MSL.py 文件源码

def __parse_crypto_keys(self, headerdata):
        self.__set_master_token(headerdata['keyresponsedata']['mastertoken'])
        # Init Decryption
        enc_key = headerdata['keyresponsedata']['keydata']['encryptionkey']
        hmac_key = headerdata['keyresponsedata']['keydata']['hmackey']
        encrypted_encryption_key = base64.standard_b64decode(enc_key)
        encrypted_sign_key = base64.standard_b64decode(hmac_key)
        cipher_rsa = PKCS1_OAEP.new(self.rsa_key)

        # Decrypt encryption key
        cipher_raw = cipher_rsa.decrypt(encrypted_encryption_key)
        encryption_key_data = json.JSONDecoder().decode(cipher_raw)
        self.encryption_key = base64key_decode(encryption_key_data['k'])

        # Decrypt sign key
        sign_key_raw = cipher_rsa.decrypt(encrypted_sign_key)
        sign_key_data = json.JSONDecoder().decode(sign_key_raw)
        self.sign_key = base64key_decode(sign_key_data['k'])

        self.__save_msl_data()
        self.handshake_performed = True