Python HMAC md5

gistfile1.py

#!/usr/bin/env python
from hashlib import md5 
trans_5C = "".join(chr(x ^ 0x5c) for x in xrange(256))
trans_36 = "".join(chr(x ^ 0x36) for x in xrange(256))
blocksize = md5().block_size
 
def hmac_md5(key, msg):
    if len(key) > blocksize:
        key = md5(key).digest()
    key += chr(0) * (blocksize - len(key))
    o_key_pad = key.translate(trans_5C)
    i_key_pad = key.translate(trans_36)
    return md5(o_key_pad + md5(i_key_pad + msg).digest())
 
if __name__ == "__main__":
    h = hmac_md5("key", "The quick brown fox jumps over the lazy dog")
    print h.hexdigest()  # 80070713463e7749b90c2dc24911e275

or just use hmac in py3

import hmac
def hmac_md5(key, s):
    return hmac.new(key.encode('utf-8'), s.encode('utf-8'), 'MD5').hexdigest()