Ecrypto2.0.tgz (29436 bytes) - an emacs crypto library. includes code for IDEA, Blowfish, SHA-1, MD5, RC16 (RC4 extension), an initial implementation of DES, and a few related toys. (note: sometimes the caching on this server seems to go haywire. if you end up with fewer than 29436 bytes, please mail me and i'll kick it until it works again. or check at this link.)
obscure.tgz (2201 bytes) - obscure.el, which uses SHA-1 and IDEA to encrypt buffers with passphrases.
zenirc-secure.tgz (18982 bytes) - adds cryptographically secure communication to zenirc, an IRC client for emacs.