Session Class Encryption

[eluser]Unknown[/eluser]
A bit of updated information...

If I turn off session cookie encryption, the error does not occur (everything works fine). So I know it's not the md5() PHP function (although that's raw PHP so I would be surprised if that was the problem anyhow). Further, simply loading the encryption class does not cause any problems so it must be one of the encryption calls within the session class during session creation/update. Nothing unexpected but I thought I'd lay it out clearly anyways. I am still operating under the assumption that I need to identify the security provider and include it in my Java configuration.