MD5

FEC2/3加解码-FEC2/3 plus decoder

使用自定义密码 进行文件加密 使用传入密码生成 SymmetricAlgorithm-You can encrypt and decrypt file with your password.

按照分组密码运行的CBC方式，将其中的DES算法置换为S-DES，分组长度为8BIT，初始矢量V1分别设置为00H,FFH,及任意8BIT无符号整数，实现该加密/解密模型-running CBC, which will be the replacement for the DES algorithm S-DES, a length of 8BIT initial vector V1 were set to 00H, FFH, and the arbitrary 8BIT unsigned integers, the achievement of this encryption/decryption model

des加密，必须是8位英文字符，或4位中文字符-des encryption, must be 8 characters in English, or four Chinese characters

多数程序设计语言处理整数的能力是有限的，如C语言中，int类型数据范围是-32767----32767。实际问题的处理过程中往往涉及大整数的运算，如RSA加密算法要求至少64bit的整数，本程序是设计算法实现大整数的加减运算。-majority programming language processing is integral to the limited capacity, such as C language, int data type is the scope-32767---- 32767. Practical problems of the treatment process often involves large integer arithmetic, such as the RSA encryption algorithm requires at least 64-bit integers, the procedure is designed algorithm large integer addition and subtraction operations.

一个伪随机数生成程序，简单实用，有需要的请下载-A pseudo-random number generator, if necessary, please download the

说明：  通过DES加密算法原理，运用C++实现DES加密算法。(Based on the principle of DES encryption algorithm, the DES encryption algorithm is implemented with C++.)

Hideseek可将秘密文件隐写到指定图片中，并可检测隐写信息，本文是对该软件的使用说明。(hide &seek to run the file through individual test run normally. Hidden secret documents can be written to the specified picture, and can detect steganographic message.)

its about new technque using stream cipher

说明：  SM4加密算法的matlab语言实现，采用s盒变换、轮函数等。(SM4 encryption algorithm is realized by MATLAB language, using S-box transformation, wheel function and so on.)