AES计数器模式C实现

#includestdio.h#includetime.h#includestdlib.h#includemath.h#includestring.h#includemalloc.h#defineSIZE17#defineM4//¶¨Òå4*4µÄ¾ØÕótypedefstruct{inta[M][M];}state;#defineN17//¾ØÕóÖÐÓÐ16¸öÔªËØtypedefstruct{intla[N];}text;intBitRandNum(unsignedintbits);//¶¨ÒåËæ»úº¯ÊýstateInitState(textt);//³õʼ»¯tstateAddRoundKey(statesta,textkey);//AddRoundKeyÂÖÃÜÔ¿¼ÓstateSubBytes(statesta);//SubBytes×Ö½Ú´úÌæstateShiftRows(statesta);//shiftrowsÐÐÒÆλstateMixColumn(statesta);//MixColumnÁлìºÏtext*KeyExpansion(textkey);//KeyExpansionÃÜÔ¿À©Õ¹textAESCTR(textt,textkey);//CTRģʽµÄAES¼ÓÃܺ¯Êý£¬ÃÜԿΪkey£¬Ã÷ÎÄΪtintSBoxReplace(intnum,intSBox[]);//SºÐÖû»int*LeftMove(intb[],intn);//×óÒÆstatePrintSTATE(textt);//°ÑÒ»ÁÐÊýtת»»³É¾ØÕóµÄÐÎʽintSBox[]={//¶¨ÒåSºÐ0x63,0x7C,0x77,0x7B,0xF2,0x6B,0x6F,0xC5,0x30,0x01,0x67,0x2B,0xFE,0xD7,0xAB,0x76,0xCA,0x82,0xC9,0x7D,0xFA,0x59,0x47,0xF0,0xAD,0xD4,0xA2,0xAF,0x9C,0xA4,0x72,0xC0,0xB7,0xFD,0x93,0x26,0x36,0x3F,0xF7,0xCC,0x34,0xA5,0xE5,0xF1,0x71,0xD8,0x31,0x15,0x04,0xC7,0x23,0xC3,0x18,0x96,0x05,0x9A,0x07,0x12,0x80,0xE2,0xEB,0x27,0xB2,0x75,0x09,0x83,0x2C,0x1A,0x1B,0x6E,0x5A,0xA0,0x52,0x3B,0xD6,0xB3,0x29,0xE3,0x2F,0x84,0x53,0xD1,0x00,0xED,0x20,0xFC,0xB1,0x5B,0x6A,0xCB,0xBE,0x39,0x4A,0x4C,0x58,0xCF,0xD0,0xEF,0xAA,0xFB,0x43,0x4D,0x33,0x85,0x45,0xF9,0x02,0x7F,0x50,0x3C,0x9F,0xA8,0x51,0xA3,0x40,0x8F,0x92,0x9D,0x38,0xF5,0xBC,0xB6,0xDA,0x21,0x10,0xFF,0xF3,0xD2,0xCD,0x0C,0x13,0xEC,0x5F,0x97,0x44,0x17,0xC4,0xA7,0x7E,0x3D,0x64,0x5D,0x19,0x73,0x60,0x81,0x4F,0xDC,0x22,0x2A,0x90,0x88,0x46,0xEE,0xB8,0x14,0xDE,0x5E,0x0B,0xDB,0xE0,0x32,0x3A,0x0A,0x49,0x06,0x24,0x5C,0xC2,0xD3,0xAC,0x62,0x91,0x95,0xE4,0x79,0xE7,0xC8,0x37,0x6D,0x8D,0xD5,0x4E,0xA9,0x6C,0x56,0xF4,0xEA,0x65,0x7A,0xAE,0x08,0xBA,0x78,0x25,0x2E,0x1C,0xA6,0xB4,0xC6,0xE8,0xDD,0x74,0x1F,0x4B,0xBD,0x8B,0x8A,0x70,0x3E,0xB5,0x66,0x48,0x03,0xF6,0x0E,0x61,0x35,0x57,0xB9,0x86,0xC1,0x1D,0x9E,0xE1,0xF8,0x98,0x11,0x69,0xD9,0x8E,0x94,0x9B,0x1E,0x87,0xE9,0xCE,0x55,0x28,0xDF,0x8C,0xA1,0x89,0x0D,0xBF,0xE6,0x42,0x68,0x41,0x99,0x2D,0x0F,0xB0,0x54,0xBB,0x16};textAESCTR(textt,textkey)//CTRģʽµÄAES¼ÓÃܺ¯Êý£¬Ëæ»úÊýΪt¡£ÃÜԿΪkey{statesta,sta1,sta2,mingwen1;//mingwen1Ϊ³õʼºóµÄÃ÷ÎÄ£¬Êä³ö¿éΪ×îÖÕµÄstainti,j,k,s;textmingwen,miwen;//Ã÷ÎÄΪmingwen£¬ÃÜÎÄΪmiwentext*RoundKey;RoundKey=(text*)malloc(11*sizeof(text));for(i=0;i4;i++){//°ÑËæ»úÊýtת»»³É¾ØÕóµÄÐÎʽstafor(j=0;j4;j++){s=4*i+j;sta.a[i][j]=t.la[s];}}RoundKey=KeyExpansion(key);//ÃÜÔ¿À©Õ¹£¬µÃµ½×ÓÃÜÔ¿sta1=AddRoundKey(sta,RoundKey[0]);//Ê×ÂÖÂÖÃÜÔ¿¼Ó¡£Ëæ»úÊýºÍ×ÓÃÜÔ¿//¹²10ÂÖfor(i=1;i10;i++)//ÖмäÂֱ任{sta=SubBytes(sta1);//×ֽڱ任sta1=ShiftRows(sta);//ÐÐÒÆλsta=MixColumn(sta1);//ÁлìºÏsta1=AddRoundKey(sta,RoundKey[i]);//ÂÖÃÜÔ¿¼Ó£¬RoundKey[i]±íʾµÚiÁÐ×ÓÃÜÔ¿}//×îºóÂֱ任£¨ÎÞÁлìºÏ£©sta=SubBytes(sta1);//×ֽڱ任sta1=ShiftRows(sta);//ÐÐÒÆλsta=AddRoundKey(sta1,RoundKey[10]);//ÂÖÃÜÔ¿¼Ómingwen1=InitState(mingwen);//³õʼ»¯Ã÷ÎÄ¿éfor(i=0;i4;i++){//³õʼºóµÄÃ÷ÎÄmingwen1ÓëµÃµ½µÄÊä³ö¿éstaÒì»òµÃµ½ÃÜÎÄfor(j=0;j4;j++){k=j*4+i;sta2.a[i][j]=sta.a[i][j]^mingwen1.a[k][j];miwen.la[k]=sta2.a[i][j];}}free(RoundKey);returnmiwen;}stateInitState(textt)//³õʼ»¯State,ÁÐÏòÌî³ä¾ØÕó{statesta;intk,i,j;for(i=0;iM;i++){for(j=0;jM;j++){k=j*4+i;sta.a[i][j]=t.la[k];}}returnsta;}stateAddRoundKey(statesta,textkey)//ÂÖÃÜÔ¿¼Ó£¬¼´ÓëÃÜÔ¿½øÐÐÒì»òÔËËã{statesta2;intk,i,j;for(i=0;iM;i++){//M=4for(j=0;jM;j++){k=j*4+i;sta2.a[i][j]=sta.a[i][j]^key.la[k];}}returnsta2;}intRCon[10][4]={//Ç°Ê®Âֵij£Á¿0x01,0x0,0x0,0x0,0x02,0x0,0x0,0x0,0x04,0x0,0x0,0x0,0x08,0x0,0x0,0x0,0x10,0x0,0x0,0x0,0x20,0x0,0x0,0x0,0x40,0x0,0x0,0x0,0x80,0x0,0x0,0x0,0x1B,0x0,0x0,0x0,0x36,0x0,0x0,0x0,};//ÊéÉÏ63Ò³text*KeyExpansion(textkey)//ÃÜÔ¿À©Õ¹£¬µÃµ½×ÓÃÜÔ¿£¬keyΪ³õʼÃÜÔ¿{text*Newkey;//À©Õ¹ºó44ÁÐ×ÓÃÜÔ¿intWkey[44][4],temp[4],temp1[4],*temp2;//Wkey[44][4]±íʾ¹²44ÁÐÁÐÏòÁ¿inti,j,k,l,l2;//iΪҪÀ©Õ¹µÄÊǵÚi+1ÁÐNewkey=(text*)malloc(11*sizeof(text));temp2=(int*)malloc(4*sizeof(int));for(i=0;i4;i++){//Ç°4ÁÐÁÐÏòÁ¿Îª³õʼÃÜÔ¿for(j=0;j4;j++){l=4*i+j;Wkey[i][j]=key.la[l];}}for(i=4;i44;i++){//ÐèÒªÀ©Õ¹40ÁÐÁÐÏòÁ¿.(ÊéÉÏ62Ò³)for(j=0;j4;j++)temp[j]=Wkey[i-1][j];if(i%4==0)//iÊÇ4µÄ±¶Êý{temp2=LeftMove(temp,1);//×óÒÆfor(k=0;k4;k++)//k±íʾËĸö×Ö½Ú{l=i/4-1;temp1[k]=SBoxReplace(*(temp2+k),SBox);//SºÐÖû»temp[k]=temp1[k]^RCon[l][k];//¼ÆËã³£Á¿}}else{//i²»ÊÇ4µÄ±¶Êýfor(j=0;j4;j++){l=i-4;Wkey[i][j]=Wkey[l][j]^temp[j];//µÚi-4ÁÐÓëµÚi-1ÁÐÁÐÏòÁ¿Òì»ò}}}for(i=0;i11;i++)///°ÑWkey[0]~Wkey[43]¹²44ÁÐÁÐÏòÁ¿ÒÀ´Î´æÈëµ½NewKeyÖÐ{for(j=0;j4;j++){l=i*4+j;for(k=0;k4;k++){l2=j*4+k;(Newkey+i)-la[l2]=Wkey[l][k];}}}free(temp2);returnNewkey;}stateSubBytes(statesta)//×ֽڱ任{statesta2;inti,j;for(i=0;iM;i++){for(j=0;jM;j++){sta2.a[i][j]=SBoxReplace(sta.a[i][j],SBox);//SºÐÖû»}}returnsta2;}intSBoxReplace(intnum,intSBox[])//SºÐÖû»{intx,y,k,xy;x=num%16;//¸ö룬ÁÐÖµy=(num/16)%16;//ʮ룬ÐÐÖµk=(y*16)+x;xy=SBox[k];returnxy;}stateShiftRows(statesta)//ÐÐÒÆλ{statesta2;int*h;inti,j;h=(int*)malloc(M*sizeof(int));for(i=0;iM;i++)//µÚÒ»Ðв»ÒÆ£¬Ö®ºóÿÐÐÒÀ´ÎÒƶ¯1¡¢2¡¢3λ{h=LeftMove(sta.a[i],i);//×óÒƲÙ×÷for(j=0;jM;j++){sta2.a[i][j]=*(h+j);}}free(h);returnsta2;}