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+# -*- coding: utf-8 -*-
+# errors.py
+# Copyright (C) 2013 LEAP
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+
+"""
+Errors and exceptions used by the Key Manager.
+"""
+
+
+class KeyNotFound(Exception):
+ """
+ Raised when key was no found on keyserver.
+ """
+ pass
+
+
+class KeyVersionError(KeyNotFound):
+ """
+ Raised when key was found in the keyring but the version is not supported.
+
+ It will usually mean that it was created by a newer version of KeyManager.
+ """
+ pass
+
+
+class KeyAlreadyExists(Exception):
+ """
+ Raised when attempted to create a key that already exists.
+ """
+ pass
+
+
+class KeyAttributesDiffer(Exception):
+ """
+ Raised when trying to delete a key but the stored key differs from the key
+ passed to the delete_key() method.
+ """
+ pass
+
+
+class NoPasswordGiven(Exception):
+ """
+ Raised when trying to perform some action that needs a password without
+ providing one.
+ """
+ pass
+
+
+class InvalidSignature(Exception):
+ """
+ Raised when signature could not be verified.
+ """
+ pass
+
+
+class EncryptError(Exception):
+ """
+ Raised upon failures of encryption.
+ """
+ pass
+
+
+class DecryptError(Exception):
+ """
+ Raised upon failures of decryption.
+ """
+ pass
+
+
+class GPGError(Exception):
+ """
+ Raised upon failures of encryption/decryption.
+ """
+ pass
+
+
+class SignFailed(Exception):
+ """
+ Raised when failed to sign.
+ """
+ pass
+
+
+class KeyAddressMismatch(Exception):
+ """
+ A mismatch between addresses.
+ """
+
+
+class KeyFingerprintMismatch(Exception):
+ """
+ A mismatch between fingerprints.
+ """
+
+
+class KeyNotValidUpgrade(Exception):
+ """
+ Already existing key can not be upgraded with the new key
+ """
+
+
+class UnsupportedKeyTypeError(Exception):
+ """
+ Invalid key type
+ """