Do not show password, during login, on an insecure channel (without SSL). Use a SHA-256 hash algorithm.
A simple PGP Mail Form Plugin. Enter your PGP public key, then visitors will be able to send you PGP encrypted messages by mail from a form.
A plugin to generate private and public PGP keys. No need to install any software to encrypt and decrypt PGP messages.
The ultimate Upload entry plugin for WordPress based websites!