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+ <H1>[pycrypto] FYI: PyCrypto on Google App Engine</H1>
+ <B>Dwayne C. Litzenberger</B>
+ <A HREF="mailto:pycrypto%40lists.dlitz.net?Subject=%5Bpycrypto%5D%20FYI%3A%20PyCrypto%20on%20Google%20App%20Engine&In-Reply-To=49FC477E.8060804%40kiilerich.com"
+ TITLE="[pycrypto] FYI: PyCrypto on Google App Engine">dlitz at dlitz.net
+ </A><BR>
+ <I>Sun May 3 10:49:54 CST 2009</I>
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+<PRE>On Sat, May 02, 2009 at 03:15:42PM +0200, Mads Kiilerich wrote:
+&gt;<i> <A HREF="http://code.google.com/appengine/docs/python/tools/libraries.html#PyCrypto">http://code.google.com/appengine/docs/python/tools/libraries.html#PyCrypto</A>
+</I>&gt;<i>
+</I>&gt;<i> App Engine includes a custom version of the Python Cryptography Toolkit
+</I>&gt;<i> &lt;<A HREF="http://www.amk.ca/python/code/crypto">http://www.amk.ca/python/code/crypto</A>&gt;, also known as PyCrypto. The version
+</I>&gt;<i> included with App Engine is based on pycrypto 2.0.1. This is not the latest
+</I>&gt;<i> version &lt;<A HREF="http://pycrypto.org">http://pycrypto.org</A>&gt;, but should be largely compatible with more
+</I>&gt;<i> recent versions.
+</I>
+Neat. Thanks for pointing this out.
+
+&gt;<i> For reasons both technical and legal, the App Engine version of PyCrypto
+</I>&gt;<i> has the following differences from the original PyCrypto 2.0.1:
+</I>&gt;<i>
+</I>&gt;<i> * The RC5 and IDEA ciphers have been removed.
+</I>
+Makes sense. RC5 and IDEA are patent-encumbered.
+
+&gt;<i> * The MODE_PGP encryption mode has been removed.
+</I>
+Hmm. Does anybody know why MODE_PGP would have been removed?
+
+&gt;<i> * All public key cryptography routines are implemented in pure
+</I>&gt;<i> Python code. They do not use any native acceleration (C code).
+</I>
+In other words, they built PyCrypto without the optional support for libgmp
+(_fastmath.c).
+
+
+--
+Dwayne C. Litzenberger &lt;<A HREF="http://lists.dlitz.net/cgi-bin/mailman/listinfo/pycrypto">dlitz at dlitz.net</A>&gt;
+ 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
+</PRE>
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