[pycrypto] Create a Digital Signature (DER Encoded PKCS#1) - SHA1withRSA

Thorsten Behrens sbehrens at gmx.li
Tue Dec 28 16:09:38 CST 2010

 >> It wasn't for Home Work :-)

Okay :D

> m.digest()
> or
> m.hexdigest() as the computed hash value.

That depends on what you want to do next. m.digest() returns the digest 
in binary form, ready to be used for further manipulation, such as 
having it signed. m.hexdigest() returns it in a form suitable for 
inclusion in a text transmission, such as email.

> Following this, how can i use Crypto again to Sign the computed Hash 
> Value using the Private Key?
PKCS #1 has not been integrated into trunk yet. There is a patch 
available, though, here: https://bugs.launchpad.net/pycrypto/+bug/502291


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