DF Encryption Pad is a simple (and free) application that lets you encrypt and decrypt rich text messages using cut and paste. DF Encryption Pad uses 256-bit AES encryption with a key that it generates from the 'Pass Phrase' you supply. It can open and save both text files (.txt) and rich-text files (.rtf).

DF Encryption Pad is great for keeping confidential notes, and for encrypting email or short instant messages.