DESEncryptionDecrypt

sha256的签名算法，纯C实现，已验证正确，在控制台上直接运行即可，(sha256 signature algorithm, pure C implementation ，has been verified properly and can be run directly on the console.)

md5及sha-1算法及验证文件，vc6.0调试无误(md5 and sha-1 algorithm and verification documents, vc6.0 debug and correct)

分析RSA算法的应用现状，论证文件加密应用RSA算法的可行性和意义。设计一套完整实用的RSA文件加密解决方案，具体编码实现。对RSA算法进行研究，从常规RSA算法出发，用C++实现RSA加密算法类库，并在32位windows平台封装成组件。在.Net平台引用此组件，实现可以对任意文件进行RSA加密操作的窗体应用程序。经过加密的文件以及密钥文件都是文本文件。给出关键类类图、整个应用程序的结构描述文档、关键模块流程图、较详细的接口文档、所有源代码。对应用程序进行测试，对测试结果进行分析研究，进而对应用程序进行改进，对关键算法进行尽可能的优化，最终得到一个在windows运行的可以用指定密钥对任意文件进行RSA加密并可解密的完整应用程序，和一些相关的可移植组件。 (RSA algorithm analysis application, appraisal document RSA encryption algorithm application of the feasibility and significance. Practical design of a complete set of documents RSA encryption solution to achieve specific coding. RSA algorithm to study conventional RSA algorithm, using C to achieve RSA encryption algorithm library. and 32% Packaging windows platform components. In. Net platform invocation components can be achieved for arbitrary document RSA encryption operation Window applications. After an encrypted file and key documents are text documents. Class is the key category map, the entire application document describes the structure, the key modules flowchart, more detailed interface documentation, All source code. Application procedures for conducting tests on the test results)

针对Logistic映射，实现数字图像迭代混沌加密算法()

VB程序注册机范例，控件简单实用，采用流行且难以破解的算法加密机器码、序列号、注册码，能更好地保护您的软件(VB program RI example, the controls simple and practical, using the popular and difficult to machine code to crack the encryption algorithms, serial numbers, registration codes, can better protect your software)

用C/C++实现加解密算法及其应用：AES 和基于AES 的CMAC(Encryption and decryption algorithm and its application with C/C++: AES and CMAC based on AES)

编写的DES 对称加解密技术，可随时进行明文密文之间的转换，有需要的朋友可以下载测试！本人目的打算对后台数据库的敏感信息字段用该方法加密，然后用软件权限控制读取，这样即使直接SQL后台取数，也得不到明文数据。(Write DES symmetrical encryption technology, may at any time for conversion between plaintext cipher, friends in need can be download test! I purpose going to the backstage database of sensitive information field with the method of encryption, and then use software to read access control, so even if the SQL backend access directly, also can not get clear data. )

一种加密算法,可以直接对密文进行操作，而不需要知道相应的明文。(homomorphic encryption)

本程序是仿射密码的加密与解密，用C语言编写的，经测试没有问题(This procedure is affine password encryption and decryption, written in C, tested no problem)

逆向工程揭秘，包含大量加密解密详细说明。学习逆向工程必备(The secret of Reverse engineering The detailed description contains a large number of encryption and decryption. To learn reverse engineering necessary)