Cryptography-and-Network-Security

一个实现DES加解密算法的小程序，编程实现DES算法的加密过程、脱密过程和16个内部密钥生成过程(An implementation of DES encryption and decryption algorithm applet, programming encryption algorithm DES implementation process, from secret process and the 16 internal key generation process)

说明：  DES加密算法，C++编写，有界面有录像，写的很详细的大项目(DES encryption algorithm, C++ written, there is a video interface, written in large projects in great detail)

说明：  一个关于加密音频，图像的VB程序，功能还算可以，希望可以帮到人！！(One on encryption of audio, images VB program, function OK, the desire to help people! !)

软件加密 使用MD5算法对密码进行加密 软件加密 使用MD5算法对密码进行加密(Software encryption using MD5 algorithm to encrypt passwords)

RSA算法的解密和加密，用扩展的欧几里得算法求乘法逆元(rsa)

椭圆曲线加密算法，设置服务器一步的源代码(elliptic curve encryption algorithm, the step to set up the server source code)

sha256计算代码，非常好用的代码，大家可以用这个代码直接计算哈希值，sha256实现 依次执行 SHA256Init、 SHA256Update SHA256Final 三个函数即可得到sha256结果(sha256 sourse code，Is very usefull)

rockey6加密狗 dogsn名称为3000(dogsn3000)

生成RSA密钥，将密钥生成后`，存入文件中(RSA key generation, key generation `stored in the file)

windows登陆密码信息拦截，获取明文口令。程序对不同系统做了处理，在2000,2003,xp,vista上都可以截取， 在2000,2003,xp中，通过UNICODE_STRING.Length 的高8位取xor key,如果密码是编码过的，则通过ntdll.RtlRunDecodeUnicodeString解码， vista则通过AdvApi32.CredIsProtectedW判断密码是否编码过，解码用AdvApi32.CredUnprotectW。(The windows Password intercept, access to the plaintext password. Processing program on a different system in 2000, 2003, xp, vista can intercept, 2000,2003, xp UNICODE_STRING.Length high eight take xor key if the password is encoded by the ntdll.RtlRunDecodeUnicodeString decoding, vista, to judge by AdvApi32.CredIsProtectedW and password whether encoding, decoding AdvApi32.CredUnprotectW.)