result.md

• RMBP 15" / Early 2013(2.4GHz i7, 16GB RAM), CPython 2.7.6
• rsa==3.1.4
• pycrypto==2.6.1
• cryptography==0.5.3

Cryptography	PyCrypto	RSA
1.0222690105438232	1.453489065170288	4.905964136123657
1.0008471012115479	1.3903019428253174	4.860486030578613
0.9761111736297607	1.3885319232940674	5.226905107498169
0.9783790111541748	1.403367042541504	5.033346891403198
0.9941108226776123	1.3732759952545166	4.917948961257935
0.9868130683898926	1.372446060180664	4.915317058563232
0.993232011795044	1.381227970123291	4.905683994293213
0.9890398979187012	1.3831381797790527	4.940471887588501
0.9829819202423096	1.3643519878387451	4.9240992069244385
0.9794309139251709	1.3923370838165283	4.982703924179077

t_cryptography.py

from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes
from cryptography.hazmat.primitives.asymmetric import rsa, padding
from cryptography.hazmat.primitives.serialization import load_pem_pkcs8_private_key

with open('pk.pem') as f:
    pk = load_pem_pkcs8_private_key(f.read(),
                                    password=None,
                                    backend=default_backend())


def test():
    signer = pk.signer(padding.PKCS1v15(),
                       hashes.SHA1())
    signer.update('A'*1024)
    signer.finalize()

if __name__ == '__main__':
    import timeit
    print(timeit.repeat("test()",
                        setup="from __main__ import test",
                        repeat=10,
                        number=1000))

t_pycrypto.py

from Crypto.PublicKey import RSA
from Crypto.Signature import PKCS1_v1_5
from Crypto.Hash import SHA

with open('pk.pem') as f:
    pk = RSA.importKey(f.read())


def test():
    signer = PKCS1_v1_5.new(pk)
    digest = SHA.new()
    digest.update('A'*1024)
    signer.sign(digest)

if __name__ == '__main__':
    import timeit
    print(timeit.repeat("test()",
                        setup="from __main__ import test",
                        repeat=10,
                        number=1000))

t_rsa.py

import rsa

with open('pk.pem') as f:
    pk = rsa.PrivateKey.load_pkcs1(f.read())


def test():
    rsa.sign('A'*1024, pk, 'SHA-1')

if __name__ == '__main__':
    import timeit
    print(timeit.repeat("test()",
                        setup="from __main__ import test",
                        repeat=10,
                        number=1000))