Defensive programming

[Terry Reedy]

"Paul Miller" <pwmiller1 at adelphia.net> wrote in message
news:2e363c08.0306010923.a08627f at posting.google.com...
> What in the world are collision resistant hashes?

What was meant are hashes for which an attacker cannot feasibly
compute a set of colliding keys.  For open-source programs, this could
mean including a pseudorandom element to the algorithm that privately
changes value with each program startup.

Terry J. Reedy