[pycrypto] FYI: PyCrypto on Google App Engine
Dwayne C. Litzenberger
dlitz at dlitz.net
Sun May 3 10:49:54 CST 2009
On Sat, May 02, 2009 at 03:15:42PM +0200, Mads Kiilerich wrote:
> App Engine includes a custom version of the Python Cryptography Toolkit
> <http://www.amk.ca/python/code/crypto>, also known as PyCrypto. The version
> included with App Engine is based on pycrypto 2.0.1. This is not the latest
> version <http://pycrypto.org>, but should be largely compatible with more
> recent versions.
Neat. Thanks for pointing this out.
> For reasons both technical and legal, the App Engine version of PyCrypto
> has the following differences from the original PyCrypto 2.0.1:
> * The RC5 and IDEA ciphers have been removed.
Makes sense. RC5 and IDEA are patent-encumbered.
> * The MODE_PGP encryption mode has been removed.
Hmm. Does anybody know why MODE_PGP would have been removed?
> * All public key cryptography routines are implemented in pure
> Python code. They do not use any native acceleration (C code).
In other words, they built PyCrypto without the optional support for libgmp
Dwayne C. Litzenberger <dlitz at dlitz.net>
Key-signing key - 19E1 1FE8 B3CF F273 ED17 4A24 928C EC13 39C2 5CF7
Annual key (2008) - 4B2A FD82 FC7D 9E38 38D9 179F 1C11 B877 E780 4B45
More information about the pycrypto