AES加密算法c语言实现代码.pdf

1、AES加密算法c语言实现代码#include stdio.h#include memory.h#include time.h#include stdlib.h#define PLAIN_FILE_OPEN_ERROR-1#define KEY_FILE_OPEN_ERROR-2#define CIPHER_FILE_OPEN_ERROR-3#define OK 1 typedef char ElemType;/*初始置换表IP*/int IP_Table64=57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,61,53,45,37,29,21,13,5,

2、63,55,47,39,31,23,15,7,56,48,40,32,24,16,8,0,58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6;/*逆初始置换表IP-1*/int IP_1_Table64=39,7,47,15,55,23,63,31,38,6,46,14,54,22,62,30,37,5,45,13,53,21,61,29,36,4,44,12,52,20,60,28,35,3,43,11,51,19,59,27,34,2,42,10,50,18,58,26,33,1,41,9,49,17,5

3、7,25,32,0,40,8,48,16,56,24;/*扩充置换表E*/int E_Table48=31,0,1,2,3,4,3,4,5,6,7,8,7,8,9,10,11,12,11,12,13,14,15,16,15,16,17,18,19,20,19,20,21,22,23,24,23,24,25,26,27,28,27,28,29,30,31,0;/*置换函数P*/int P_Table32=15,6,19,20,28,11,27,16,0,14,22,25,4,17,30,9,1,7,23,13,31,26,2,8,18,12,29,5,21,10,3,24;/*S盒*/int S

4、8416=/*S1*/14,4,13,1,2,15,11,8,3,10,6,12,5,9,0,7,0,15,7,4,14,2,13,1,10,6,12,11,9,5,3,8,4,1,14,8,13,6,2,11,15,12,9,7,3,10,5,0,15,12,8,2,4,9,1,7,5,11,3,14,10,0,6,13,/*S2*/15,1,8,14,6,11,3,4,9,7,2,13,12,0,5,10,3,13,4,7,15,2,8,14,12,0,1,10,6,9,11,5,0,14,7,11,10,4,13,1,5,8,12,6,9,3,2,15,13,8,10,1,3,15,4,

5、2,11,6,7,12,0,5,14,9,/*S3*/10,0,9,14,6,3,15,5,1,13,12,7,11,4,2,8,13,7,0,9,3,4,6,10,2,8,5,14,12,11,15,1,13,6,4,9,8,15,3,0,11,1,2,12,5,10,14,7,1,10,13,0,6,9,8,7,4,15,14,3,11,5,2,12,/*S4*/7,13,14,3,0,6,9,10,1,2,8,5,11,12,4,15,13,8,11,5,6,15,0,3,4,7,2,12,1,10,14,9,10,6,9,0,12,11,7,13,15,1,3,14,5,2,8,4,3

6、,15,0,6,10,1,13,8,9,4,5,11,12,7,2,14,/*S5*/2,12,4,1,7,10,11,6,8,5,3,15,13,0,14,9,14,11,2,12,4,7,13,1,5,0,15,10,3,9,8,6,4,2,1,11,10,13,7,8,15,9,12,5,6,3,0,14,11,8,12,7,1,14,2,13,6,15,0,9,10,4,5,3,/*S6*/第 1 页AES加密算法c语言实现代码 12,1,10,15,9,2,6,8,0,13,3,4,14,7,5,11,10,15,4,2,7,12,9,5,6,1,13,14,0,11,3,8,9,1

7、4,15,5,2,8,12,3,7,0,4,10,1,13,11,6,4,3,2,12,9,5,15,10,11,14,1,7,6,0,8,13,/*S7*/4,11,2,14,15,0,8,13,3,12,9,7,5,10,6,1,13,0,11,7,4,9,1,10,14,3,5,12,2,15,8,6,1,4,11,13,12,3,7,14,10,15,6,8,0,5,9,2,6,11,13,8,1,4,10,7,9,5,0,15,14,2,3,12,/*S8*/13,2,8,4,6,15,11,1,10,9,3,14,5,0,12,7,1,15,13,8,10,3,7,4,12,5,6

8、,11,0,14,9,2,7,11,4,1,9,12,14,2,0,6,10,13,15,3,5,8,2,1,14,7,4,10,8,13,15,12,9,0,3,5,6,11;/*置换选择1*/int PC_156=56,48,40,32,24,16,8,0,57,49,41,33,25,17,9,1,58,50,42,34,26,18,10,2,59,51,43,35,62,54,46,38,30,22,14,6,61,53,45,37,29,21,13,5,60,52,44,36,28,20,12,4,27,19,11,3;/*置换选择2*/int PC_248=13,16,10,23,

9、0,4,2,27,14,5,20,9,22,18,11,3,25,7,15,6,26,19,12,1,40,51,30,36,46,54,29,39,50,44,32,46,43,48,38,55,33,52,45,41,49,35,28,31;/*对左移次数的规定*/int MOVE_TIMES16=1,1,2,2,2,2,2,2,1,2,2,2,2,2,2,1;int ByteToBit(ElemType ch,ElemType bit8);int BitToByte(ElemType bit8,ElemType*ch);int Char8ToBit64(ElemType ch8,Elem

10、Type bit64);int Bit64ToChar8(ElemType bit64,ElemType ch8);int DES_MakeSubKeys(ElemType key64,ElemType subKeys1648);int DES_PC1_Transform(ElemType key64,ElemType tempbts56);int DES_PC2_Transform(ElemType key56,ElemType tempbts48);int DES_ROL(ElemType data56,int time);int DES_IP_Transform(ElemType dat

11、a64);int DES_IP_1_Transform(ElemType data64);int DES_E_Transform(ElemType data48);int DES_P_Transform(ElemType data32);int DES_SBOX(ElemType data48);int DES_XOR(ElemType R48,ElemType L48,int count);int DES_Swap(ElemType left32,ElemType right32);int DES_EncryptBlock(ElemType plainBlock8,ElemType subK

12、eys1648,ElemType cipherBlock8);int DES_DecryptBlock(ElemType cipherBlock8,ElemType subKeys1648,ElemType plainBlock8);int DES_Encrypt(char*plainFile,char*keyStr,char*cipherFile);int DES_Decrypt(char*cipherFile,char*keyStr,char*plainFile);/*字节转换成二进制*/int ByteToBit(ElemType ch,ElemType bit8)int cnt;for

13、(cnt=0;cnt cnt)&1;return 0;/*二进制转换成字节*/int BitToByte(ElemType bit8,ElemType*ch)int cnt;for(cnt=0;cnt 8;cnt+)*ch|=*(bit+cnt)cnt;return 0;/*将长度为8的字符串转为二进制位串*/int Char8ToBit64(ElemType ch8,ElemType bit64)第 2 页AES加密算法c语言实现代码 int cnt;for(cnt=0;cnt 8;cnt+)ByteToBit(*(ch+cnt),bit+(cnt3);return 0;/*将二进制位串转为

14、长度为8的字符串*/int Bit64ToChar8(ElemType bit64,ElemType ch8)int cnt;memset(ch,0,8);for(cnt=0;cnt 8;cnt+)BitToByte(bit+(cnt3),ch+cnt);return 0;/*生成子密钥*/int DES_MakeSubKeys(ElemType key64,ElemType subKeys1648)ElemType temp56;int cnt;DES_PC1_Transform(key,temp);/*PC1置换*/for(cnt=0;cnt 16;cnt+)/*16轮跌代，产生16个子密

15、钥*/DES_ROL(temp,MOVE_TIMEScnt);/*循环左移*/DES_PC2_Transform(temp,subKeyscnt);/*PC2置换，产生子密钥*/return 0;/*密钥置换1*/int DES_PC1_Transform(ElemType key64,ElemType tempbts56)int cnt;for(cnt=0;cnt 56;cnt+)tempbtscnt=keyPC_1cnt;return 0;/*密钥置换2*/int DES_PC2_Transform(ElemType key56,ElemType tempbts48)int cnt;for

16、(cnt=0;cnt 48;cnt+)tempbtscnt=keyPC_2cnt;return 0;/*循环左移*/int DES_ROL(ElemType data56,int time)ElemType temp56;/*保存将要循环移动到右边的位*/memcpy(temp,data,time);memcpy(temp+time,data+28,time);/*前28位移动*/memcpy(data,data+time,28-time);memcpy(data+28-time,temp,time);/*后28位移动*/memcpy(data+28,data+28+time,28-time);memcpy(data+56-time,temp+time,time);return 0;/*IP置换*/int DES_IP_Transform(ElemType data64)int cnt;ElemType temp64;for(cnt=0;cnt 64;cnt+)tempcnt=dataIP_Tablecnt;memcpy(data,temp,64);return 0;第 3 页AES加