[pycrypto] Troubles when porting from m2crypto

[Priit Laes]

Hey!

I'm currently in process of porting my code from m2crypt to pycrypto,
but I have run into an issue where pycrypto doesn't seem to be returning
correct results (tested on 32-bit Gentoo, pycrypto-2.5 + Debian 64bit
with consistent results):

#/usr/bin/env python
from M2Crypto import EVP

MSG = u'Hello world'

k = EVP.load_key('private_key.pem')
k.sign_init()
k.sign_update(MSG) # default is SHA1
print k.sign_final().encode('base64').strip()

### pycrypto
from Crypto.PublicKey import RSA
from Crypto.Hash import SHA
from Crypto.Util import number

with open('private_key.pem', 'r') as f:
    s = SHA.new(MSG).digest()
    k = RSA.importKey(f).sign(s, None)[0]
    print number.long_to_bytes(k).encode('base64').strip()


And this returns following:
J8ubNHhDmqMnvY3e1UidBnbQCryVkc45+F47L1jELa6ZQAHhi4mhOuwLc0AuCX+oWf2KRFHA/xt8
1D1RDoOl4S3Qv49SfLD1S5cwGyJnJsN0CfMxJ3pgQMs5HL9mSTLA8Mk1GOV9JsqbJdFiLj9IHyDS
k6d/5ZD+iWKjBatMczwB0Rwy0M9YgUogvYWmPLR1fSeEdZ0KeJnRk7TdrAOS52xXNUo4nkps55uJ
sa35ofdCDiywMIGu09ZRspCHz/fJNkpZb5OMD22N6rZDcTdSYQJQPGdFgOkjpKx/ifSZhdGccQnU
QPLLftJ9kizMIUsj0AbpRJbsxwW6QidQmoMj2w==
FKMyYbI/wwAM4DL7Sk/jWKH3Oa4pS1vAFNkQIwagZi2xaHdz+qJIF3tehMBUgKiPsY0DtIKXBPli
CUlBsOFXeH4VmRG6QGN2MU6+JW3C1NYKHf4iEUZjo6GJf2W1sa/qzvpFND7am8XPlTS7YbwtCVYF
LHKxjykekFOx4OKgLCon/ISctglbTjpR5nlJDB4N68FHdEcQSb9VTE+JfZV5OWhQP5oEGIKl3EhG
MqSowHgWOEGFgSo9FnOkrK260bZz+a4ZMH5zU5r2nONcNzEEnHyqBqVUdiB29mqhSrzUoZ2Mto0X
7J/L/PiXqaGFGhdC/FhM+LZaBnWff1J4z6grpw==


Am I doing something wrong? Or is there a bug?

Päikest,
Priit Laes :)
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