简单的文件加密程序，希望站长保留，一些小课程设计可以用...

DES算法程序，此程序为完整的程序，可以直接下载使用-DES algorithm procedure, this procedure for the complete procedure, can be directly downloaded using

welfare lottery 3D, projections, the software has shrunk. Is their half-year effort, delphi development, it is entirely possible commercialization of the software (value 10,000), Now it dedicated to the PUDN.com

BASE64编码的实现-BASE64 encoded realize

DEC算法的实现，很特别-DEC algorithm to achieve something special

md5加密算法源代码-The source code of MD5 encryption algorithm

/* RSA Demo 1.0 版 * 版权所有 (C) 2004 赵春生 * 2004.04.25 * http://timw.yeah.net * http://timw.126.com * 本程序调用Miracl ver 4.82大数运算库，详见其附带手册。 * P,Q,N,D,E使用RSATool2生成。 */ 编译提示： 一：将Project-Settings-Settings For(All Configuration)-C/C++中Category项的 Precompiled Headers设置成：Automatic use of precompiled headers（图1）。 二：将ms32.lib添加到工程中（图2）。 三：MIRACL是C库。 extern "C" { #include "miracl.h" #include "mirdef.h" } #pragma comment( lib, "ms32.lib" )-/* RSA Demo version 1.0* Copyright (C) 2004 Zhao Chunsheng 2004.04.25*** http://timw.126.com http://timw.yeah.net* The procedures called Miracl ver 4. The majority of computing for 82, as detailed in its fringe manual.* P, Q, N, D, E use RSATool2 generation.*/Compiler Tip : 1 : Project-Settings- Settings For (All Configuration)- C/C Category, of OO Headers set : Automatic use of precompiled headers (Figure 1). 2 : ms32.lib added to the project (Figure 2). 3 : MIRACL C library. Extern "C" (# include "miracl.h"# include "mirdef.h")# pragma

详细的介绍了RSA的实现过程，以及它的优化-Detail the realization of the RSA process, as well as its optimization

Arithmetic for integers of almost unlimited size for C and C++. Developed and copyrighted by Ralf Dentzer-Arithmetic for integers of almost unlimit ed size for C and C. Developed and copyrighted by Ralf Dentzer

对文件和文件夹进行简单加密-right files and folders simple encryption

ieee一种基于混沌的新加密方法An Image Encryption Scheme Based on Chaotic Map - In this paper, a novel block digital image encryp- tion scheme based on a chaotic coupled map lattices (CML) is reported. Within this scheme, an original image is decomposed into sub-blocks with a given size, and an external secret key with 192-bit is used and mapped to the system parameters, which are employed to generate a spatiotemporal chaotic binary sequence matrix to encrypt the block original image. Besides, the former sub-block encrypted result will be acted as a feedback to the following sub-block encryption proc- ess. The proposed scheme is described in detail, along with the security analyses such as key space analysis, sensitivity analysis, information entropy analysis and correlation coefficients analysis of adjacent pixels. The computer simulation results indicate that the suggested image encryption scheme has some properties desir- able in a good security