[tahoe-dev] started on pycryptopp
zooko at zooko.com
Tue Oct 30 23:16:44 UTC 2007
If you do a darcs get from http://allmydata.org/source/pycryptopp
you'll get a Python project. If you use its setup.py, and if you
already have Crypto++  on the appropriate library and include
paths, then you'll get a Python module named "pycryptopp".
So far, it only creates RSA-PSS-SHA256 signing keys -- it doesn't yet
have the ability to use them for anything. An interactive session
follows -- there are docs therein to show the intended API.
local/stow/pycryptopp/lib/python2.5/site-packages/ python -i
Python 2.5.1 (release25-maint:58710M, Oct 29 2007, 22:01:25)
[GCC 4.0.1 (Apple Computer, Inc. build 5367)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pycryptopp
>>> print pycryptopp.__doc__
pycryptopp - Python wrappers around Crypto++
To create a new RSA signing key from a seed, call generate_from_seed().
To create a new RSA signing key from the operating system's random
number generator, call generate().
To deserialize an RSA signing key from a string, call
To get an RSA verifying key from an RSA signing key, call
get_verifying_key() on the signing key.
To deserialize an RSA verifying key from a string, call
>>> signkey = pycryptopp.generate(1400)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
_pycryptopp.Error: Precondition violation: size in bits is required
to be >= 1536, but it was 1400
>>> signkey = pycryptopp.generate(1536)
WHEEE 1 !
<_pycryptopp.RSASigningKey object at 0x5480c0>
['__class__', '__delattr__', '__doc__', '__getattribute__',
'__hash__', '__init__', '__new__', '__reduce__', '__reduce_ex__',
'__repr__', '__setattr__', '__str__'
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