Encrypt with password

From: Bishoy George (bishoy_at_bishoy.com)
Date: 10/20/05 

Date: Thu, 20 Oct 2005 06:50:49 +0200

I want a class for encryption that takes a password or key and a string and
use the key to encrypt the string, so the decrypt method of that class will
never decrypt the encrypted string without giving it the same key.

Thanks,
Bishoy