这是一个密码学的课程设计。里面包括SPN加密、线性密码分析、差分密码分析、改进的SPN、随机性检测、生成RSA算法的参数、实现RAS和文件加解密功能。使用的是gmp库。对于学习密码学很有参考价值。-It was a cryptography course design. Which includes SPN encryption, linear cryptanalysis, differential cryptanalysis, improved SPN, random testing, gen

RSA公开密钥密码系统是由 R.Rivest，A.Shamir，L.Adleman 提出的，不仅仅可用于数据的加密，也可用于数字签名，其安全性比较高，用它来开发加密、解密系统的应用已经有很多了。-RSA public key cipher system is composed of R.Rivest, A.Shamir, L.Adleman proposed, not only can be used for data encryption, but also can be used for d

用于支付宝支付开发时候的RSA公钥私钥的加密，解密(The encryption and decryption of the private key of the RSA public key for the development of Alipay)