44 lines
1.4 KiB
Python
44 lines
1.4 KiB
Python
import os, base64, traceback
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from Crypto.Cipher import AES
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from Crypto import Random
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from . import logger
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BS = 16
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pad = lambda s: s + (BS - len(s) % BS) * chr(BS - len(s) % BS)
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unpad = lambda s : s[0:-s[-1]]
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key = b'140b41b22a29beb4061bda66b6747e14'
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class SupportAES(object):
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@classmethod
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def encrypt(cls, raw, mykey=None):
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try:
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Random.atfork()
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except Exception as exception:
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logger.error('Exception:%s', exception)
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logger.error(traceback.format_exc())
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raw = pad(raw)
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if type(raw) == type(''):
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raw = raw.encode()
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if mykey is not None and type(mykey) == type(''):
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mykey = mykey.encode()
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iv = Random.new().read( AES.block_size )
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cipher = AES.new(key if mykey is None else mykey, AES.MODE_CBC, iv )
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try:
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tmp = cipher.encrypt( raw )
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except Exception as exception:
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logger.error('Exception:%s', exception)
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logger.error(traceback.format_exc())
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tmp = cipher.encrypt( raw.encode() )
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ret = base64.b64encode( iv + tmp )
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ret = ret.decode()
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return ret
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@classmethod
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def decrypt(cls, enc, mykey=None):
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enc = base64.b64decode(enc)
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iv = enc[:16]
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if len(iv) != 16:
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iv = os.urandom(16)
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cipher = AES.new(key if mykey is None else mykey, AES.MODE_CBC, iv )
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return unpad(cipher.decrypt( enc[16:] )).decode()
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