AES加密算法源代码.doc

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1、//AES.h#definedecryptTRUE#defineencryptFALSE#defineTYPEBOOLtypedefstruct_AES{intNb;intNr;intNk;unsignedlong*Word;unsignedlong*State;}AES;/*加密数据，这个函数和下面的InvCipher用于演示用的，只作了一次加密或解密。要进行大数据量加解密只需对这两个函数稍作修改就可以了。byte*input明文byte*inSize明文长byte*out密文存放的地方byte*

2、key密钥keybyte*keySize密钥长*/voidCipher(unsignedchar*input,intinSize,unsignedchar*out,unsignedchar*key,intkeySize);/*解密数据byte*input密文int*inSize密文长byte*out明文存放的地方byte*key密钥keyint*keySize密钥长*/voidInvCipher(unsignedchar*input,intinSize,unsignedchar*out,unsign

3、edchar*key,intkeySize);/*生成加密用的参数AES结构intinSize块大小byte*密钥int密钥长unsignedlong属性(标实类型)返回AES结构指针*/AES*InitAES(AES*aes,intinSize,unsignedchar*key,intkeySize,TYPEtype);/*生成加密用的参数AES结构intinSize块大小byte*密钥int密钥长返回AES结构指针*/AES*InitAES(intinSize,unsignedchar*key,

4、intkeySize,BOOL);/*加密时进行Nr轮运算AES*aes运行时参数*/voidCipherLoop(AES*aes);/*解密时进行Nr轮逆运算AES*aes运行时参数*/voidInvCipherLoop(AES*aes);/*释放AES结构和State和密钥库word*/voidfreeAES(AES*aes);//AES.cpp#include"stdafx.h"#include#include#include"AES.h"unsigne

5、dchar*SubWord(unsignedchar*word);unsignedlong*keyExpansion(unsignedchar*key,intNk,intNr,int);/*加密数据byte*input明文byte*inSize明文长byte*out密文存放的地方byte*key密钥keybyte*keySize密钥长*/voidCipher(unsignedchar*input,intinSize,unsignedchar*out,unsignedchar*key,intkeySi

6、ze){AESaes;InitAES(&aes,inSize,key,keySize,encrypt);//while(...){memcpy(aes.State,input,inSize);CipherLoop(&aes);memcpy(out,aes.State,inSize);//}}/*解密数据byte*input密文int*inSize密文长byte*out明文存放的地方byte*key密钥keyint*keySize密钥长*/voidInvCipher(unsignedchar*inpu

7、t,intinSize,unsignedchar*out,unsignedchar*key,intkeySize){AESaes;InitAES(&aes,inSize,key,keySize,decrypt);memcpy(aes.State,input,inSize);InvCipherLoop(&aes);memcpy(aes.State,out,inSize);}/*生成加密用的参数AES结构intinSize块大小byte*密钥int密钥长返回AES结构指针*/AES*InitAES(AE

8、S*aes,intinSize,unsignedchar*key,intkeySize,TYPEtype){intNb=inSize>>2,Nk=keySize>>2,Nr=NbNb=Nb;aes->Nk=Nk;aes->Nr=Nr;aes->Word=keyExpansion(key,Nb,Nr,Nk);aes->State=newunsignedlong[Nb+3];if(type)aes->State+=3;returnaes;