无法正确加密 python3 中的数据

Question

嗨，我用 python2 编写了一段代码，使用 pycrypto 从字符串中加密和解密，这是代码

hex_key_bytes = array.array('B', [0xb8, 0xf4, 0xc9, 0x57, 0x6e, 0x12, 0xdd, 0x0d,0xb6, 0x3e, 0x8f, 0x8f, 0xac, 0x2b, 0x9a, 0x39]); # Python 2
hex_iv_bytes = array.array('B', [0xc7, 0x0f, 0x09, 0x5d, 0x8b, 0xb1, 0xa0, 0x60, 0x69, 0x9f, 0x7c, 0x19, 0x97, 0x4a, 0x1a, 0xa0]) # Python 2
BLOCK_SIZE = 16  

# Decryption Functions - START
def decrypt_message(message):
encrypted_msg = message;
cipher = AES.new(hex_key_bytes, AES.MODE_CBC, hex_iv_bytes);
test = cipher.decrypt(encrypted_msg.decode('hex')) #.rstrip('x00')
filtered_string =filter(lambda x: x in string.printable, test)
return filtered_string
# Decryption Functions - END

#Encryption Functions - START
#pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * 
#                chr(BLOCK_SIZE - len(s) % BLOCK_SIZE)
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * 
chr(0)
unpad = lambda s: s[:-ord(s[len(s) - 1:])]
def encrypt_msg(message):
raw = pad(message)
while(len(raw) != 48):
raw = raw+chr(0)
cipher = AES.new(hex_key_bytes, AES.MODE_CBC, hex_iv_bytes) 
encrypted_msg = (cipher.encrypt(raw)).encode("hex")
#logger.info("Writing encrypted packet to device " +encrypted_msg)
return encrypted_msg

我正在尝试在 python3 中迁移解决方案

以下是我所做的更改

from Crypto.Cipher import AES
import string
BLOCK_SIZE = 16  
hex_key_bytes = 'b8f4c9576e12dd0db63e8f8fac2b9a39'
hex_iv_bytes =  'c70f095d8bb1a060699f7c19974a1aa0'
hex_key_bytes = bytes.fromhex(hex_key_bytes)
hex_iv_bytes = bytes.fromhex(hex_iv_bytes)

# Decryption Functions - START
def decrypt_message(message):
encrypted_msg = message;
cipher = AES.new(hex_key_bytes, AES.MODE_CBC, hex_iv_bytes);
test = cipher.decrypt(encrypted_msg.fromhex()) #.rstrip('x00')
filtered_string =filter(lambda x: x in string.printable, test)
return filtered_string
# Decryption Functions - END

#Encryption Functions - START
#pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * 
#                chr(BLOCK_SIZE - len(s) % BLOCK_SIZE)
pad = lambda s: s + (BLOCK_SIZE - len(s) % BLOCK_SIZE) * 
chr(0)
unpad = lambda s: s[:-ord(s[len(s) - 1:])]
def encrypt_msg(message):
raw = pad(message)
while(len(raw) != 48):
raw = raw+chr(0)
cipher = AES.new(hex_key_bytes, AES.MODE_CBC, hex_iv_bytes)
print(cipher.encrypt(raw))  
encrypted_msg = (cipher.encrypt(raw)).hex()
#logger.info("Writing encrypted packet to device " +encrypted_msg)
return encrypted_msg

但是我面临的问题是加密字符串对于两者来说并不相同

中的相同文本

python3 --> 39c457ed7a0b6c61b936d538f9cd7815b48e674ead3cb810f20f57899c4a1b980d3206e421f045758a5ef07efd35e55f

python3 ->6055565cab3ae7229c8148d32d4f3397477b9cdf6b91252900c95d7509e52e80f6f42227d9b111176f6b662113900fb7

我该如何解决这个问题？

Answer 1

import ast
from base64 import b64encode
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import padding
from cryptography.hazmat.primitives.ciphers import Cipher
from cryptography.hazmat.primitives.ciphers import algorithms
from cryptography.hazmat.primitives.ciphers import modes

def encryptor(data):
"""
return encrypt data using AES algorithm
"""
key = 'your_key'[:32]
iv = 'your_iv'[:16]
iv = str(iv).encode("utf-8")
key = str(key).encode("utf-8")
data = json.dumps(data)
data = data.encode("utf-8")
padder = padding.PKCS7(128).padder()
message_encrypt = padder.update(data) + padder.finalize()
cipher = Cipher(algorithms.AES(key), modes.CBC(iv), backend=backend)
encryptor_cipher = cipher.encryptor()
ct = encryptor_cipher.update(message_encrypt) + encryptor_cipher.finalize()
ct_out = b64encode(ct)
return ct_out

def decryptor(data):
"""
return decrypt data using AES algorithm
"""
key = 'your_key'[:32]
iv = 'your_iv'[:16]
iv = str(iv).encode("utf-8")
key = str(key).encode("utf-8")
unpadder = padding.PKCS7(128).unpadder()
cipher = Cipher(algorithms.AES(key), modes.CBC(iv), backend=backend)
decryptor_cipher = cipher.decryptor()
ct = b64decode(data)
plain = decryptor_cipher.update(ct) + decryptor_cipher.finalize()
plain = unpadder.update(plain) + unpadder.finalize()
plain = plain.decode('utf-8')
plain = json.dumps(plain)
plain = json.loads(plain)
plain = ast.literal_eval(plain)
plain = ast.literal_eval(json.dumps(plain))
return plain