说明：  本代码提供了一个封装类，将OPENSSL提供的RSA1024加解密算法重新封装，简化输入输出参数，实现SHA1摘要、密钥导入导出、RSA签名、验证、加密、解密等基本功能，可直接引用到软件项目中使用，编译时另需要libeay32.lib的支持，请自行编译OPENSSL1.0.0b
(This code provides a wrapper class, the OPENSSL provides the RSA1024 encryption algorithm to re package, simplify the input and output parameters, the realization of the basic functions of SHA1 abstract, key import and export, RSA signature, authentication, encryption, decryption, can directly refer to the use of software project, also need the support of libeay32.lib compile time, please compile OPENSSL1.0.0b)