2 <b><big>Licensing of the SILC Software</big></b>
4 The SILC is distributed currently as three different distributions; SILC
5 Client, SILC Server and SILC Toolkit. Each of the distributions may have
6 different licenses and different licensing policy. Currently the licenses
7 of these different distributions are as follows:
9 - SILC Client: <a href="#gpl" class="normal">GNU General Public License</a><br />
10 - SILC Server: <a href="#gpl" class="normal">GNU General Public License</a><br />
11 - SILC Toolkit: <a href="#gpl" class="normal">GNU General Public License</a>
13 If you have special licensing requirements, such as you are going to
14 distribute one of the SILC distributions as commercial product, or you
15 need to include one of the SILC distributions (such as SILC Toolkit) into
16 your commercial product, or you need to use some parts of the SILC
17 distributions (such as SILC Toolkit) within your commercial product,
18 it is suggested that you would contact us to discuss the licensing policy
19 and other possible licensing methods for the SILC distributions. Contact
20 us at <a href="mailto:info at silcnet.org"
21 class="normal">info@silcnet.org</a>.
23 Note that these licenses apply only to the SILC software. The actual SILC
24 protocol specification is open specification and is freely available from
25 this site and from the <a href="http://www.ietf.org"
26 class="normal">IETF</a>.
28 <br /> <br /> <br /> <br />
30 <b><big>GNU GENERAL PUBLIC LICENSE<br />
31 Version 2, June 1991</big></b>
33 Copyright (C) 1989, 1991 Free Software Foundation, Inc.<br />
34 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
36 Everyone is permitted to copy and distribute verbatim copies<br />
37 of this license document, but changing it is not allowed.
41 The licenses for most software are designed to take away your
42 freedom to share and change it. By contrast, the GNU General Public
43 License is intended to guarantee your freedom to share and change free
44 software--to make sure the software is free for all its users. This
45 General Public License applies to most of the Free Software
46 Foundation's software and to any other program whose authors commit to
47 using it. (Some other Free Software Foundation software is covered by
48 the GNU Library General Public License instead.) You can apply it to
51 When we speak of free software, we are referring to freedom, not
52 price. Our General Public Licenses are designed to make sure that you
53 have the freedom to distribute copies of free software (and charge for
54 this service if you wish), that you receive source code or can get it
55 if you want it, that you can change the software or use pieces of it
56 in new free programs; and that you know you can do these things.
58 To protect your rights, we need to make restrictions that forbid
59 anyone to deny you these rights or to ask you to surrender the rights.
60 These restrictions translate to certain responsibilities for you if you
61 distribute copies of the software, or if you modify it.
63 For example, if you distribute copies of such a program, whether
64 gratis or for a fee, you must give the recipients all the rights that
65 you have. You must make sure that they, too, receive or can get the
66 source code. And you must show them these terms so they know their
69 We protect your rights with two steps: (1) copyright the software, and
70 (2) offer you this license which gives you legal permission to copy,
71 distribute and/or modify the software.
73 Also, for each author's protection and ours, we want to make certain
74 that everyone understands that there is no warranty for this free
75 software. If the software is modified by someone else and passed on, we
76 want its recipients to know that what they have is not the original, so
77 that any problems introduced by others will not reflect on the original
80 Finally, any free program is threatened constantly by software
81 patents. We wish to avoid the danger that redistributors of a free
82 program will individually obtain patent licenses, in effect making the
83 program proprietary. To prevent this, we have made it clear that any
84 patent must be licensed for everyone's free use or not licensed at all.
86 The precise terms and conditions for copying, distribution and
89 <b>TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION</b>
92 This License applies to any program or other work which contains
93 a notice placed by the copyright holder saying it may be distributed
94 under the terms of this General Public License. The "Program", below,
95 refers to any such program or work, and a "work based on the Program"
96 means either the Program or any derivative work under copyright law:
97 that is to say, a work containing the Program or a portion of it,
98 either verbatim or with modifications and/or translated into another
99 language. (Hereinafter, translation is included without limitation in
100 the term "modification".) Each licensee is addressed as "you".
102 Activities other than copying, distribution and modification are not
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104 running the Program is not restricted, and the output from the Program
105 is covered only if its contents constitute a work based on the
106 Program (independent of having been made by running the Program).
107 Whether that is true depends on what the Program does.
110 You may copy and distribute verbatim copies of the Program's
111 source code as you receive it, in any medium, provided that you
112 conspicuously and appropriately publish on each copy an appropriate
113 copyright notice and disclaimer of warranty; keep intact all the
114 notices that refer to this License and to the absence of any warranty;
115 and give any other recipients of the Program a copy of this License
116 along with the Program.
118 You may charge a fee for the physical act of transferring a copy, and
119 you may at your option offer warranty protection in exchange for a fee.
122 You may modify your copy or copies of the Program or any portion
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133 whole or in part contains or is derived from the Program or any
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149 These requirements apply to the modified work as a whole. If
150 identifiable sections of that work are not derived from the Program,
151 and can be reasonably considered independent and separate works in
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153 sections when you distribute them as separate works. But when you
154 distribute the same sections as part of a whole which is a work based
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157 entire whole, and thus to each and every part regardless of who wrote it.
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170 You may copy and distribute the Program (or a work based on it,
171 under Section 2) in object code or executable form under the terms of
172 Sections 1 and 2 above provided that you also do one of the following:
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212 You may not copy, modify, sublicense, or distribute the Program
213 except as expressly provided under this License. Any attempt
214 otherwise to copy, modify, sublicense or distribute the Program is
215 void, and will automatically terminate your rights under this License.
216 However, parties who have received copies, or rights, from you under
217 this License will not have their licenses terminated so long as such
218 parties remain in full compliance.
221 You are not required to accept this License, since you have not
222 signed it. However, nothing else grants you permission to modify or
223 distribute the Program or its derivative works. These actions are
224 prohibited by law if you do not accept this License. Therefore, by
225 modifying or distributing the Program (or any work based on the
226 Program), you indicate your acceptance of this License to do so, and
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228 the Program or works based on it.
231 Each time you redistribute the Program (or any work based on the
232 Program), the recipient automatically receives a license from the
233 original licensor to copy, distribute or modify the Program subject to
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240 If, as a consequence of a court judgment or allegation of patent
241 infringement or for any other reason (not limited to patent issues),
242 conditions are imposed on you (whether by court order, agreement or
243 otherwise) that contradict the conditions of this License, they do not
244 excuse you from the conditions of this License. If you cannot
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246 License and any other pertinent obligations, then as a consequence you
247 may not distribute the Program at all. For example, if a patent
248 license would not permit royalty-free redistribution of the Program by
249 all those who receive copies directly or indirectly through you, then
250 the only way you could satisfy both it and this License would be to
251 refrain entirely from distribution of the Program.
253 If any portion of this section is held invalid or unenforceable under
254 any particular circumstance, the balance of the section is intended to
255 apply and the section as a whole is intended to apply in other
258 It is not the purpose of this section to induce you to infringe any
259 patents or other property right claims or to contest validity of any
260 such claims; this section has the sole purpose of protecting the
261 integrity of the free software distribution system, which is
262 implemented by public license practices. Many people have made
263 generous contributions to the wide range of software distributed
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266 to distribute software through any other system and a licensee cannot
269 This section is intended to make thoroughly clear what is believed to
270 be a consequence of the rest of this License.
273 If the distribution and/or use of the Program is restricted in
274 certain countries either by patents or by copyrighted interfaces, the
275 original copyright holder who places the Program under this License
276 may add an explicit geographical distribution limitation excluding
277 those countries, so that distribution is permitted only in or among
278 countries not thus excluded. In such case, this License incorporates
279 the limitation as if written in the body of this License.
282 The Free Software Foundation may publish revised and/or new versions
283 of the General Public License from time to time. Such new versions will
284 be similar in spirit to the present version, but may differ in detail to
285 address new problems or concerns.
287 Each version is given a distinguishing version number. If the Program
288 specifies a version number of this License which applies to it and "any
289 later version", you have the option of following the terms and conditions
290 either of that version or of any later version published by the Free
291 Software Foundation. If the Program does not specify a version number of
292 this License, you may choose any version ever published by the Free Software
296 If you wish to incorporate parts of the Program into other free
297 programs whose distribution conditions are different, write to the author
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299 Software Foundation, write to the Free Software Foundation; we sometimes
300 make exceptions for this. Our decision will be guided by the two goals
301 of preserving the free status of all derivatives of our free software and
302 of promoting the sharing and reuse of software generally.
307 BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
308 FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
309 OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
310 PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
311 OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
312 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS
313 TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE
314 PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
315 REPAIR OR CORRECTION.
318 IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
319 WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
320 REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
321 INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
322 OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
323 TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
324 YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
325 PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
326 POSSIBILITY OF SUCH DAMAGES.
328 <b>END OF TERMS AND CONDITIONS</b>
projects / silc.git / blob