AES加密算法C代码.docx

1、AES加密算法C代码完整的！#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 = 57,49,41,33,25,17,9,1,59,51,43,35,27,19,11,3,61,53,45,37,29,2

2、1,13,5,63,55,47,39,31,23,15,7,56,48,40,32,24,16,8,0,58,50,42,34,26,18,10,2,60,52,44,36,28,20,12,4,62,54,46,38,30,22,14,6; /*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, 3

3、3,1,41,9,49,17,57,25, 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,

4、8,18,12,29,5,21,10,3,24; /*S盒*/int S8416 =/*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, 0,14,7,11,1

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

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

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

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

9、52,44,36,28, 20,12,4,27,19,11,3; /*置换选择2*/int PC_248 = 13,16,10,23,0,4,2,27, 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)

10、;int BitToByte(ElemType bit8,ElemType *ch);int Char8ToBit64(ElemType ch8,ElemType 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 tem

11、pbts48);int DES_ROL(ElemType data56, int time);int DES_IP_Transform(ElemType data64);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

12、 left32,ElemType right32);int DES_EncryptBlock(ElemType plainBlock8, ElemType subKeys1648, 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,

13、char *keyStr,char *plainFile); /*字节转换成二进制*/int ByteToBit(ElemType ch, ElemType bit8) int cnt; for(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,

14、ElemType bit64) int cnt; for(cnt = 0; cnt 8; cnt+) ByteToBit(*(ch+cnt),bit+(cnt3); return 0; /*将二进制位串转为长度为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,ElemTy

15、pe 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; f

16、or(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(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,ti

17、me); 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;

18、 cnt+) tempcnt = dataIP_Tablecnt; memcpy(data,temp,64); return 0; /*IP逆置换*/int DES_IP_1_Transform(ElemType data64) int cnt; ElemType temp64; for(cnt = 0; cnt 64; cnt+) tempcnt = dataIP_1_Tablecnt; memcpy(data,temp,64); return 0; /*扩展置换*/int DES_E_Transform(ElemType data48) int cnt; ElemType temp48;

19、for(cnt = 0; cnt 48; cnt+) tempcnt = dataE_Tablecnt; memcpy(data,temp,48); return 0; /*P置换*/int DES_P_Transform(ElemType data32) int cnt; ElemType temp32; for(cnt = 0; cnt 32; cnt+) tempcnt = dataP_Tablecnt; memcpy(data,temp,32); return 0; /*异或*/int DES_XOR(ElemType R48, ElemType L48 ,int count) int

20、 cnt; for(cnt = 0; cnt count; cnt+) Rcnt = Lcnt; return 0; /*S盒置换*/int DES_SBOX(ElemType data48) int cnt; int line,row,output; int cur1,cur2; for(cnt = 0; cnt 8; cnt+) cur1 = cnt*6; cur2 = cnt2; /*计算在S盒中的行与列*/ line = (datacur11) + datacur1+5; row = (datacur1+13) + (datacur1+22)+ (datacur1+33; datacu

21、r2+1 = (output&0X04)2; datacur2+2 = (output&0X02)1; datacur2+3 = output&0x01; return 0; /*交换*/int DES_Swap(ElemType left32, ElemType right32) ElemType temp32; memcpy(temp,left,32); memcpy(left,right,32); memcpy(right,temp,32); return 0; /*加密单个分组*/int DES_EncryptBlock(ElemType plainBlock8, ElemType s

22、ubKeys1648, ElemType cipherBlock8) ElemType plainBits64; ElemType copyRight48; int cnt; Char8ToBit64(plainBlock,plainBits); /*初始置换（IP置换）*/ DES_IP_Transform(plainBits); /*16轮迭代*/ for(cnt = 0; cnt = 0; cnt-) memcpy(copyRight,cipherBits+32,32); /*将右半部分进行扩展置换，从32位扩展到48位*/ DES_E_Transform(copyRight); /*将

23、右半部分与子密钥进行异或操作*/ DES_XOR(copyRight,subKeyscnt,48); /*异或结果进入S盒，输出32位结果*/ DES_SBOX(copyRight); /*P置换*/ DES_P_Transform(copyRight); /*将明文左半部分与右半部分进行异或*/ DES_XOR(cipherBits,copyRight,32); if(cnt != 0)/*最终完成左右部的交换*/DES_Swap(cipherBits,cipherBits+32); /*逆初始置换（IP1置换）*/ DES_IP_1_Transform(cipherBits); Bit64

24、ToChar8(cipherBits,plainBlock); return 0; /*加密文件*/int DES_Encrypt(char *plainFile, char *keyStr,char *cipherFile) FILE *plain,*cipher; int count; ElemType plainBlock8,cipherBlock8,keyBlock8; ElemType bKey64; ElemType subKeys1648; if(plain = fopen(plainFile,rb) = NULL) return PLAIN_FILE_OPEN_ERROR; i

25、f(cipher = fopen(cipherFile,wb) = NULL) return CIPHER_FILE_OPEN_ERROR; /*设置密钥*/ memcpy(keyBlock,keyStr,8); /*将密钥转换为二进制流*/ Char8ToBit64(keyBlock,bKey); /*生成子密钥*/ DES_MakeSubKeys(bKey,subKeys); while(!feof(plain) /*每次读8个字节，并返回成功读取的字节数*/ if(count = fread(plainBlock,sizeof(char),8,plain) = 8)DES_Encrypt

26、Block(plainBlock,subKeys,cipherBlock);fwrite(cipherBlock,sizeof(char),8,cipher); if(count) /*填充*/ memset(plainBlock + count,0,7 - count); /*最后一个字符保存包括最后一个字符在内的所填充的字符数量*/ plainBlock7 = 8 - count; DES_EncryptBlock(plainBlock,subKeys,cipherBlock); fwrite(cipherBlock,sizeof(char),8,cipher); fclose(plain); fclose(cipher)