说明：  OpenSSL 是一个强大的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 powerful Secure Sockets Layer code library, include major cryptographic algorithms, key and certificate common package management functions and SSL protocols and provides rich application for testing or other purposes.)