which SP when signature validation fails?

Sat Jul 8 01:33:52 UTC 2023

I had an issue today when somebody was complaining about failed SSO that turned out to be an authentication request whose signature could not be validated. I'm not sure if I'm missing something, but I don't see anything in the logs that tells me which SP that was? While testing, and seeing the failure message in the browser, the only thing I see in the logs is:

2023-07-07 18:20:57,389 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [org.apache.xml.security.signature.XMLSignature:883] - Signature verification failed.
2023-07-07 18:20:57,389 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [net.shibboleth.idp.profile.impl.WebFlowMessageHandlerAdaptor:197] - Profile Action WebFlowMessageHandlerAdaptor: Exception handling message
2023-07-07 18:20:57,391 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [org.opensaml.profile.action.impl.LogEvent:101] - A non-proceed event occurred while processing the request: MessageAuthenticationError
2023-07-07 18:21:10,668 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [org.apache.xml.security.signature.XMLSignature:883] - Signature verification failed.
2023-07-07 18:21:10,668 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [net.shibboleth.idp.profile.impl.WebFlowMessageHandlerAdaptor:197] - Profile Action WebFlowMessageHandlerAdaptor: Exception handling message
2023-07-07 18:21:10,669 - 10.104.223.123/node02wpm5o1ux7i71d6dhdzxobae349338 - WARN [org.opensaml.profile.action.impl.LogEvent:101] - A non-proceed event occurred while processing the request: MessageAuthenticationError

Which tells me it happened, but not for which SP? When this failure occurs, other than the user informing us of what service they were trying to access, is there any way to tell on the idp side? Other than enabling debug logging?

Thanks...

--
Paul B. Henson  |  (909) 979-6361  |  http://www.cpp.edu/~henson/
Operating Systems and Network Analyst  |  henson at cpp.edu
California State Polytechnic University  |  Pomona CA 91768