Matriz

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.

华为各类工程师通信基础面试试题及答案，很值得一看(Huawei, based on various types of engineers, telecommunications and answer interview questions, it is worth a visit)

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.)

DES Algorytm Decode/Encode

剑指offer上的题目，求最小值的，比较基础，程序员面试别准备题目。(a problem in the way to offers.)

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

elgamal algo for encryption and decryption of a massege .

说明：  《C程序员成长攻略》-黎陡-源代码-4282(c program language leaning)

code of encryption rsa with matlab

说明：  国密算法SM9的C语言实现，包括数字签名、加密协商、数据加密功能(The C language implementation of SM9 includes digital signature, encryption negotiation and data encryption)