> Rule 1 for security systems: never publish your algorithms (which KEELOQ
> breaks).  KEELOQ is a product, and as such, is public knowledge to some
> degree.  Any security product has this limitation, so the only way to
> follow this rule is to write your own security system.

I don't know what rule book you're using, but people who take this stuff
seriously wouldn't agree with you.