xmltooling issues SP 2.4.3 IIS

[Cantor, Scott E.]

One of my colleagues pointed out that the only place that exception
message is used is in the relay state and POST data preservation code. So
I imagine it's the relayState thing. In 2.4.1, I expanded the space used
for the random key to 128 bits, but because of where the values are
generated, I don't use the "secure" random generator, so I suspect it's
just the default PRNG causing problems.

Please file a bug on this if you would, and in the meantime, switching
back to "cookie" for the relayState should fix it.

-- Scott