python类MODE_ECB的实例源码

def SamEncryptNTLMHash(encryptedHash, key):
    # [MS-SAMR] Section 2.2.11.1.1
    Block1 = encryptedHash[:8]
    Block2 = encryptedHash[8:]

    Key1 = key[:7]
    Key1 = transformKey(Key1)
    Key2 = key[7:14]
    Key2 = transformKey(Key2)

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

    plain1 = Crypt1.encrypt(Block1)
    plain2 = Crypt2.encrypt(Block2)

    return plain1 + plain2

def runTest(self):
        from Crypto.Cipher import DES
        from binascii import b2a_hex

        X = []
        X[0:] = [b('\x94\x74\xB8\xE8\xC7\x3B\xCA\x7D')]

        for i in range(16):
            c = DES.new(X[i],DES.MODE_ECB)
            if not (i&1): # (num&1) returns 1 for odd numbers 
                X[i+1:] = [c.encrypt(X[i])] # even
            else:
                X[i+1:] = [c.decrypt(X[i])] # odd

        self.assertEqual(b2a_hex(X[16]),
            b2a_hex(b('\x1B\x1A\x2D\xDB\x4C\x64\x24\x38')))

def decrypt_secret(secret, key):
    """Python implementation of SystemFunction005.

    Decrypts a block of data with DES using given key.
    Note that key can be longer than 7 bytes."""
    decrypted_data = ''
    j = 0   # key index
    for i in range(0, len(secret), 8):
        enc_block = secret[i:i + 8]
        block_key = key[j:j + 7]
        des_key = hashdump.str_to_key(block_key)

        des = DES.new(des_key, DES.MODE_ECB)
        enc_block = enc_block + "\x00" * int(abs(8 - len(enc_block)) % 8)
        decrypted_data += des.decrypt(enc_block)

        j += 7
        if len(key[j:j + 7]) < 7:
            j = len(key[j:j + 7])

    (dec_data_len,) = struct.unpack("<L", decrypted_data[:4])
    return decrypted_data[8:8 + dec_data_len]

def runTest(self):
        from Crypto.Cipher import DES
        from binascii import b2a_hex

        X = []
        X[0:] = [b('\x94\x74\xB8\xE8\xC7\x3B\xCA\x7D')]

        for i in range(16):
            c = DES.new(X[i],DES.MODE_ECB)
            if not (i&1): # (num&1) returns 1 for odd numbers 
                X[i+1:] = [c.encrypt(X[i])] # even
            else:
                X[i+1:] = [c.decrypt(X[i])] # odd

        self.assertEqual(b2a_hex(X[16]),
            b2a_hex(b('\x1B\x1A\x2D\xDB\x4C\x64\x24\x38')))

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def decrypt_config_bin(self, data):
        key = '\x47\x8D\xA5\x0B\xF9\xE3\xD2\xCF'
        crypto = DES.new(key, DES.MODE_ECB)
        data_decrypted = crypto.decrypt(data).rstrip('\0')
        authKey, cPskSecret, cUsrPIN = self.parse(data_decrypted)
        passwd = self.decrypt_authKey(authKey)
        return passwd, authKey, cPskSecret, cUsrPIN

def decrypt_config_bin(self, data):
        key = '\x47\x8D\xA5\x0B\xF9\xE3\xD2\xCF'
        crypto = DES.new(key, DES.MODE_ECB)
        data_decrypted = crypto.decrypt(data).rstrip('\0')
        authKey, cPskSecret, cUsrPIN = self.parse(data_decrypted)
        passwd = self.decrypt_authKey(authKey)
        return passwd, authKey, cPskSecret, cUsrPIN

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def ComputeNetlogonCredential(inputData, Sk):
    k1 = Sk[:7]
    k3 = crypto.transformKey(k1)
    k2 = Sk[7:14]
    k4 = crypto.transformKey(k2)
    Crypt1 = DES.new(k3, DES.MODE_ECB)
    Crypt2 = DES.new(k4, DES.MODE_ECB)
    cipherText = Crypt1.encrypt(inputData)
    return Crypt2.encrypt(cipherText)

# Section 3.1.4.4.1

def removeDESLayer(cryptedHash, rid):
        Key1,Key2 = deriveKey(rid)

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

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

        return decryptedHash

def __decryptHash(self, rid, cryptedHash, constant):
        # 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)

        rc4Key = self.MD5( self.__hashedBootKey[:0x10] + pack("<L",rid) + constant )
        rc4 = ARC4.new(rc4Key)
        key = rc4.encrypt(cryptedHash)

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

        return decryptedHash

def __removeDESLayer(self, cryptedHash, rid):
        Key1,Key2 = self.__cryptoCommon.deriveKey(int(rid))

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

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

        return decryptedHash

def __DES_block(key, msg):
    if POW:
        cipher = POW.Symmetric(POW.DES_ECB)
        cipher.encryptInit(__expand_DES_key(key))
        return cipher.update(msg)
    else:
        cipher = DES.new(__expand_DES_key(key),DES.MODE_ECB)
        return cipher.encrypt(msg)

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def decrypt_single_hash(rid, hbootkey, enc_hash, lmntstr):
    (des_k1,des_k2) = sid_to_key(rid)
    d1 = DES.new(des_k1, DES.MODE_ECB)
    d2 = DES.new(des_k2, DES.MODE_ECB)

    md5 = MD5.new()
    md5.update(hbootkey[:0x10] + pack("<L",rid) + lmntstr)
    rc4_key = md5.digest()
    rc4 = ARC4.new(rc4_key)
    obfkey = rc4.encrypt(enc_hash)
    hash = d1.decrypt(obfkey[:8]) + d2.decrypt(obfkey[8:])

    return hash

def __init__(self, key):
        """ Constructor, key is 3DES2k."""
        assert len(key) == 16, "3DES key must be 16B long"
        self.e = DES.new(key[:8], DES.MODE_ECB)
        self.d = DES.new(key[8:], DES.MODE_ECB)

def setValue(self, keyvalue):
        keyvalue = ''.join(keyvalue)
        if self.zAES:
            assert len(keyvalue) in (16, 24, 32)
            cipher = AES.new(keyvalue, AES.MODE_ECB)
            poly = cipher.encrypt('\x00'*self.BS)
            self.xorKey1 = self.polyMulX(poly)
            self.xorKey2 = self.polyMulX(self.xorKey1)
        else:
            if len(keyvalue) != self.keysize:
                raise ValueError("KIC/KID=%02X, value length received %d" %
                                 (self.iKICD, len(keyvalue)))
        self.keyval = keyvalue

def __init__(self, keyValue):
        assert len(keyValue) in (16, 24), "Wrong length of 3DES key"
        self.key = DES3.new(keyValue, DES.MODE_ECB)
        self.zAES = False