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 = str_to_key(block_key)
des = DES.new(des_key, DES.MODE_ECB)
decrypted_data += des.decrypt(enc_block)
j += 7
if len(key[j:j+7]) < 7:
j = len(key[j:j+7])
(dec_data_len,) = unpack("<L", decrypted_data[:4])
return decrypted_data[8:8+dec_data_len]
python类MODE_ECB的实例源码
def encrypt(self, data):
"""Encrypt sensitive data by KIK.
For (3)DES, data must be padded to BS.
For AES, if data not BS-alligned, they are padded by '80..00'"""
l = len(data)
if self.zAES:
l %= 16
if l > 0:
data += '\x80' + '\0'*(15-l)
key = AES.new(self.keyValue, AES.MODE_CBC, IV='\0'*16)
else:
# suppose 8B aligned data
assert l % 8 == 0
# for (3)DES KIK, ECB is used
# KeyType.DES_IMPLICIT is supposed to be 3DES ECB
if self.keyType in (KeyType.TDES_CBC, KeyType.DES_IMPLICIT):
key = DES3.new(self.keyValue, DES.MODE_ECB)
elif self.keyType in (KeyType.DES_ECB, KeyType.DES_CBC):
key = DES.new(self.keyValue, DES.MODE_ECB)
else:
raise ValueError("Unknown key type %02X" % self.keyType)
return key.encrypt(data)
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 = str_to_key(block_key)
des = DES.new(des_key, DES.MODE_ECB)
decrypted_data += des.decrypt(enc_block)
j += 7
if len(key[j:j+7]) < 7:
j = len(key[j:j+7])
(dec_data_len,) = 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_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 = str_to_key(block_key)
des = DES.new(des_key, DES.MODE_ECB)
decrypted_data += des.decrypt(enc_block)
j += 7
if len(key[j:j+7]) < 7:
j = len(key[j:j+7])
(dec_data_len,) = unpack("<L", decrypted_data[:4])
return decrypted_data[8:8+dec_data_len]
def decryptSecret(key, value):
# [MS-LSAD] Section 5.1.2
plainText = ''
key0 = key
for i in range(0, len(value), 8):
cipherText = value[:8]
tmpStrKey = key0[:7]
tmpKey = transformKey(tmpStrKey)
Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
plainText += Crypt1.decrypt(cipherText)
cipherText = cipherText[8:]
key0 = key0[7:]
value = value[8:]
# AdvanceKey
if len(key0) < 7:
key0 = key[len(key0):]
secret = LSA_SECRET_XP(plainText)
return (secret['Secret'])
def encryptSecret(key, value):
# [MS-LSAD] Section 5.1.2
plainText = ''
cipherText = ''
key0 = key
value0 = pack('<LL', len(value), 1) + value
for i in range(0, len(value0), 8):
if len(value0) < 8:
value0 = value0 + '\x00'*(8-len(value0))
plainText = value0[:8]
tmpStrKey = key0[:7]
tmpKey = transformKey(tmpStrKey)
Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
cipherText += Crypt1.encrypt(plainText)
plainText = plainText[8:]
key0 = key0[7:]
value0 = value0[8:]
# AdvanceKey
if len(key0) < 7:
key0 = key[len(key0):]
return cipherText
def SamDecryptNTLMHash(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.decrypt(Block1)
plain2 = Crypt2.decrypt(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 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 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 = str_to_key(block_key)
des = DES.new(des_key, DES.MODE_ECB)
decrypted_data += des.decrypt(enc_block)
j += 7
if len(key[j:j+7]) < 7:
j = len(key[j:j+7])
(dec_data_len,) = unpack("<L", decrypted_data[:4])
return decrypted_data[8:8+dec_data_len]
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 = str_to_key(block_key)
des = DES.new(des_key, DES.MODE_ECB)
decrypted_data += des.decrypt(enc_block)
j += 7
if len(key[j:j+7]) < 7:
j = len(key[j:j+7])
(dec_data_len,) = unpack("<L", decrypted_data[:4])
return decrypted_data[8:8+dec_data_len]
def calcKCV(keyValue, zAES=False):
"""Calculate KCV for symmetric key.
keyValue - key values as string (DES, 3DES2k, 3DES3k, AES)
zAES - True if key is AES (i.e. encrypt block of '01' instead of '00')
Return 3B-long string."""
if zAES:
assert len(keyValue) in (16, 24, 32), "Wrong length of AES key"
block = '\x01'*16
tkey = AES.new(keyValue, AES.MODE_ECB)
else:
assert len(keyValue) in (8, 16, 24), "Wrong length of (3)DES key"
block = '\x00'*8
if len(keyValue) == 8:
tkey = DES.new(keyValue, DES.MODE_ECB)
else:
tkey = DES3.new(keyValue, DES.MODE_ECB)
return tkey.encrypt(block)[:3]
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)
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 __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']
def decryptSecret(key, value):
# [MS-LSAD] Section 5.1.2
plainText = ''
key0 = key
for i in range(0, len(value), 8):
cipherText = value[:8]
tmpStrKey = key0[:7]
tmpKey = transformKey(tmpStrKey)
Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
plainText += Crypt1.decrypt(cipherText)
cipherText = cipherText[8:]
key0 = key0[7:]
value = value[8:]
# AdvanceKey
if len(key0) < 7:
key0 = key[len(key0):]
secret = LSA_SECRET_XP(plainText)
return (secret['Secret'])
def encryptSecret(key, value):
# [MS-LSAD] Section 5.1.2
plainText = ''
cipherText = ''
key0 = key
value0 = pack('<LL', len(value), 1) + value
for i in range(0, len(value0), 8):
if len(value0) < 8:
value0 = value0 + '\x00'*(8-len(value0))
plainText = value0[:8]
tmpStrKey = key0[:7]
tmpKey = transformKey(tmpStrKey)
Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
cipherText += Crypt1.encrypt(plainText)
plainText = plainText[8:]
key0 = key0[7:]
value0 = value0[8:]
# AdvanceKey
if len(key0) < 7:
key0 = key[len(key0):]
return cipherText
def SamDecryptNTLMHash(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.decrypt(Block1)
plain2 = Crypt2.decrypt(Block2)
return plain1 + plain2
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 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 des_base64_encrypt(cls, reqdata):
""" ??DES?base64?????
@:param reqdata ?????????
"""
key = cls.des_key
length = len(reqdata)
if length < cls.block_size:
add = cls.block_size - length
elif length > cls.block_size:
add = cls.block_size - (length % cls.block_size)
else:
add = 8
reqdata = reqdata + (cls.pad_str[add-1] * add)
des = DES.new(key, DES.MODE_ECB)
encrypt_data = des.encrypt(reqdata)
return base64.b64encode(encrypt_data)
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 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 decryptSecret(key, value):
# [MS-LSAD] Section 5.1.2
plainText = ''
key0 = key
for i in range(0, len(value), 8):
cipherText = value[:8]
tmpStrKey = key0[:7]
tmpKey = transformKey(tmpStrKey)
Crypt1 = DES.new(tmpKey, DES.MODE_ECB)
plainText += Crypt1.decrypt(cipherText)
cipherText = cipherText[8:]
key0 = key0[7:]
value = value[8:]
# AdvanceKey
if len(key0) < 7:
key0 = key[len(key0):]
secret = LSA_SECRET_XP(plainText)
return (secret['Secret'])
def SamDecryptNTLMHash(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.decrypt(Block1)
plain2 = Crypt2.decrypt(Block2)
return plain1 + plain2
