Re: Searching for a special challenge&response algorithm

Jan Peter Stotz wrote:
I am just looking for a algorithm which could slow down password
guessing/brute force attacks on a more general level.

Oh, I didn't realize that was what you wanted. Ok, here are some more
key words that you can go read about: "password-authenticated key exchange"
(should be exactly what you want!), "key strengthening", "key stretching".
PKCS#5 is a good example of the latter.