def decypt_data(key, data, mode=None, IV=None, pad=None, padmode=None):
if mode == None:
mode = pyDes.ECB
if padmode == None:
padmode = pyDes.PAD_NORMAL
if len(key) == 8:
des = pyDes.des(key, model=mode, IV=IV)
elif len(key) == 16 or len(key) == 24:
des = pyDes.triple_des(key, mode=mode, IV=IV)
else:
raise Exception("the length of key only can be 8, 16 or 24.")
return des.decrypt(data, pad=pad, padmode=padmode)
from pydes import pyDes
from pydes.pyDes import PAD_NORMAL
if __name__ == "__main__":
data = 'hello world'
k = pyDes.des(b'MYKEY123', pyDes.CBC, '\0\0\0\0\0\0\0\0', b' ')
encrypted = k.encrypt(data)
print(encrypted)
decrypted = k.decrypt(encrypted)
print(decrypted)
