DES-For-delphi-demo

说明：  一个应用密码学的源代码，主要完成应用密码方面的功能。(a Cryptographic Application source code, application code to complete the function.)

这是一个小程序,凯撒解密,自己写的,以后还会扩展的(This is a simple program for a example of ceasar cipher. It is produced by myself and I want to extend it to a substitution cipher program in some days.)

基于混沌的加密算法VC++测试源码，给大家做个参考-Chaos-based encryption algorithm VC++ Test source code for everyone to be a reference

一些重要的加密算法的实现---主要是针对大学密码学课程中的算法实践，例如： 维吉尼亚密码，置换密码，移位密码-Some key encryption algorithm--- mainly aimed at the realization of the University of cryptography algorithms for practical courses, such as: Virginia password, replacement password, password, and so shift

java编写MD5加密生成例子，对于需要加入密码验证的程序绝对实用，可以进行直接拷贝使用。-prepared MD5 encryption generated example, the need for password verification procedures for the practical, direct copy.

椭圆曲线密码C实现的，可以在++6.0下编译通过。希望对大家有帮助！-Elliptic Curve Cryptography C achieved in++ 6.0 compiler passed under. Would like to help everyone!

密码算法速度快于其他密码算法-Cipher faster than other cryptographic algorithms

为了提高图像加密算法的鲁棒性，提出了一种新的自适应图像加密算法。首先，把任意大小的灰度或彩 色图像分成2 × 2 子块 然后，用左上角子块的像素灰度值和Chebyshev 混沌映射构造与右上角子块等大的矩阵，用该 矩阵对右上角子块进行像素灰度值替换 最后，按顺时针对每个子块进行加密，直到左上角子块加密完毕。该算法不 依赖于图像的大小，而且适用于灰度图像和彩色图像，因而有很强的鲁棒性。同时灰度值扩散机制的引入使得该算 法具有良好的扩散性和扰乱性。(This paper presented a new self-adaptive image encryption algorithm so as to improve its robustness． Under this algorithm， a gray image or color image was divided into 2 × 2 size blocks． A corresponding size of matrix in the top right corner was created by the pixel gray-scale value of the top left corner under Chebyshev mapping． The gray-scale value of the top right corner block was then replaced by the matrix created before． The remaining blocks were encrypted in the same manner in clockwise until the top left corner block was finally encrypted． This algorithm is not restricted to the size of image and it is suitable to gray images and color images， which leads to better robustness． Meanwhile， the introduction of gray-scale value diffusion system equips this algorithm with powerful function of diffusion and disturbance．)

YT88是天域一个很不错的加密狗工具，可以源码加密，还可以外壳加密，带DLK开发包。(YT88 DLK)

MD5算法研究 最新的，具体内容看文章 Message-Digest Algorithm 5它的英文名字-MD5 algorithm studies newly, the concrete content looks at article Message-Digest the Algorithm 5 its English names