Crypto

运用典型的ssh2框架，具有上传文件，加解密，数字签名和身份认证等功能(Use ssh2 typical framework, with the uploaded file encryption and decryption, digital signature and authentication functions)

说明：  MD5数字签名，加密算法，安全哈希加密算法(MD5 digital signature，encryption algorithm, encryption algorithm Secure Hash)

sh-1的加密解密算法的实现，有相关文件和代码(sh-1 encryption and decryption algorithm, related documents and code)

说明：  SM2 SM3 X.509 国密 证书 国密算法 国密证书 生成签发 相关代码 包含sm2国密算法密钥生成，证书请求生成，数字证书生成，sm3withsm2国密数字签名示例(SM2 SM3 X.509 Secret Certificate Secret Algorithms Secret Certificate Generation and Issuance of Related Codes Including SM2 encryption algorithm key generation, certificate request generation, digital certificate generation, sm3withsm2 encryption digital signature example)

制作数字证书的程序，比较简单，便于理解，希望有所帮助(Making digital certificate procedure is relatively simple, easy to understand, I hope to help)

MD5加密算法的COM控件以及编译的源码(MD5 encryption algorithm to compile the COM controls, as well as the source)

说明：  SHA-1加密算法的IP核，内涵文档，仿真测试文件(SHA-1 encryption algorithm of the IP core, the connotation of documents, simulation test file)

说明：  基本实现了数字证书的制作、SSL安全通讯、加解密操作等功能(basically achieved the production of digital certificates, SSL security communications, encryption and decryption operation functions)

pb 开发的MD5加密软件，转发给朋友们(pb developed MD5 encryption software, forward it to friends)

实验名称：关于数组下标越界的异常操作。 实验要求：自定义String类，当数组下标越界调用异常处理。 初步认识：通过C++的异常处理建立在三个关键字try 、catch和throw实现。(Laboratory name: about array subscript bounds of abnormal operation. Experimental requirements: custom String class, when the array subscript transitions exception handling. Preliminary understanding: by c++ exception handling is based on three key words the try and catch and throw.)