Digital

STEGNOGRAPHYIn digital steganography, electronic communications may include steganographic coding inside of a transport layer, such as a document file, image file, program or protocol. Media files are ideal for steganographic transmission because of their large size. For example, a sender might start with an innocuous image file and adjust the color of every 100th pixel to correspond to a letter in the alphabet, a change so subtle that someone not specifically looking for it is unlikely to notice it.

EtherCAT基础技术介绍，讲的比较易懂。。。(EtherCAT basis of technical presentations, talking about relatively straightforward. . .)

制作数字证书的程序，比较简单，便于理解，希望有所帮助(Making digital certificate procedure is relatively simple, easy to understand, I hope to help)

说明：  基本实现了数字证书的制作、SSL安全通讯、加解密操作等功能(basically achieved the production of digital certificates, SSL security communications, encryption and decryption operation functions)

pb 开发的MD5加密软件，转发给朋友们(pb developed MD5 encryption software, forward it to friends)

说明：  MD5数字签名，加密算法，安全哈希加密算法(MD5 digital signature，encryption algorithm, encryption algorithm Secure Hash)

实验名称：关于数组下标越界的异常操作。 实验要求：自定义String类，当数组下标越界调用异常处理。 初步认识：通过C++的异常处理建立在三个关键字try 、catch和throw实现。(Laboratory name: about array subscript bounds of abnormal operation. Experimental requirements: custom String class, when the array subscript transitions exception handling. Preliminary understanding: by c++ exception handling is based on three key words the try and catch and throw.)

包含了产生逻辑斯蒂映射的代码,以及绘制了逻辑斯蒂映射的分岔图以及李雅普诺夫指数的图像,还有程序运行结果的图像.李雅普诺夫指数在研究动力系统的分岔、混沌运动特征中起着重要的作用,,李雅普诺夫指数大于0,处于混沌状态. (The logistic map contains the code, and draw the image bifurcation diagram of logistic map and Lyapunov exponent, image and program results. The Lyapunov exponent in the study of power system bifurcation and chaotic motion characteristics plays an important role, the Lee Yap Andrianof index is greater than 0, is in a chaotic state.)

DES Algorytm Decode/Encode

数字密写与密写技术 F5的Matlab源程序(Digital Steganography Steganography technology and F5 s Matlab source code)