def decrypt(encryptPassword):
# 解密函数
base64Decoded = base64.b64decode(encryptPassword)
bs = AES.block_size
unpad = lambda s: s[0:-s[-1]]
iv = base64Decoded[:bs]
key = base64Decoded[-32:]
cipher = AES.new(key, AES.MODE_CBC, iv)
originalPassword = unpad(cipher.decrypt(base64Decoded[:-32]))[bs:]
return originalPassword
def encrypt(originalPassword):
# 加密函数
bs = AES.block_size
pad = lambda s: s + (bs - len(s) % bs) * chr(bs - len(s) % bs)
paddPassword = pad(originalPassword)
iv = Random.OSRNG.new().read(bs)
key = os.urandom(32)
cipher = AES.new(key, AES.MODE_CBC, iv)
encryptPassword = base64.b64encode(iv + cipher.encrypt(paddPassword) + key)
return encryptPassword
def _aes256cbc_encrypt(key, iv, plaintext):
cipher = _AES.new(key, _AES.MODE_CBC, iv)
ciphertext = cipher.encrypt(plaintext)
return ciphertext
def pycrypto_aes_ctr(key, index):
from Crypto.Cipher import AES
from Crypto.Util import Counter
ctr = Counter.new(128, initial_value=index)
return AES.new(key, AES.MODE_CTR, counter=ctr)
def pycrypto_aes_ecb(key):
from Crypto.Cipher import AES
return AES.new(key, AES.MODE_ECB)