import binascii from Cryptodome.Cipher import Blowfish, AES from Cryptodome.Hash import MD5 def _md5(data): h = MD5.new() h.update(data.encode() if isinstance(data, str) else data) return h.hexdigest() def _ecbCrypt(key, data): return binascii.hexlify(AES.new(key.encode(), AES.MODE_ECB).encrypt(data)) def _ecbDecrypt(key, data): return AES.new(key.encode(), AES.MODE_ECB).decrypt(binascii.unhexlify(data.encode("utf-8"))) def generateBlowfishKey(trackId): SECRET = 'g4el58wc0zvf9na1' idMd5 = _md5(trackId) bfKey = "" for i in range(16): bfKey += chr(ord(idMd5[i]) ^ ord(idMd5[i + 16]) ^ ord(SECRET[i])) return bfKey def decryptChunk(key, data): return Blowfish.new(key, Blowfish.MODE_CBC, b"\x00\x01\x02\x03\x04\x05\x06\x07").decrypt(data)