[pycrypto] import/export for DSA keys

[Hans-Christoph Steiner]

On Dec 20, 2011, at 5:40 AM, Legrandin wrote:

>> I've gotten this import and export functionality working using a combination of pycrypto, python-potr, and pyparsing.
>> https://github.com/guardianproject/otrfileconverter
>> 
>> Would it make sense to cook this into pycrypto's DSA objects?
>> 
>> .hc
> 
> I felt the need for that a few times in the past, and adding it to
> pycrypto was high on my to-do list, so I totally vote for that.
> It should be a standard format though (like PKCS8), otherwise there is
> no benefit over pickle.
> I don't think it should require extra dependencies either.

My code can currently output PKCS8, I'm not using pickle at all.  As for extra dependencies, I agree it should be minimal.  It should be easy to get rid of the python-potr dependency, but getting rid of pyparsing would mean writing a S-expressions parser from scratch and getting rid of pyasn1 would mean writing a DER format parser from scratch.    I won't have time to write those chunks but would welcome anyone taking that on.  Or the other option is dropping the support of those formats in pycrypto.

.hc

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