def __init__()

in oss2/crypto.py [0:0]

• 26 lines of code
• 5 McCabe index (conditional complexity)

    def __init__(self, dir=None, key='', passphrase=None, cipher=utils.AESCTRCipher(),
                 pub_key_suffix=DEFAULT_PUB_KEY_SUFFIX, private_key_suffix=DEFAULT_PRIV_KEY_SUFFIX):

        super(LocalRsaProvider, self).__init__(cipher=cipher)

        self.wrap_alg = headers.RSA_NONE_OAEPWithSHA1AndMGF1Padding
        keys_dir = dir or os.path.join(os.path.expanduser('~'), _LOCAL_RSA_TMP_DIR)

        priv_key_path = os.path.join(keys_dir, key + private_key_suffix)
        pub_key_path = os.path.join(keys_dir, key + pub_key_suffix)
        try:
            if os.path.exists(priv_key_path) and os.path.exists(pub_key_path):
                with open(priv_key_path, 'rb') as f:
                    self.__decrypt_obj = PKCS1_OAEP.new(RSA.importKey(f.read(), passphrase=passphrase))

                with open(pub_key_path, 'rb') as f:
                    self.__encrypt_obj = PKCS1_OAEP.new(RSA.importKey(f.read(), passphrase=passphrase))

            else:
                logger.warn('The file path of private key or public key is not exist, will generate key pair')
                private_key = RSA.generate(2048)
                public_key = private_key.publickey()

                self.__encrypt_obj = PKCS1_OAEP.new(public_key)
                self.__decrypt_obj = PKCS1_OAEP.new(private_key)

                utils.makedir_p(keys_dir)
                with open(priv_key_path, 'wb') as f:
                    f.write(private_key.exportKey(passphrase=passphrase))

                with open(pub_key_path, 'wb') as f:
                    f.write(public_key.exportKey(passphrase=passphrase))
        except (ValueError, TypeError, IndexError) as e:
            raise ClientError(str(e))