2 files changed, 15 insertions, 4 deletions
diff --git a/custodia/message/common.py b/custodia/message/common.py
index 25ce4e7..c538a57 100644
--- a/custodia/message/common.py
+++ b/custodia/message/common.py
@@ -1,5 +1,7 @@
 # Copyright (C) 2015  Custodia Project Contributors - see LICENSE file
 
+from custodia import log
+
 
 class InvalidMessage(Exception):
     """Invalid Message.
@@ -7,7 +9,9 @@ class InvalidMessage(Exception):
     This exception is raised when a message cannot be parsed
     or validated.
     """
-    pass
+    def __init__(self, message=None):
+        log.debug(message)
+        super(InvalidMessage, self).__init__(message)
 
 
 class UnknownMessageType(Exception):
@@ -16,7 +20,9 @@ class UnknownMessageType(Exception):
     This exception is raised when a message is of an unknown
     type.
     """
-    pass
+    def __init__(self, message=None):
+        log.debug(message)
+        super(UnknownMessageType, self).__init__(message)
 
 
 class UnallowedMessage(Exception):
@@ -25,7 +31,9 @@ class UnallowedMessage(Exception):
     This exception is raise when the message type is know but
     is not allowed.
     """
-    pass
+    def __init__(self, message=None):
+        log.debug(message)
+        super(UnallowedMessage, self).__init__(message)
 
 
 class MessageHandler(object):
diff --git a/custodia/message/kem.py b/custodia/message/kem.py
index 3d15e2f..343cb90 100644
--- a/custodia/message/kem.py
+++ b/custodia/message/kem.py
@@ -3,6 +3,7 @@
 from custodia.httpd.authorizers import SimplePathAuthz
 from custodia.message.common import InvalidMessage
 from custodia.message.common import MessageHandler
+from custodia import log
 from jwcrypto.common import json_decode
 from jwcrypto.common import json_encode
 from jwcrypto.jwe import JWE
@@ -19,7 +20,9 @@ KEY_USAGE_MAP = {KEY_USAGE_SIG: 'sig', KEY_USAGE_ENC: 'enc'}
 
 
 class UnknownPublicKey(Exception):
-    pass
+    def __init__(self, message=None):
+        log.debug(message)
+        super(UnknownPublicKey, self).__init__(message)
 
 
 class KEMKeysStore(SimplePathAuthz):