hmac-encrypt-request

auth.py

from Crypto.Hash import HMAC
from Crypto.Hash import SHA

import hashlib
import datetime

class Auth:

    @classmethod
    def sign(cls, method, c_type, body, uri, key=None):
        sign = "%s\n%s\n%s\n%s\n%s\n" % (method, c_type,
                                         hashlib.md5(body).hexdigest(),
                                         datetime.datetime.utcnow()
                                            .strftime('%Y-%m-%d-%H:%M'), uri)
        return cls.crypt(sign, key)

    @classmethod
    def crypt(cls, value, key):
        return HMAC.new(key, value, SHA).hexdigest()