Secure Instant Messaging has following features:
- Secure Messaging with private\public keys
- RSA decryption/encryption
- Generate key pair and save keys as files

Usage is very easy and a manual also included in application.

An RSA key pair includes a private and a public key. The RSA private key is used to generate digital signatures, and the RSA public key is used to verify digital signatures. The RSA public key is also used for key encryption of DES or AES DATA keys and the RSA private key for key recovery.