AIDO uses it as well. Mainly through SSL, but it also uses Crypto.md5().
/ Per Hedbor ()
Previous text:
2003-03-19 12:53: Subject: S: Demonstrera för fredlig lösning
Primarily Roxen through SSL.pmod. There's also various other code in Roxen that use the hash algorithms, randomness generators etc. So it's not exactly an unused module that just sits around collecting dust.
/ Martin Stjernholm, Roxen IS