/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */

/*

 * Copyright (C) 1998 by the FundsXpress, INC.

 *

 * All rights reserved.

 *

 * Export of this software from the United States of America may require

 * a specific license from the United States Government.  It is the

 * responsibility of any person or organization contemplating export to

 * obtain such a license before exporting.

 *

 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and

 * distribute this software and its documentation for any purpose and

 * without fee is hereby granted, provided that the above copyright

 * notice appear in all copies and that both that copyright notice and

 * this permission notice appear in supporting documentation, and that

 * the name of FundsXpress. not be used in advertising or publicity pertaining

 * to distribution of the software without specific, written prior

 * permission.  FundsXpress makes no representations about the suitability of

 * this software for any purpose.  It is provided "as is" without express

 * or implied warranty.

 *

 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED

 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.

 */

/*

 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.

 */

#include "crypto_int.h"

#include <md4.h>

static krb5_error_code

k5_md4_hash(const krb5_crypto_iov *data, size_t num_data, krb5_data *output)

{

    MD4_CTX md4ctx;

    size_t i;

    if (output->length != MD4_DIGEST_LENGTH)

        return KRB5_CRYPTO_INTERNAL;

    MD4Init(&md4ctx);

    for (i = 0; i < num_data; i++) {

        const krb5_data *d = &data[i].data;

        if (SIGN_IOV(&data[i]))

            MD4Update(&md4ctx, d->data, (size_t)d->length);

    }

    MD4Final(output->data, &md4ctx);

    return 0;

}

const struct krb5_hash_provider krb5int_hash_md4 = {

    "MD4",

    MD4_DIGEST_LENGTH,

    MD4_HMAC_BLOCK_SIZE,

    k5_md4_hash

};