[formerly_proven]

This reminds me of a discussion a few years ago where someone was extremely adamant that you'd have to handle the chance of a key collision in a random 256-bit key for the system to be secure :)

[rocqua]

I might agree with them because your random process could be weaker than you think without having any indication until you hit the colision.

Anything past detection and panicking might be overkill tho.