h2H Messenger is a secure messenger client that uses PHP OpenSSL functions, mcrypt, and PHPSecLib to encrypt messages at-rest using RSA keys. The user only creates an account and the application handles the public key generation, key management, key exchange, and encryption and decryption of messages. There are no algorithms or key sizes to choose. It uses strong standards (AES 256, 4096 bit RSA Keys, SHA1, SHA512, etc.) in the background, and requires two-factor authentication using a code sent via SMS or using Asterisk.
mod_pLua is an Apache HTTP Server 2.x module for developing Web applications with Lua. With mod_pLua, you can use Lua for scripting in two distinct ways; Embedded Lua scripting, <?lua print("Hello, world!") ?>, or plain Lua scripting with a CGI-style interface. mod_pLua precompiles all scripts and caches the compiled binary code so that each new call to the same file will be lightning fast, allowing you to serve hundreds of thousands of requests per minute on any modern server. Mod_pLua supports both the traditional Lua interpreter as well as LuaJIT for both Windows and UNIX platforms. If your Web server supports it, mod_pLua also utilizes APR_DBD and mod_dbd to handle persistent database connections through the dbopen() Lua function.