jCryption

It encrypts the POST/GET-data that will be sent to the server when a user submits a form.

It encrypts the data on the client (JavaScript) with the public key algorithm of RSA and decrypts in on the server with PHP.

It uses the Multiple-precision and Barrett modular reduction libraries for the calculations and jQuery for the rest.

Features:

• AES for data encryption
• RSA secured key exchanges
• AjaxSubmit supported
• No SSL required
• Easy to install, use and extend
• Doesn't block the browser on calculations

What is new in this release:

• Bi-Directional Communication with Server
• Encrypt & decrypt now with AES

What is new in version 1.2:

• Added PHP 5.3 backend, Keypair-Generator and major speed improvement.

What is new in version 1.1:

• Completely reworked the JavaScript code and almost redecued the filesize by the half.
• The biggest change is that you now can encrypt any string not just a form.

Requirements:

• JavaScript enabled on client side
• PHP 5 or higher
• jQuery 1.4.2 or higher