Re: Crypto-busting test case
I remember when, at one company we started of trying to work out how to be secure without locking ourselves out. Its not as easy as it sounds. A safe with the encryption code on an envelope? For $190 million that's not safe.You can keep adding layer after layer but it always ends up with a SPOF, either in terms of making it possible for others to get in or locking yourself out. Banks have two key access to boxes that are freely available to people with diamond tipped drills.
When working on something that is 'designed' to avoid outside scrutiny I can easily imagine keeping it in house and not trusting your colleagues this loophole was never looped.