Python cryptography.hazmat.primitives.hashes 模块，MD5 实例源码

def show_Certificate(cert, short=False):
    """
        Print Fingerprints, Issuer and Subject of an X509 Certificate.

        :param cert: X509 Certificate to print
        :param short: Print in shortform for DN (Default: False)

        :type cert: :class:`cryptography.x509.Certificate`
        :type short: Boolean
    """

    for h in [hashes.MD5, hashes.SHA1, hashes.SHA256, hashes.SHA512]:
        print("{}: {}".format(h.name, binascii.hexlify(cert.fingerprint(h())).decode("ascii")))
    print("Issuer: {}".format(get_Name(cert.issuer, short=short)))
    print("Subject: {}".format(get_Name(cert.subject, short=short)))

################################## AXML FORMAT ########################################
# Translated from
# http://code.google.com/p/android4me/source/browse/src/android/content/res/AXmlResourceParser.java

def hash_func(self):
        return {
            self.MD5: hashes.MD5,
            self.SHA1: hashes.SHA1,
            self.SHA224: hashes.SHA224,
            self.SHA256: hashes.SHA256,
            self.SHA384: hashes.SHA384,
            self.SHA512: hashes.SHA512,
        }[self]

def __init__(self):
        """
        Construct a CryptographyEngine.
        """
        self.logger = logging.getLogger('kmip.server.engine.cryptography')

        self._symmetric_key_algorithms = {
            enums.CryptographicAlgorithm.TRIPLE_DES: algorithms.TripleDES,
            enums.CryptographicAlgorithm.AES: algorithms.AES,
            enums.CryptographicAlgorithm.BLOWFISH: algorithms.Blowfish,
            enums.CryptographicAlgorithm.CAMELLIA: algorithms.Camellia,
            enums.CryptographicAlgorithm.CAST5: algorithms.CAST5,
            enums.CryptographicAlgorithm.IDEA: algorithms.IDEA,
            enums.CryptographicAlgorithm.RC4: algorithms.ARC4
        }
        self._asymetric_key_algorithms = {
            enums.CryptographicAlgorithm.RSA: self._create_rsa_key_pair
        }
        self._hash_algorithms = {
            enums.CryptographicAlgorithm.HMAC_SHA1: hashes.SHA1,
            enums.CryptographicAlgorithm.HMAC_SHA224: hashes.SHA224,
            enums.CryptographicAlgorithm.HMAC_SHA256: hashes.SHA256,
            enums.CryptographicAlgorithm.HMAC_SHA384: hashes.SHA384,
            enums.CryptographicAlgorithm.HMAC_SHA512: hashes.SHA512,
            enums.CryptographicAlgorithm.HMAC_MD5: hashes.MD5
        }