sanesigner is a highlevel digital signature api component. it support generating and verifying digital signatures as well as encryption and decryption using public keys, and lots of other features in between.
The Moonbounce API is a set of highlevel objects that encapsulate pieces of the Bouncycastle lightweight crypto API. Moonbounce significantly simplifies RSA key generation, signing, encryption/decryption and verification of both byte arrays and files.
ObscureEncrypt is a highlevel security encrypter. It encrypts at three levels, 448 bit Blowfish encryption, Obscurity, highlevel encryption. Making it almost impossible to decrypt