OpenSSL 是一个安全套接字层密码库，囊括主要的密码算法、常用的密钥和证书封装管理功能及SSL协议，并提供丰富的应用程序供测试或其它目的使用。(OpenSSL is a secure socket layer (SSL) password library, include the main cipher algorithm commonly used keys and certificates, packaging management function and the SSL protoc