参照PGP，实现一个文件加密系统，包括对称加密，非对称加密和数字签名等功能。 可选开发语言工具：Openssl VC .net java -Reference to PGP, the realization of a file encryption system, including symmetric encryption, asymmetric encryption and digital signature functions. Optional tool for the

PGP email protocol full functional using public key infrastructure and RSA technique.

Basic RSA and PGP JAVA examples.