diff options
| -rw-r--r-- | COPYRIGHT | 69 | ||||
| -rw-r--r-- | LEGAL/copy/00INDEX | 1 | ||||
| -rw-r--r-- | LEGAL/copy/README | 29 |
3 files changed, 69 insertions, 30 deletions
diff --git a/COPYRIGHT b/COPYRIGHT new file mode 100644 index 0000000..5ea30be --- /dev/null +++ b/COPYRIGHT @@ -0,0 +1,69 @@ +Copyright and licensing of the Python Cryptography Toolkit ("PyCrypto"): +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Previously, the copyright and/or licensing status of the Python +Cryptography Toolkit ("PyCrypto") had been somewhat ambiguous. The +original intention of Andrew M. Kuchling and other contributors has +been to dedicate PyCrypto to the public domain, but that intention was +not necessarily made clear in the original disclaimer (see +LEGAL/copy/LICENSE.orig). + +Additionally, some files within PyCrypto had specified their own +licenses that differed from the PyCrypto license itself. For example, +the original RIPEMD.c module simply had a copyright statement and +warranty disclaimer, without clearly specifying any license terms. +(An updated version on the author's website came with a license that +contained a GPL-incompatible advertising clause.) + +To rectify this situation for PyCrypto 2.1, the following steps have +been taken: + + 1. Obtaining explicit permission from the original contributors to + dedicate their contributions to the public domain if they have not + already done so. (See the "LEGAL/copy/stmts" directory for + contributors' statements.) + + 2. Replacing some modules with clearly-licensed code from other + sources (e.g. the DES and DES3 modules were replaced with new ones + based on Tom St. Denis's public-domain LibTomCrypt library.) + + 3. Replacing some modules with code written from scratch (e.g. the + RIPEMD and Blowfish modules were re-implemented from their + respective algorithm specifications without reference to the old + implementations). + + 4. Removing some modules altogether without replacing them. + +To the best of our knowledge, with the exceptions noted below or +within the files themselves, the files that constitute PyCrypto are in +the public domain. Most are distributed with the following notice: + + The contents of this file are dedicated to the public domain. To + the extent that dedication to the public domain is not available, + everyone is granted a worldwide, perpetual, royalty-free, + non-exclusive license to exercise all rights associated with the + contents of this file for any purpose whatsoever. + No rights are reserved. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + SOFTWARE. + +Exception: + + - Portions of HMAC.py and setup.py are derived from Python 2.2, and + are therefore Copyright (c) 2001, 2002, 2003 Python Software + Foundation (All Rights Reserved). They are licensed by the PSF + under the terms of the Python 2.2 license. (See the file + LEGAL/copy/LICENSE.python-2.2 for details.) + +EXPORT RESTRICTIONS: + +Note that the export or re-export of cryptographic software and/or +source code may be subject to regulation in your jurisdiction. + diff --git a/LEGAL/copy/00INDEX b/LEGAL/copy/00INDEX index ee7c0a8..fbdca18 100644 --- a/LEGAL/copy/00INDEX +++ b/LEGAL/copy/00INDEX @@ -1,5 +1,4 @@ 00INDEX This file -README Information about the files in this directory. LICENSE.orig Original (deprecated) license for the Python Cryptography Toolkit LICENSE.libtom LICENSE file from LibTomCrypt stmts/ Statements by contributors diff --git a/LEGAL/copy/README b/LEGAL/copy/README deleted file mode 100644 index f794720..0000000 --- a/LEGAL/copy/README +++ /dev/null @@ -1,29 +0,0 @@ -Historically, the copyright licensing status of the Python Cryptography -Toolkit ("PyCrypto") has been somewhat ambiguous. The original intention of -Andrew M. Kuchling and other contributors has been to dedicate PyCrypto to the -public domain, but the original license may not have allowed distributing -modified versions, depending on one's interpretation of the word "use" (see -LICENSE.orig). - -Additionally, some files within PyCrypto have specified their own licenses, -which differed from the PyCrypto license itself. For example, the original -RIPEMD.c module simply had a copyright statement and warranty disclaimer, -without clearly licensing anything. - -Recently, there has been an effort to clarify the situation. A multi-faceted -approach has been taken with regard to ambiguously or incompatibly licensed -code, including: - -- Asking contributors to clarify their original intentions or to clearly and - explicitly dedicate their contributions to the public domain; - -- Writing new code from scratch as a replacement; - -- Using clearly-licensed code from other sources; and - -- Removing the code without replacing it. - -Where contributors have responded to a request to clarify their intentions, -their statements have been recorded in this directory. - -The "stmts" directory contains contributors' statements. |