The show stopper!
Did some more testing on both the stand-alone signature program and AS2. Test results showed that it's not that the signature that the server gets and that which the test application gets are different. Did many times word by word double check on the code to make sure AS2’s digital signature function is using the same code of the signature program.
Going to do one last test: create a signature and try to verify it in the AS2 handler. So it doesn't check the received signature, but create a new one directly in the handler and try to verify it. Just as you do it in the test application. Let's see how IIS reacts (I bet it’s not going to work but anyway…).
IIS really sucks. There are reports about CryptographyExceptions with IIS all over the Internet, so it really seems to be a bug in IIS.
However, it may be because I’m using IIS 5.1 only and the latest version is 6.0. Maybe in the latest version the problems are fixed. However, IIS 6.0 is not freeware anymore. Christof is trying to get it for me from AARN.
End of the semester is approaching. Stress stress stress stress stress stress stress stress
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