Arnold1

这是一个文本加密、解密系统，提供了对称加密和非对称加密两种模式。此外，还实现了数字签名及其验证功能。(This is a text encryption, decryption system provides symmetric encryption and asymmetric encryption mode. In addition, implementation of digital signature and the authentication function.)

(1). 复习AES原理。 (2). 用C/C++编写AES算法并调试通过。 (3). 复习CMAC原理。 (4). 在实现AES基础上，用C/C++编写CMAC算法并调试通过。 (5). 回答下列思考题。  AES解密算法和AES的逆算法之间有什么不同？  CMAC与HMAC相比，有什么优点？ ((1). Review AES works. (2) with C/C++ write and debug via the AES algorithm. (3) review CMAC principle. (4) on the basis of achieving AES using C/C++ CMAC algorithm written and debugged. (5) Answer the following Questions.  What is the difference between AES and AES decryption algorithm inverse algorithm?  CMAC compared with HMAC, what are the advantages?)

ElGamal密码算法的程序实现，在Dev-Cpp下编译通过，程序中还有较详细的注解.(ElGamal cipher program in Dev-Cpp compiler under the adopted procedures are more detailed comments.)

delphi6写的CRC32的加密算法。 另有付加例子程序-Delphi6 CRC wrote the encryption algorithm. Another example of pay increase procedures

基于 xinlinx 写的DES加密算法，内涵test bench，加密解密都有(Xinlinx written based on the DES encryption algorithm, meaning test bench, both encryption and decryption)

说明：  用visual c++ 写的des加密算法演示 (with visual c write des encryption algorithm demo)

采用对称密钥加密的3DES算法经典程序源码-using symmetric key encryption algorithms 3DES classic procedures FOSS

说明：  一个彩色视频加密程序，可以实现对彩色视频的加密解密。(A color video encryption program can realize the encryption and decryption of color video.)

借助MIRACL大数运算库实现对共享软件的安全注册。-With large numbers MIRACL library to achieve the shared computing software security register.

凯撒密码作为一种最为古老的对称加密体制，在古罗马的时候都已经很流行，他的基本思想是：通过把字母移动一定的位数来实现加密和解密。例如，如果密匙是把明文字母的位数向后移动三位，那么明文字母B就变成了密文的E，依次类推，X将变成A，Y变成B，Z变成C，由此可见，位数就是凯撒密码加密和解密的密钥。个人原创。(Caesar password as one of the most ancient symmetric encryption system in ancient Rome have been very popular, his basic idea is: by the letters move a certain number of bits to achieve encryption and decryption. For example, if the key is the number of bits of plaintext letters backward move three, the plaintext letter B into a ciphertext E, and so on, X will become Y-become a B,, and Z becomes C Thus, the median is the Caesar cipher encryption and decryption keys. Personal originality.)