2008 June : Dragons in the Algorithm


A random selection algorithm

Suppose you want to select k things randomly from a list of n items, with no duplicates. more…

Two more uses for a Secure Hash

In a previous article I talked about using salt with a secure hash, but all of the examples assumed that the secure hash would be used to validate passwords. Secure hashes can be used for many other purposes, and I’ll illustrate that by describing two other possible uses. more…

[Here there should be links to more entries, but WordPress is a pain and I can't make it work.]