Rename Integrity_Failure to Invalid_Authentication_Tag

This makes the meaning and usage more clear.

Add a specific error type so invalid tags can be distinguished without
having to catch that specific type.

See also #1813

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lib/modes/aead/ccm/ccm.cpp b/src/lib/modes/aead/ccm/ccm.cpp
index f630dc39a..effe3a1ff 100644
--- a/src/lib/modes/aead/ccm/ccm.cpp
+++ b/src/lib/modes/aead/ccm/ccm.cpp
@@ -263,7 +263,7 @@ void CCM_Decryption::finish(secure_vector<uint8_t>& buffer, size_t offset)
    T ^= S0;
 
    if(!constant_time_compare(T.data(), buf_end, tag_size()))
-      throw Integrity_Failure("CCM tag check failed");
+      throw Invalid_Authentication_Tag("CCM tag check failed");
 
    buffer.resize(buffer.size() - tag_size());
    }