Copyright (C) 2002 Dan Egnor

Copyright (C) 2015 Amos Jeffries, 

Copyright (C) 1998, 2001 Ray Dassen

Copyright (C) 2006, 2007 NTT

Copyright (C) 2014 Exegin Technologies Limited

Copyright (C) 2014 Owen Kirby

Copyright (C) 2013, 2014 Joachim Strömbergson

Copyright (C) 2005, 2009 Magnus Holmgren

Copyright (C) 1992 Dana L. How

Copyright (C) 2002, 2009, 2014 Magnus Holmgren

Copyright (C) 2006, 2012 Jeronimo Pellegrini,  Niels Möller

Copyright (C) 2011 Katholieke Universiteit Leuven

Copyright (C) 2003 Andreas Sigfridsson

Copyright (C) 2003 Marcus Comstedt

Copyright (C) 2011 Daniel Kahn Gillmor

Copyright (C) 2003, 2013 Nikos Mavrogiannopoulos

Copyright (C) 1991-2014 Free Software Foundation, Inc.

Copyright (C) 2011 Andres Mejia

Copyright (C) 2001, 2012, 2013 Nikos Mavrogiannopoulos

Copyright (C) 2004, 2010, 2011, 2012  Simon Josefsson

Copyright (C) 1998 Ross Anderson, Eli Biham, Lars Knudsen.

Copyright (C) 2001, 2004 Peter Gutmann, Andrew Kuchling, Niels Möller

Copyright (C) 2014 Exegin Technologies Limited

Copyright (C) 2005, 2009 Magnus Holmgren

Copyright (C) 1999 Ruud de Rooij <[email protected]>

Copyright (C) 1999 J.H.M. Dassen (Ray) <[email protected]>

Copyright (C) 2013, 2015 Red Hat, Inc.

Copyright (C) 2000-2002, 2005, Rafael R. Sevilla, Niels Möller

Copyright (C) 2001-2015, Niels Möller

       GNU Nettle is free software: you can redistribute it and/or

       modify it under the terms of either:

         * the GNU Lesser General Public License as published by

           the Free Software Foundation; either version 3 of the

           License, or (at your option) any later version.

       or

         * the GNU General Public License as published by the Free

           Software Foundation; either version 2 of the License,

           or (at your option) any later version.

       or both in parallel, as here.

       GNU Nettle is distributed in the hope that it will be useful,

       but WITHOUT ANY WARRANTY; without even the implied warranty

       of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See

       the GNU General Public License for more details.

       You should have received copies of the GNU General Public

       License and the GNU Lesser General Public License along with

       this program.  If not, see http://www.gnu.org/licenses/.

-----

GNU GENERAL PUBLIC LICENSE

Version 2, June 1991

Copyright (C) 1989, 1991 Free Software Foundation, Inc.  

51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA

Everyone is permitted to copy and distribute verbatim copies

of this license document, but changing it is not allowed.

Preamble

The licenses for most software are designed to take away your

freedom to share and change it. By contrast, the GNU General

Public License is intended to guarantee your freedom to share and

change free software--to make sure the software is free for all

its users. This General Public License applies to most of the Free

Software Foundation's software and to any other program whose

authors commit to using it. (Some other Free Software Foundation

software is covered by the GNU Lesser General Public License

instead.) You can apply it to your programs, too.

When we speak of free software, we are referring to freedom, not

price. Our General Public Licenses are designed to make sure that

you have the freedom to distribute copies of free software (and

charge for this service if you wish), that you receive source code

or can get it if you want it, that you can change the software or

use pieces of it in new free programs; and that you know you can

do these things.

To protect your rights, we need to make restrictions that forbid

anyone to deny you these rights or to ask you to surrender the

rights. These restrictions translate to certain responsibilities

for you if you distribute copies of the software, or if you modify

it.

For example, if you distribute copies of such a program, whether

gratis or for a fee, you must give the recipients all the rights

that you have. You must make sure that they, too, receive or can

get the source code. And you must show them these terms so they

know their rights.

We protect your rights with two steps: (1) copyright the software,

and (2) offer you this license which gives you legal permission to

copy, distribute and/or modify the software.

Also, for each author's protection and ours, we want to make

certain that everyone understands that there is no warranty for

this free software. If the software is modified by someone else

and passed on, we want its recipients to know that what they have

is not the original, so that any problems introduced by others

will not reflect on the original authors' reputations.

Finally, any free program is threatened constantly by software

patents. We wish to avoid the danger that redistributors of a free

program will individually obtain patent licenses, in effect making

the program proprietary. To prevent this, we have made it clear

that any patent must be licensed for everyone's free use or not

licensed at all.

The precise terms and conditions for copying, distribution and

modification follow.

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. This License applies to any program or other work which

contains a notice placed by the copyright holder saying it may be

distributed under the terms of this General Public License. The

"Program", below, refers to any such program or work, and a "work

based on the Program" means either the Program or any derivative

work under copyright law: that is to say, a work containing the

Program or a portion of it, either verbatim or with modifications

and/or translated into another language. (Hereinafter, translation

is included without limitation in the term "modification".) Each

licensee is addressed as "you".

Activities other than copying, distribution and modification are

not covered by this License; they are outside its scope. The act

of running the Program is not restricted, and the output from the

Program is covered only if its contents constitute a work based on

the Program (independent of having been made by running the

Program). Whether that is true depends on what the Program does.

1. You may copy and distribute verbatim copies of the Program's

source code as you receive it, in any medium, provided that you

conspicuously and appropriately publish on each copy an

appropriate copyright notice and disclaimer of warranty; keep

intact all the notices that refer to this License and to the

absence of any warranty; and give any other recipients of the

Program a copy of this License along with the Program.

You may charge a fee for the physical act of transferring a copy,

and you may at your option offer warranty protection in exchange

for a fee.

2. You may modify your copy or copies of the Program or any

portion of it, thus forming a work based on the Program, and copy

and distribute such modifications or work under the terms of

Section 1 above, provided that you also meet all of these

conditions:

a) You must cause the modified files to carry prominent notices

stating that you changed the files and the date of any change.

b) You must cause any work that you distribute or publish, that in

whole or in part contains or is derived from the Program or any

part thereof, to be licensed as a whole at no charge to all third

parties under the terms of this License.

c) If the modified program normally reads commands interactively

when run, you must cause it, when started running for such

interactive use in the most ordinary way, to print or display an

announcement including an appropriate copyright notice and a

notice that there is no warranty (or else, saying that you provide

a warranty) and that users may redistribute the program under these

conditions, and telling the user how to view a copy of this License.

(Exception: if the Program itself is interactive but does not

normally print such an announcement, your work based on the

Program is not required to print an announcement.)

These requirements apply to the modified work as a whole. If

identifiable sections of that work are not derived from the

Program, and can be reasonably considered independent and separate

works in themselves, then this License, and its terms, do not

apply to those sections when you distribute them as separate

works. But when you distribute the same sections as part of a

whole which is a work based on the Program, the distribution of

the whole must be on the terms of this License, whose permissions

for other licensees extend to the entire whole, and thus to each

and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or

contest your rights to work written entirely by you; rather, the

intent is to exercise the right to control the distribution of

derivative or collective works based on the Program.

In addition, mere aggregation of another work not based on the

Program with the Program (or with a work based on the Program) on

a volume of a storage or distribution medium does not bring the

other work under the scope of this License.

3. You may copy and distribute the Program (or a work based on it,

under Section 2) in object code or executable form under the terms

of Sections 1 and 2 above provided that you also do one of the

following:

a) Accompany it with the complete corresponding machine-readable

source code, which must be distributed under the terms of Sections

1 and 2 above on a medium customarily used for software

interchange; or,

b) Accompany it with a written offer, valid for at least three

years, to give any third party, for a charge no more than your

cost of physically performing source distribution, a complete

machine-readable copy of the corresponding source code, to be

distributed under the terms of Sections 1 and 2 above on a medium

customarily used for software interchange; or,

c) Accompany it with the information you received as to the offer

to distribute corresponding source code. (This alternative is

allowed only for noncommercial distribution and only if you

received the program in object code or executable form with such

an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work

for making modifications to it. For an executable work, complete

source code means all the source code for all modules it contains,

plus any associated interface definition files, plus the scripts

used to control compilation and installation of the executable.

However, as a special exception, the source code distributed need

not include anything that is normally distributed (in either

source or binary form) with the major components (compiler,

kernel, and so on) of the operating system on which the executable

runs, unless that component itself accompanies the executable.

If distribution of executable or object code is made by offering

access to copy from a designated place, then offering equivalent

access to copy the source code from the same place counts as

distribution of the source code, even though third parties are not

compelled to copy the source along with the object code.

4. You may not copy, modify, sublicense, or distribute the Program

except as expressly provided under this License. Any attempt

otherwise to copy, modify, sublicense or distribute the Program is

void, and will automatically terminate your rights under this

License. However, parties who have received copies, or rights,

from you under this License will not have their licenses

terminated so long as such parties remain in full compliance.

5. You are not required to accept this License, since you have not

signed it. However, nothing else grants you permission to modify

or distribute the Program or its derivative works. These actions

are prohibited by law if you do not accept this License.

Therefore, by modifying or distributing the Program (or any work

based on the Program), you indicate your acceptance of this

License to do so, and all its terms and conditions for copying,

distributing or modifying the Program or works based on it.

6. Each time you redistribute the Program (or any work based on

the Program), the recipient automatically receives a license from

the original licensor to copy, distribute or modify the Program

subject to these terms and conditions. You may not impose any

further restrictions on the recipients' exercise of the rights

granted herein. You are not responsible for enforcing compliance

by third parties to this License.

7. If, as a consequence of a court judgment or allegation of

patent infringement or for any other reason (not limited to patent

issues), conditions are imposed on you (whether by court order,

agreement or otherwise) that contradict the conditions of this

License, they do not excuse you from the conditions of this

License. If you cannot distribute so as to satisfy simultaneously

your obligations under this License and any other pertinent

obligations, then as a consequence you may not distribute the

Program at all. For example, if a patent license would not permit

royalty-free redistribution of the Program by all those who

receive copies directly or indirectly through you, then the only

way you could satisfy both it and this License would be to refrain

entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable

under any particular circumstance, the balance of the section is

intended to apply and the section as a whole is intended to apply

in other circumstances.

It is not the purpose of this section to induce you to infringe

any patents or other property right claims or to contest validity

of any such claims; this section has the sole purpose of

protecting the integrity of the free software distribution system,

which is implemented by public license practices. Many people have

made generous contributions to the wide range of software

distributed through that system in reliance on consistent

application of that system; it is up to the author/donor to decide

if he or she is willing to distribute software through any other

system and a licensee cannot impose that choice.

This section is intended to make thoroughly clear what is believed

to be a consequence of the rest of this License.

8. If the distribution and/or use of the Program is restricted in

certain countries either by patents or by copyrighted interfaces,

the original copyright holder who places the Program under this

License may add an explicit geographical distribution limitation

excluding those countries, so that distribution is permitted only

in or among countries not thus excluded. In such case, this

License incorporates the limitation as if written in the body of

this License.

9. The Free Software Foundation may publish revised and/or new

versions of the General Public License from time to time. Such new

versions will be similar in spirit to the present version, but may

differ in detail to address new problems or concerns.

Each version is given a distinguishing version number. If the

Program specifies a version number of this License which applies

to it and "any later version", you have the option of following

the terms and conditions either of that version or of any later

version published by the Free Software Foundation. If the Program

does not specify a version number of this License, you may choose

any version ever published by the Free Software Foundation.

10. If you wish to incorporate parts of the Program into other

free programs whose distribution conditions are different, write

to the author to ask for permission. For software which is

copyrighted by the Free Software Foundation, write to the Free

Software Foundation; we sometimes make exceptions for this. Our

decision will be guided by the two goals of preserving the free

status of all derivatives of our free software and of promoting

the sharing and reuse of software generally.

NO WARRANTY

11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO

WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE

LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS

AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY

OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT

LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND

PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE

DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR

OR CORRECTION.

12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN

WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY

MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE

LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL,

INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR

INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF

DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU

OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY

OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN

ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

END OF TERMS AND CONDITIONS

How to Apply These Terms to Your New Programs

If you develop a new program, and you want it to be of the

greatest possible use to the public, the best way to achieve this

is to make it free software which everyone can redistribute and

change under these terms.

To do so, attach the following notices to the program. It is

safest to attach them to the start of each source file to most

effectively convey the exclusion of warranty; and each file should

have at least the "copyright" line and a pointer to where the full

notice is found.

one line to give the program's name and an idea of what it does.

Copyright (C) yyyy  name of author

This program is free software; you can redistribute it and/or

modify it under the terms of the GNU General Public License

as published by the Free Software Foundation; either version 2

of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA.

Also add information on how to contact you by electronic and paper

mail.

If the program is interactive, make it output a short notice like

this when it starts in an interactive mode:

Gnomovision version 69, Copyright (C) year name of author

Gnomovision comes with ABSOLUTELY NO WARRANTY; for details

type `show w'.  This is free software, and you are welcome

to redistribute it under certain conditions; type `show c' 

for details.

The hypothetical commands `show w' and `show c' should show the

appropriate parts of the General Public License. Of course, the

commands you use may be called something other than `show w' and

`show c'; they could even be mouse-clicks or menu items--whatever

suits your program.

You should also get your employer (if you work as a programmer) or

your school, if any, to sign a "copyright disclaimer" for the

program, if necessary. Here is a sample; alter the names:

Yoyodyne, Inc., hereby disclaims all copyright

interest in the program `Gnomovision'

(which makes passes at compilers) written 

by James Hacker.

signature of Ty Coon, 1 April 1989

Ty Coon, President of Vice

This General Public License does not permit incorporating your

program into proprietary programs. If your program is a subroutine

library, you may consider it more useful to permit linking

proprietary applications with the library. If this is what you

want to do, use the GNU Lesser General Public License instead of

this License.

-----

GNU LESSER GENERAL PUBLIC LICENSE

Version 3, 29 June 2007

Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>

Everyone is permitted to copy and distribute verbatim copies of

this license document, but changing it is not allowed.

This version of the GNU Lesser General Public License incorporates

the terms and conditions of version 3 of the GNU General Public

License, supplemented by the additional permissions listed below.

0. Additional Definitions.

As used herein, "this License" refers to version 3 of the GNU

Lesser General Public License, and the "GNU GPL" refers to

version 3 of the GNU General Public License.

"The Library" refers to a covered work governed by this License,

other than an Application or a Combined Work as defined below.

An "Application" is any work that makes use of an interface

provided by the Library, but which is not otherwise based on the

Library. Defining a subclass of a class defined by the Library is

deemed a mode of using an interface provided by the Library.

A "Combined Work" is a work produced by combining or linking an

 Application with the Library. The particular version of the

 Library with which the Combined Work was made is also called the

 "Linked Version".

The "Minimal Corresponding Source" for a Combined Work means the

Corresponding Source for the Combined Work, excluding any source

code for portions of the Combined Work that, considered in

isolation, are based on the Application, and not on the Linked

Version.

The "Corresponding Application Code" for a Combined Work means the

object code and/or source code for the Application, including any

data and utility programs needed for reproducing the Combined Work

from the Application, but excluding the System Libraries of the

Combined Work.

1. Exception to Section 3 of the GNU GPL.

You may convey a covered work under sections 3 and 4 of this

License without being bound by section 3 of the GNU GPL.

2. Conveying Modified Versions.

If you modify a copy of the Library, and, in your modifications, a

facility refers to a function or data to be supplied by an

Application that uses the facility (other than as an argument

passed when the facility is invoked), then you may convey a copy

of the modified version:

a) under this License, provided that you make a good faith effort

 to ensure that, in the event an Application does not supply the

 function or data, the facility still operates, and performs

 whatever part of its purpose remains meaningful, or

b) under the GNU GPL, with none of the additional permissions of

 this License applicable to that copy.

3. Object Code Incorporating Material from Library Header Files.

The object code form of an Application may incorporate material

from a header file that is part of the Library. You may convey

such object code under terms of your choice, provided that, if the

incorporated material is not limited to numerical parameters, data

structure layouts and accessors, or small macros, inline functions

and templates (ten or fewer lines in length), you do both of the

following:

a) Give prominent notice with each copy of the object code that

 the Library is used in it and that the Library and its use are

 covered by this License.

b) Accompany the object code with a copy of the GNU GPL and this

 license document.

4. Combined Works.

You may convey a Combined Work under terms of your choice that,

taken together, effectively do not restrict modification of the

portions of the Library contained in the Combined Work and reverse

engineering for debugging such modifications, if you also do each

of the following:

a) Give prominent notice with each copy of the Combined Work that

 the Library is used in it and that the Library and its use are

 covered by this License.

b) Accompany the Combined Work with a copy of the GNU GPL and this

 license document.

c) For a Combined Work that displays copyright notices during

 execution, include the copyright notice for the Library among

 these notices, as well as a reference directing the user to the

 copies of the GNU GPL and this license document.

d) Do one of the following:

0) Convey the Minimal Corresponding Source under the terms of this

 License, and the Corresponding Application Code in a form

 suitable for, and under terms that permit, the user to recombine

 or relink the Application with a modified version of the Linked

 Version to produce a modified Combined Work, in the manner

 specified by section 6 of the GNU GPL for conveying Corresponding

 Source.

1) Use a suitable shared library mechanism for linking with the

 Library. A suitable mechanism is one that (a) uses at run time a

 copy of the Library already present on the user's computer

 system, and (b) will operate properly with a modified version of