ATSHA204

sha256计算代码，非常好用的代码，大家可以用这个代码直接计算哈希值，sha256实现 依次执行 SHA256Init、 SHA256Update SHA256Final 三个函数即可得到sha256结果(sha256 sourse code，Is very usefull)

说明：  c语言 SM2 SM3 SM4算法实现 ，直接运行(c language SM2 SM3 SM4 implementation)

一个周期3的多表代替密码，第1个表由密钥字法产生（密钥字自拟），第2个表由洗牌法产生（注意，字母a~z与数字0~25一一对应），第三个表由公式法产生（数学公式自拟，注意它须是Z26上的一个一一变换）(a cycle of three multi-table instead of passwords, a table by key word method, (key word from the intended), Table No. 2 produced by shuffling method (note, a letter with a number of z ~ 0 ~ 25 he gathers), 3rd tables generated by the formula (from the proposed mathematical formula, it should pay attention to the Z26 is a transformation on January 1))

AES DES 算法 实现 xcbc cmac ecb cbc ofb cfb pcbc ctr (AES, DES algorithm XCBC cmac ECB CBC ofb CFB PCBC CTR)

(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?)

用VC++开发的一款MFC程序，能很好地实现RSA加密和解密算法，对学习RSA加解密算法很有帮助(MFC with VC++ developed a program that can well realize RSA encryption and decryption algorithms, RSA encryption and decryption algorithms for learning helpful)

ATMEL公司的加密码ICATSHA204的驱动，可以很方便的移值到任何处理器上面。里面有详细的说明和操作。(ATMEL Corporation plus password ICATSHA204 driver, you can easily transfer value to any processor above. There are detailed instructions and operations.)

一个标准的MD5　hash算法C源代码，输出32字节的字符(A standard MD5 hash algorithm C source code, the output 32 bytes of characters)

DES、RSA、背包、AES、IDEA等各种加密算法的源码(All Kinds Of Encoding Algorithms)

OpenSSL的RSA算法应用举例。是用VC写的，有实用价值。(RSA algorithm of OpenSSL is used and given an example. Written with VC, there is practical value. )