mech_type, &mech_info); |
|
3353 |
|
3354 if (rv != CKR_OK) |
|
3355 { |
|
3356 DEBUG_SLOT_SEL(" not found\n"); |
|
3357 return; |
|
3358 } |
|
3359 |
|
3360 if (mech_info.flags & CKF_DIGEST) |
|
3361 { |
|
3362 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3363 if (nid_in_table(digest->nid, hw_dnids)) |
|
3364 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3365 { |
|
3366 DEBUG_SLOT_SEL(" usable\n"); |
|
3367 local_digest_nids[(*current_slot_n_digest)++] = |
|
3368 digest->nid; |
|
3369 } |
|
3370 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3371 else |
|
3372 { |
|
3373 DEBUG_SLOT_SEL( |
|
3374 " rejected, software implementation only\n"); |
|
3375 } |
|
3376 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3377 } |
|
3378 else |
|
3379 { |
|
3380 DEBUG_SLOT_SEL(" unusable\n"); |
|
3381 } |
|
3382 |
|
3383 return; |
|
3384 } |
|
3385 |
|
3386 /* Find what symmetric ciphers this slot supports. */ |
|
3387 static void pk11_find_symmetric_ciphers(CK_FUNCTION_LIST_PTR pflist, |
|
3388 CK_SLOT_ID current_slot, int *current_slot_n_cipher, int *local_cipher_nids) |
|
3389 { |
|
3390 int i; |
|
3391 |
|
3392 for (i = 0; i < PK11_CIPHER_MAX; ++i) |
|
3393 { |
|
3394 pk11_get_symmetric_cipher(pflist, current_slot, |
|
3395 current_slot_n_cipher, local_cipher_nids, &ciphers[i]); |
|
3396 } |
|
3397 } |
|
3398 |
|
3399 /* Find what digest algorithms this slot supports. */ |
|
3400 static void pk11_find_digests(CK_FUNCTION_LIST_PTR pflist, |
|
3401 CK_SLOT_ID current_slot, int *current_slot_n_digest, int *local_digest_nids) |
|
3402 { |
|
3403 int i; |
|
3404 |
|
3405 for (i = 0; i < PK11_DIGEST_MAX; ++i) |
|
3406 { |
|
3407 pk11_get_digest(pflist, current_slot, current_slot_n_digest, |
|
3408 local_digest_nids, &digests[i]); |
|
3409 } |
|
3410 } |
|
3411 |
|
3412 #ifdef SOLARIS_HW_SLOT_SELECTION |
|
3413 /* |
|
3414 * It would be great if we could use pkcs11_kernel directly since this library |
|
3415 * offers hardware slots only. That's the easiest way to achieve the situation |
|
3416 * where we use the hardware accelerators when present and OpenSSL native code |
|
3417 * otherwise. That presumes the fact that OpenSSL native code is faster than the |
|
3418 * code in the soft token. It's a logical assumption - Crypto Framework has some |
|
3419 * inherent overhead so going there for the software implementation of a |
|
3420 * mechanism should be logically slower in contrast to the OpenSSL native code, |
|
3421 * presuming that both implementations are of similar speed. For example, the |
|
3422 * soft token for AES is roughly three times slower than OpenSSL for 64 byte |
|
3423 * blocks and still 20% slower for 8KB blocks. So, if we want to ship products |
|
3424 * that use the PKCS#11 engine by default, we must somehow avoid that regression |
|
3425 * on machines without hardware acceleration. That's why switching to the |
|
3426 * pkcs11_kernel library seems like a very good idea. |
|
3427 * |
|
3428 * The problem is that OpenSSL built with SunStudio is roughly 2x slower for |
|
3429 * asymmetric operations (RSA/DSA/DH) than the soft token built with the same |
|
3430 * compiler. That means that if we switched to pkcs11_kernel from the libpkcs11 |
|
3431 * library, we would have had a performance regression on machines without |
|
3432 * hardware acceleration for asymmetric operations for all applications that use |
|
3433 * the PKCS#11 engine. There is one such application - Apache web server since |
|
3434 * it's shipped configured to use the PKCS#11 engine by default. Having said |
|
3435 * that, we can't switch to the pkcs11_kernel library now and have to come with |
|
3436 * a solution that, on non-accelerated machines, uses the OpenSSL native code |
|
3437 * for all symmetric ciphers and digests while it uses the soft token for |
|
3438 * asymmetric operations. |
|
3439 * |
|
3440 * This is the idea: dlopen() pkcs11_kernel directly and find out what |
|
3441 * mechanisms are there. We don't care about duplications (more slots can |
|
3442 * support the same mechanism), we just want to know what mechanisms can be |
|
3443 * possibly supported in hardware on that particular machine. As said before, |
|
3444 * pkcs11_kernel will show you hardware providers only. |
|
3445 * |
|
3446 * Then, we rely on the fact that since we use libpkcs11 library we will find |
|
3447 * the metaslot. When we go through the metaslot's mechanisms for symmetric |
|
3448 * ciphers and digests, we check that any found mechanism is in the table |
|
3449 * created using the pkcs11_kernel library. So, as a result we have two arrays |
|
3450 * of mechanisms that were advertised as supported in hardware which was the |
|
3451 * goal of that whole exercise. Thus, we can use libpkcs11 but avoid soft token |
|
3452 * code for symmetric ciphers and digests. See pk11_choose_slots() for more |
|
3453 * information. |
|
3454 * |
|
3455 * This is Solaris specific code, if SOLARIS_HW_SLOT_SELECTION is not defined |
|
3456 * the code won't be used. |
|
3457 */ |
|
3458 #if defined(__sparcv9) || defined(__x86_64) || defined(__amd64) |
|
3459 static const char pkcs11_kernel[] = "/usr/lib/security/64/pkcs11_kernel.so.1"; |
|
3460 #else |
|
3461 static const char pkcs11_kernel[] = "/usr/lib/security/pkcs11_kernel.so.1"; |
|
3462 #endif |
|
3463 |
|
3464 /* |
|
3465 * Check hardware capabilities of the machines. The output are two lists, |
|
3466 * hw_cnids and hw_dnids, that contain hardware mechanisms found in all hardware |
|
3467 * providers together. They are not sorted and may contain duplicate mechanisms. |
|
3468 */ |
|
3469 static int check_hw_mechanisms(void) |
|
3470 { |
|
3471 int i; |
|
3472 CK_RV rv; |
|
3473 void *handle; |
|
3474 CK_C_GetFunctionList p; |
|
3475 CK_TOKEN_INFO token_info; |
|
3476 CK_ULONG ulSlotCount = 0; |
|
3477 int n_cipher = 0, n_digest = 0; |
|
3478 CK_FUNCTION_LIST_PTR pflist = NULL; |
|
3479 CK_SLOT_ID_PTR pSlotList = NULL_PTR; |
|
3480 int *tmp_hw_cnids = NULL, *tmp_hw_dnids = NULL; |
|
3481 int hw_ctable_size, hw_dtable_size; |
|
3482 |
|
3483 DEBUG_SLOT_SEL("%s: SOLARIS_HW_SLOT_SELECTION code running\n", |
|
3484 PK11_DBG); |
|
3485 /* |
|
3486 * Use RTLD_GROUP to limit the pkcs11_kernel provider to its own |
|
3487 * symbols, which prevents it from mistakenly accessing C_* functions |
|
3488 * from the top-level PKCS#11 library. |
|
3489 */ |
|
3490 if ((handle = dlopen(pkcs11_kernel, RTLD_LAZY | RTLD_GROUP)) == NULL) |
|
3491 { |
|
3492 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_DSO_FAILURE); |
|
3493 goto err; |
|
3494 } |
|
3495 |
|
3496 if ((p = (CK_C_GetFunctionList)dlsym(handle, |
|
3497 PK11_GET_FUNCTION_LIST)) == NULL) |
|
3498 { |
|
3499 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_DSO_FAILURE); |
|
3500 goto err; |
|
3501 } |
|
3502 |
|
3503 /* get the full function list from the loaded library */ |
|
3504 if (p(&pflist) != CKR_OK) |
|
3505 { |
|
3506 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_DSO_FAILURE); |
|
3507 goto err; |
|
3508 } |
|
3509 |
|
3510 rv = pflist->C_Initialize(NULL_PTR); |
|
3511 if ((rv != CKR_OK) && (rv != CKR_CRYPTOKI_ALREADY_INITIALIZED)) |
|
3512 { |
|
3513 PK11err_add_data(PK11_F_CHECK_HW_MECHANISMS, |
|
3514 PK11_R_INITIALIZE, rv); |
|
3515 goto err; |
|
3516 } |
|
3517 |
|
3518 if (pflist->C_GetSlotList(0, NULL_PTR, &ulSlotCount) != CKR_OK) |
|
3519 { |
|
3520 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_GETSLOTLIST); |
|
3521 goto err; |
|
3522 } |
|
3523 |
|
3524 /* no slots, set the hw mechanism tables as empty */ |
|
3525 if (ulSlotCount == 0) |
|
3526 { |
|
3527 DEBUG_SLOT_SEL("%s: no hardware mechanisms found\n", PK11_DBG); |
|
3528 hw_cnids = OPENSSL_malloc(sizeof (int)); |
|
3529 hw_dnids = OPENSSL_malloc(sizeof (int)); |
|
3530 if (hw_cnids == NULL || hw_dnids == NULL) |
|
3531 { |
|
3532 PK11err(PK11_F_CHECK_HW_MECHANISMS, |
|
3533 PK11_R_MALLOC_FAILURE); |
|
3534 return (0); |
|
3535 } |
|
3536 /* this means empty tables */ |
|
3537 hw_cnids[0] = NID_undef; |
|
3538 hw_dnids[0] = NID_undef; |
|
3539 return (1); |
|
3540 } |
|
3541 |
|
3542 pSlotList = OPENSSL_malloc(ulSlotCount * sizeof (CK_SLOT_ID)); |
|
3543 if (pSlotList == NULL) |
|
3544 { |
|
3545 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_MALLOC_FAILURE); |
|
3546 goto err; |
|
3547 } |
|
3548 |
|
3549 /* Get the slot list for processing */ |
|
3550 if (pflist->C_GetSlotList(0, pSlotList, &ulSlotCount) != CKR_OK) |
|
3551 { |
|
3552 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_GETSLOTLIST); |
|
3553 goto err; |
|
3554 } |
|
3555 |
|
3556 /* |
|
3557 * We don't care about duplicate mechanisms in multiple slots and also |
|
3558 * reserve one slot for the terminal NID_undef which we use to stop the |
|
3559 * search. |
|
3560 */ |
|
3561 hw_ctable_size = ulSlotCount * PK11_CIPHER_MAX + 1; |
|
3562 hw_dtable_size = ulSlotCount * PK11_DIGEST_MAX + 1; |
|
3563 tmp_hw_cnids = OPENSSL_malloc(hw_ctable_size * sizeof (int)); |
|
3564 tmp_hw_dnids = OPENSSL_malloc(hw_dtable_size * sizeof (int)); |
|
3565 if (tmp_hw_cnids == NULL || tmp_hw_dnids == NULL) |
|
3566 { |
|
3567 PK11err(PK11_F_CHECK_HW_MECHANISMS, PK11_R_MALLOC_FAILURE); |
|
3568 goto err; |
|
3569 } |
|
3570 |
|
3571 /* |
|
3572 * Do not use memset since we should not rely on the fact that NID_undef |
|
3573 * is zero now. |
|
3574 */ |
|
3575 for (i = 0; i < hw_ctable_size; ++i) |
|
3576 tmp_hw_cnids[i] = NID_undef; |
|
3577 for (i = 0; i < hw_dtable_size; ++i) |
|
3578 tmp_hw_dnids[i] = NID_undef; |
|
3579 |
|
3580 DEBUG_SLOT_SEL("%s: provider: %s\n", PK11_DBG, pkcs11_kernel); |
|
3581 DEBUG_SLOT_SEL("%s: found %d hardware slots\n", PK11_DBG, ulSlotCount); |
|
3582 DEBUG_SLOT_SEL("%s: now looking for mechs supported in hw\n", |
|
3583 PK11_DBG); |
|
3584 |
|
3585 for (i = 0; i < ulSlotCount; i++) |
|
3586 { |
|
3587 if (pflist->C_GetTokenInfo(pSlotList[i], &token_info) != CKR_OK) |
|
3588 continue; |
|
3589 |
|
3590 DEBUG_SLOT_SEL("%s: token label: %.32s\n", PK11_DBG, |
|
3591 token_info.label); |
|
3592 |
|
3593 /* |
|
3594 * We are filling the hw mech tables here. Global tables are |
|
3595 * still NULL so all mechanisms are put into tmp tables. |
|
3596 */ |
|
3597 pk11_find_symmetric_ciphers(pflist, pSlotList[i], |
|
3598 &n_cipher, tmp_hw_cnids); |
|
3599 pk11_find_digests(pflist, pSlotList[i], |
|
3600 &n_digest, tmp_hw_dnids); |
|
3601 } |
|
3602 |
|
3603 /* |
|
3604 * Since we are part of a library (libcrypto.so), calling this function |
|
3605 * may have side-effects. Also, C_Finalize() is triggered by |
|
3606 * dlclose(3C). |
|
3607 */ |
|
3608 #if 0 |
|
3609 pflist->C_Finalize(NULL); |
|
3610 #endif |
|
3611 OPENSSL_free(pSlotList); |
|
3612 (void) dlclose(handle); |
|
3613 hw_cnids = tmp_hw_cnids; |
|
3614 hw_dnids = tmp_hw_dnids; |
|
3615 |
|
3616 DEBUG_SLOT_SEL("%s: hw mechs check complete\n", PK11_DBG); |
|
3617 return (1); |
|
3618 |
|
3619 err: |
|
3620 if (pSlotList != NULL) |
|
3621 OPENSSL_free(pSlotList); |
|
3622 if (tmp_hw_cnids != NULL) |
|
3623 OPENSSL_free(tmp_hw_cnids); |
|
3624 if (tmp_hw_dnids != NULL) |
|
3625 OPENSSL_free(tmp_hw_dnids); |
|
3626 |
|
3627 return (0); |
|
3628 } |
|
3629 |
|
3630 /* |
|
3631 * Check presence of a NID in the table of NIDs unless the mechanism is |
|
3632 * supported directly in a CPU instruction set. The table may be NULL (i.e., |
|
3633 * non-existent). |
|
3634 */ |
|
3635 static int nid_in_table(int nid, int *nid_table) |
|
3636 { |
|
3637 int i = 0; |
|
3638 |
|
3639 /* |
|
3640 * Special case first. NULL means that we are initializing a new table. |
|
3641 */ |
|
3642 if (nid_table == NULL) |
|
3643 return (1); |
|
3644 |
|
3645 #if defined(__x86) |
|
3646 /* |
|
3647 * On Intel, if we have AES-NI instruction set we route AES to the |
|
3648 * Crypto Framework. Intel CPUs do not have other instruction sets for |
|
3649 * HW crypto acceleration so we check the HW NID table for any other |
|
3650 * mechanism. |
|
3651 */ |
|
3652 if (hw_aes_instruction_set_present() == 1) |
|
3653 { |
|
3654 switch (nid) |
|
3655 { |
|
3656 case NID_aes_128_ecb: |
|
3657 case NID_aes_192_ecb: |
|
3658 case NID_aes_256_ecb: |
|
3659 case NID_aes_128_cbc: |
|
3660 case NID_aes_192_cbc: |
|
3661 case NID_aes_256_cbc: |
|
3662 case NID_aes_128_ctr: |
|
3663 case NID_aes_192_ctr: |
|
3664 case NID_aes_256_ctr: |
|
3665 return (1); |
|
3666 } |
|
3667 } |
|
3668 #elif defined(__sparc) |
|
3669 if (hw_aes_instruction_set_present() == 1) |
|
3670 return (1); |
|
3671 #endif |
|
3672 |
|
3673 /* The table is never full, there is always at least one NID_undef. */ |
|
3674 while (nid_table[i] != NID_undef) |
|
3675 { |
|
3676 if (nid_table[i++] == nid) |
|
3677 { |
|
3678 DEBUG_SLOT_SEL(" (NID %d in hw table, idx %d)", nid, i); |
|
3679 return (1); |
|
3680 } |
|
3681 } |
|
3682 |
|
3683 return (0); |
|
3684 } |
|
3685 |
|
3686 /* Do we have an AES instruction set? */ |
|
3687 static int |
|
3688 hw_aes_instruction_set_present(void) |
|
3689 { |
|
3690 static int present = -1; |
|
3691 |
|
3692 if (present == -1) |
|
3693 { |
|
3694 uint_t ui = 0; |
|
3695 |
|
3696 (void) getisax(&ui, 1); |
|
3697 |
|
3698 #if defined(__amd64) || defined(__i386) |
|
3699 present = (ui & (AV_386_AES)) > 0; |
|
3700 #elif defined(__sparc) |
|
3701 present = (ui & (AV_SPARC_AES|AV_SPARC_FJAES)) > 0; |
|
3702 #endif |
|
3703 } |
|
3704 |
|
3705 return (present); |
|
3706 } |
|
3707 |
|
3708 #endif /* SOLARIS_HW_SLOT_SELECTION */ |
|
3709 |
|
3710 #endif /* OPENSSL_NO_HW_PK11 */ |
|
3711 #endif /* OPENSSL_NO_HW */ |
|