Combining two messages... Dirk-Willem van Gulik <[EMAIL PROTECTED]> writes:
> > Securely random and unpredictable are effectively the same thing. > > Depends on your definition; one-way-function((count++) + (secret)) is > quite unpredictable; expcet for those knowing the secret. Secure random > generators give you a value which is unpredictable for all. And are a lot > more expensive generally. ... > > Securely random and unpredictable are effectively the same thing. > Depends on your definition; one-way-function((count++) + (secret)) is > quite unpredictable; expcet for those knowing the secret. Secure random > generators give you a value which is unpredictable for all. And are a lot > more expensive generally. What you've just described is a form of cryptographically secure PRNG called a "message digest in counter mode". This isn't exactly what I would use but it's roughly equivalent. -Ekr -- [Eric Rescorla [EMAIL PROTECTED]] http://www.rtfm.com/ -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>