Python HMAC.new方法代碼示例

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def getHBootKey(self):
        LOG.debug('Calculating HashedBootKey from SAM')
        QWERTY = "!@#$%^&*()qwertyUIOPAzxcvbnmQQQQQQQQQQQQ)(*@&%\0"
        DIGITS = "0123456789012345678901234567890123456789\0"

        F = self.getValue(ntpath.join('SAM\Domains\Account','F'))[1]

        domainData = DOMAIN_ACCOUNT_F(F)

        rc4Key = self.MD5(domainData['Key0']['Salt'] + QWERTY + self.__bootKey + DIGITS)

        rc4 = ARC4.new(rc4Key)
        self.__hashedBootKey = rc4.encrypt(domainData['Key0']['Key']+domainData['Key0']['CheckSum'])

        # Verify key with checksum
        checkSum = self.MD5( self.__hashedBootKey[:16] + DIGITS + self.__hashedBootKey[:16] + QWERTY)

        if checkSum != self.__hashedBootKey[16:]:
            raise Exception('hashedBootKey CheckSum failed, Syskey startup password probably in use! :(') 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def __decryptSecret(self, key, value):
        # [MS-LSAD] Section 5.1.2
        plainText = ''

        encryptedSecretSize = unpack('<I', value[:4])[0]
        value = value[len(value)-encryptedSecretSize:]

        key0 = key
        for i in range(0, len(value), 8):
            cipherText = value[:8]
            tmpStrKey = key0[:7]
            tmpKey = self.__cryptoCommon.transformKey(tmpStrKey)
            Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
            plainText += Crypt1.decrypt(cipherText)
            key0 = key0[7:]
            value = value[8:]
            # AdvanceKey
            if len(key0) < 7:
                key0 = key[len(key0):]

        secret = LSA_SECRET_XP(plainText)
        return secret['Secret'] 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def __decryptLSA(self, value):
        if self.__vistaStyle is True:
            # ToDo: There could be more than one LSA Keys
            record = LSA_SECRET(value)
            tmpKey = self.__sha256(self.__bootKey, record['EncryptedData'][:32])
            plainText = self.__cryptoCommon.decryptAES(tmpKey, record['EncryptedData'][32:])
            record = LSA_SECRET_BLOB(plainText)
            self.__LSAKey = record['Secret'][52:][:32]

        else:
            md5 = hashlib.new('md5')
            md5.update(self.__bootKey)
            for i in range(1000):
                md5.update(value[60:76])
            tmpKey = md5.digest()
            rc4 = ARC4.new(tmpKey)
            plainText = rc4.decrypt(value[12:60])
            self.__LSAKey = plainText[0x10:0x20] 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def decrypt(cls, key, keyusage, ciphertext):
        if len(ciphertext) < 24:
            raise ValueError('ciphertext too short')
        cksum, basic_ctext = ciphertext[:16], ciphertext[16:]
        ki = HMAC.new(key.contents, cls.usage_str(keyusage), MD5).digest()
        ke = HMAC.new(ki, cksum, MD5).digest()
        basic_plaintext = ARC4.new(ke).decrypt(basic_ctext)
        exp_cksum = HMAC.new(ki, basic_plaintext, MD5).digest()
        ok = _mac_equal(cksum, exp_cksum)
        if not ok and keyusage == 9:
            # Try again with usage 8, due to RFC 4757 errata.
            ki = HMAC.new(key.contents, pack('<I', 8), MD5).digest()
            exp_cksum = HMAC.new(ki, basic_plaintext, MD5).digest()
            ok = _mac_equal(cksum, exp_cksum)
        if not ok:
            raise InvalidChecksum('ciphertext integrity failure')
        # Discard the confounder.
        return basic_plaintext[8:] 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def GSS_GetMIC(self, sessionKey, data, sequenceNumber, direction = 'init'):
        GSS_GETMIC_HEADER = '\x60\x23\x06\x09\x2a\x86\x48\x86\xf7\x12\x01\x02\x02'
        token = self.MIC()

        # Let's pad the data
        pad = (4 - (len(data) % 4)) & 0x3
        padStr = chr(pad) * pad
        data += padStr
 
        token['SGN_ALG'] = GSS_HMAC
        if direction == 'init':
            token['SND_SEQ'] = struct.pack('>L', sequenceNumber) + '\x00'*4
        else:
            token['SND_SEQ'] = struct.pack('>L', sequenceNumber) + '\xff'*4

        Ksign = HMAC.new(sessionKey.contents, 'signaturekey\0', MD5).digest()
        Sgn_Cksum = MD5.new( struct.pack('<L',15) + str(token)[:8] + data).digest()
        Sgn_Cksum = HMAC.new(Ksign, Sgn_Cksum, MD5).digest()
        token['SGN_CKSUM'] = Sgn_Cksum[:8]

        Kseq = HMAC.new(sessionKey.contents, struct.pack('<L',0), MD5).digest()
        Kseq = HMAC.new(Kseq, token['SGN_CKSUM'], MD5).digest()
        token['SND_SEQ'] = ARC4.new(Kseq).encrypt(token['SND_SEQ'])
        finalData = GSS_GETMIC_HEADER + token.getData()
        return finalData 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def decrypt_hash(edata, nlkm, ch, xp = True):
    if xp:
        hmac_md5 = HMAC.new(nlkm, ch)
        rc4key = hmac_md5.digest()

        rc4 = ARC4.new(rc4key)
        data = rc4.encrypt(edata)
    else:
        # based on  Based on code from http://lab.mediaservice.net/code/cachedump.rb
        aes = AES.new(nlkm[16:32], AES.MODE_CBC, ch)
        data = ""
        for i in range(0, len(edata), 16):
            buf = edata[i : i + 16]
            if len(buf) < 16:
                buf += (16 - len(buf)) * "\00"
            data += aes.decrypt(buf)
    return data 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def encrypt(self, plaintext, esn):
        """
        Encrypt the given Plaintext with the encryption key
        :param plaintext:
        :return: Serialized JSON String of the encryption Envelope
        """
        init_vector = get_random_bytes(16)
        cipher = AES.new(self.encryption_key, AES.MODE_CBC, init_vector)
        ciphertext = base64.standard_b64encode(
            cipher.encrypt(Padding.pad(plaintext.encode('utf-8'), 16))).decode('utf-8')
        encryption_envelope = {
            'ciphertext': ciphertext,
            'keyid': '_'.join((esn, str(self.sequence_number))),
            'sha256': 'AA==',
            'iv': base64.standard_b64encode(init_vector).decode('utf-8')
        }
        return json.dumps(encryption_envelope) 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def __decryptHash(self, rid, cryptedHash, constant, newStyle = False):
        # Section 2.2.11.1.1 Encrypting an NT or LM Hash Value with a Specified Key
        # plus hashedBootKey stuff
        Key1,Key2 = self.__cryptoCommon.deriveKey(rid)

        Crypt1 = DES.new(Key1, DES.MODE_ECB)
        Crypt2 = DES.new(Key2, DES.MODE_ECB)

        if newStyle is False:
            rc4Key = self.MD5( self.__hashedBootKey[:0x10] + pack("<L",rid) + constant )
            rc4 = ARC4.new(rc4Key)
            key = rc4.encrypt(cryptedHash['Hash'])
        else:
            key = self.__cryptoCommon.decryptAES(self.__hashedBootKey[:0x10], cryptedHash['Hash'], cryptedHash['Salt'])[:16]

        decryptedHash = Crypt1.decrypt(key[:8]) + Crypt2.decrypt(key[8:])

        return decryptedHash 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def decrypt_hash(edata, nlkm, ch):
    hmac_md5 = HMAC.new(nlkm,ch)
    rc4key = hmac_md5.digest()

    rc4 = ARC4.new(rc4key)
    data = rc4.encrypt(edata)
    return data 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def create_signature(self, secret_key, to_sign):
        sign = HMAC.new(secret_key, to_sign, SHA)
        return str(b64encode(sign.hexdigest().encode()))

    # creates device spec JSON 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def _randnum(self, size):
        from Crypto import Random
        return Random.new().read(size) 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def PBKDF1(password, salt, dkLen, count=1000, hashAlgo=None):
    """Derive one key from a password (or passphrase).

    This function performs key derivation according an old version of
    the PKCS#5 standard (v1.5).
    
    This algorithm is called ``PBKDF1``. Even though it is still described
    in the latest version of the PKCS#5 standard (version 2, or RFC2898),
    newer applications should use the more secure and versatile `PBKDF2` instead.

    :Parameters:
     password : string
        The secret password or pass phrase to generate the key from.
     salt : byte string
        An 8 byte string to use for better protection from dictionary attacks.
        This value does not need to be kept secret, but it should be randomly
        chosen for each derivation.
     dkLen : integer
        The length of the desired key. Default is 16 bytes, suitable for instance for `Crypto.Cipher.AES`.
     count : integer
        The number of iterations to carry out. It's recommended to use at least 1000.
     hashAlgo : module
        The hash algorithm to use, as a module or an object from the `Crypto.Hash` package.
        The digest length must be no shorter than ``dkLen``.
        The default algorithm is `SHA1`.

    :Return: A byte string of length `dkLen` that can be used as key.
    """
    if not hashAlgo:
        hashAlgo = SHA1
    password = tobytes(password)
    pHash = hashAlgo.new(password+salt)
    digest = pHash.digest_size
    if dkLen>digest:
        raise ValueError("Selected hash algorithm has a too short digest (%d bytes)." % digest)
    if len(salt)!=8:
        raise ValueError("Salt is not 8 bytes long.")
    for i in xrange(count-1):
        pHash = pHash.new(pHash.digest())
    return pHash.digest()[:dkLen] 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def PBKDF2(password, salt, dkLen=16, count=1000, prf=None):
    """Derive one or more keys from a password (or passphrase).

    This performs key derivation according to the PKCS#5 standard (v2.0),
    by means of the ``PBKDF2`` algorithm.

    :Parameters:
     password : string
        The secret password or pass phrase to generate the key from.
     salt : string
        A string to use for better protection from dictionary attacks.
        This value does not need to be kept secret, but it should be randomly
        chosen for each derivation. It is recommended to be at least 8 bytes long.
     dkLen : integer
        The cumulative length of the desired keys. Default is 16 bytes, suitable for instance for `Crypto.Cipher.AES`.
     count : integer
        The number of iterations to carry out. It's recommended to use at least 1000.
     prf : callable
        A pseudorandom function. It must be a function that returns a pseudorandom string
        from two parameters: a secret and a salt. If not specified, HMAC-SHA1 is used.

    :Return: A byte string of length `dkLen` that can be used as key material.
        If you wanted multiple keys, just break up this string into segments of the desired length.
"""
    password = tobytes(password)
    if prf is None:
        prf = lambda p,s: HMAC.new(p,s,SHA1).digest()
    key = b('')
    i = 1
    while len(key)<dkLen:
        U = previousU = prf(password,salt+struct.pack(">I", i))
        for j in xrange(count-1):
            previousU = t = prf(password,previousU)
            U = strxor(U,t)
        key += U
        i = i + 1
    return key[:dkLen] 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def test1(self):
        # Test only for HMAC-SHA1 as PRF

        def prf(p,s):
            return HMAC.new(p,s,SHA1).digest()

        for i in xrange(len(self._testData)):
            v = self._testData[i]
            res  = PBKDF2(v[0], t2b(v[1]), v[2], v[3])
            res2 = PBKDF2(v[0], t2b(v[1]), v[2], v[3], prf)
            self.assertEqual(res, t2b(v[4]))
            self.assertEqual(res, res2) 

# 需要導入模塊: from Crypto.Hash import HMAC [as 別名]
# 或者: from Crypto.Hash.HMAC import new [as 別名]
def __restore(self):
        # First of all stop the service if it was originally stopped
        if self.__shouldStop is True:
            LOG.info('Stopping service %s' % self.__serviceName)
            scmr.hRControlService(self.__scmr, self.__serviceHandle, scmr.SERVICE_CONTROL_STOP)
        if self.__disabled is True:
            LOG.info('Restoring the disabled state for service %s' % self.__serviceName)
            scmr.hRChangeServiceConfigW(self.__scmr, self.__serviceHandle, dwStartType = 0x4)
        if self.__serviceDeleted is False:
            # Check again the service we created does not exist, starting a new connection
            # Why?.. Hitting CTRL+C might break the whole existing DCE connection
            try:
                rpc = transport.DCERPCTransportFactory(r'ncacn_np:%s[\pipe\svcctl]' % self.__smbConnection.getRemoteHost())
                if hasattr(rpc, 'set_credentials'):
                    # This method exists only for selected protocol sequences.
                    rpc.set_credentials(*self.__smbConnection.getCredentials())
                    rpc.set_kerberos(self.__doKerberos, self.__kdcHost)
                self.__scmr = rpc.get_dce_rpc()
                self.__scmr.connect()
                self.__scmr.bind(scmr.MSRPC_UUID_SCMR)
                # Open SC Manager
                ans = scmr.hROpenSCManagerW(self.__scmr)
                self.__scManagerHandle = ans['lpScHandle']
                # Now let's open the service
                resp = scmr.hROpenServiceW(self.__scmr, self.__scManagerHandle, self.__tmpServiceName)
                service = resp['lpServiceHandle']
                scmr.hRDeleteService(self.__scmr, service)
                scmr.hRControlService(self.__scmr, service, scmr.SERVICE_CONTROL_STOP)
                scmr.hRCloseServiceHandle(self.__scmr, service)
                scmr.hRCloseServiceHandle(self.__scmr, self.__serviceHandle)
                scmr.hRCloseServiceHandle(self.__scmr, self.__scManagerHandle)
                rpc.disconnect()
            except Exception, e:
                # If service is stopped it'll trigger an exception
                # If service does not exist it'll trigger an exception
                # So. we just wanna be sure we delete it, no need to 
                # show this exception message
                pass