C++实现AES算法
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AES.h
#pragma once#include"stdafx.h"#define AES_KEY_ROW_NUMBER 4#define AES_KEY_COLUMN_NUMBER 4#define AES_ROUND_COUNT 10class AES{public:AES(void);AES(BYTE* key);virtual ~AES(void);void Encrypt(BYTE *, BYTE *,size_t);void Decrypt(BYTE *, BYTE *,size_t);private:BYTE swapbox[11][4][4];BYTE* Cipher(BYTE* input);BYTE* InvCipher(BYTE* input);BYTE* Cipher(void * input, size_t length);BYTE* InvCipher(void * input, size_t length);void KeyExpansion(BYTE* key, BYTE w[][4][AES_KEY_COLUMN_NUMBER]);BYTE FFmul(BYTE a, BYTE b);void SubBytes(BYTE state[][AES_KEY_COLUMN_NUMBER]);void ShiftRows(BYTE state[][AES_KEY_COLUMN_NUMBER]);void MixColumns(BYTE state[][AES_KEY_COLUMN_NUMBER]);void AddRoundKey(BYTE state[][AES_KEY_COLUMN_NUMBER], BYTE k[][AES_KEY_COLUMN_NUMBER]);void InvSubBytes(BYTE state[][AES_KEY_COLUMN_NUMBER]);void InvShiftRows(BYTE state[][AES_KEY_COLUMN_NUMBER]);void InvMixColumns(BYTE state[][AES_KEY_COLUMN_NUMBER]);};AES.CPP
#include"stdafx.h"#include"AES.h"#include<stdlib.h>#include<memory.h>//permuteboxstatic unsigned char permutebox[] ={ /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76, /*0*/0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0, /*1*/0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15, /*2*/0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75, /*3*/0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84, /*4*/0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf, /*5*/0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8, /*6*/0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2, /*7*/0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73, /*8*/0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb, /*9*/0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79, /*a*/0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08, /*b*/0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a, /*c*/0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e, /*d*/0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf, /*e*/0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16 /*f*/};//inversepermutationboxstaticunsigned char inversepermutationbox[]= { /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb, /*0*/0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb, /*1*/0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e, /*2*/0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25, /*3*/0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92, /*4*/0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84, /*5*/0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06, /*6*/0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b, /*7*/0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73, /*8*/0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e, /*9*/0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b, /*a*/0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4, /*b*/0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f, /*c*/0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef, /*d*/0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61, /*e*/0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d /*f*/}; AES::AES(void){}AES::AES(unsigned char* key) {KeyExpansion(key, swapbox);}AES::~AES(void){}/************************************************************************//* create a Encrypt method *//* param : data encrypt data *//* param :encryptArrayencryptArray *//* param :len encrypt data length *//* return : void *//************************************************************************/void AES::Encrypt(unsigned char* data ,unsigned char * encryptArray,size_t len){memcpy(encryptArray,data,len);Cipher((void *)encryptArray,len);}/************************************************************************//* create a Decrypt method *//* param : data decrypt data *//* param :decryptArraydecryptArray *//* param :len decrypt data length *//* return : void *//************************************************************************/void AES::Decrypt(unsigned char * data,unsigned char * decryptArray,size_t len){memcpy(decryptArray,data,len);InvCipher((void *)decryptArray,len);}/************************************************************************//* create a Cipher method only one time Encrypt *//* param : input input encrypt data *//* return : unsigned char * *//************************************************************************/unsigned char* AES::Cipher(unsigned char* input){unsigned char state[AES_KEY_ROW_NUMBER][AES_KEY_COLUMN_NUMBER];int i,r,c;for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER ;c++){state[r][c] = input[c*AES_KEY_COLUMN_NUMBER+r];}}AddRoundKey(state,swapbox[0]);for(i=1; i<=AES_ROUND_COUNT; i++){SubBytes(state);ShiftRows(state);if(i!=AES_ROUND_COUNT)MixColumns(state);AddRoundKey(state,swapbox[i]);}for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER ;c++){input[c*AES_KEY_COLUMN_NUMBER+r] = state[r][c];}}return input;}/************************************************************************//* create a InvCipher method only one time decrypt *//* param : input input decrypt data *//* return : unsigned char * *//************************************************************************/unsigned char* AES::InvCipher(unsigned char* input){unsigned char state[AES_KEY_ROW_NUMBER][AES_KEY_COLUMN_NUMBER];int i,r,c;for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER ;c++){state[r][c] = input[c*AES_KEY_COLUMN_NUMBER+r];}}AddRoundKey(state, swapbox[10]);for(i=9; i>=0; i--){InvShiftRows(state);InvSubBytes(state);AddRoundKey(state, swapbox[i]);if(i){InvMixColumns(state);}}for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER ;c++){input[c*AES_KEY_COLUMN_NUMBER+r] = state[r][c];}}return input;}/************************************************************************//* Create a specified length of data encryption method *//* param : input input data encryption *//* param : length Input the length of the encrypted data *//* return : unsigned char * *//************************************************************************/unsigned char* AES::Cipher(void * input, size_t length){unsigned char* in = (unsigned char*) input;size_t i;if(!length){while(*(in+length++));in = (unsigned char*) input;}for(i=0; i<length; i+=16){Cipher(in+i);}return (unsigned char*)input;}/************************************************************************//* Create a specified length of InvCipher method *//* param : input input data InvCipher *//* param : length Input the length of the InvCipher data *//* return : unsigned char * *//************************************************************************/unsigned char* AES::InvCipher(void * input, size_t length){unsigned char* in = (unsigned char*) input;size_t i;for(i=0; i<length; i+=16){InvCipher(in+i);}return (unsigned char*)input;}/************************************************************************//*Create key method *//* param : key input data encryption key *//* param :swapbox Conversion of key array *//* return : void *//************************************************************************/void AES::KeyExpansion(unsigned char* key, unsigned char swapbox[][4][4]){int i,j,r,c;unsigned char rc[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){swapbox[0][r][c] = key[r+c*AES_KEY_COLUMN_NUMBER];}}for(i=1; i<=10; i++){for(j=0; j<AES_KEY_COLUMN_NUMBER; j++){unsigned char t[AES_KEY_ROW_NUMBER];for(r=0; r<AES_KEY_ROW_NUMBER; r++){t[r] = j ? swapbox[i][r][j-1] : swapbox[i-1][r][3];}if(j == 0){unsigned char temp = t[0];for(r=0; r<AES_KEY_ROW_NUMBER-1; r++){t[r] = permutebox[t[(r+1)%AES_KEY_ROW_NUMBER]];}t[3] = permutebox[temp];t[0] ^= rc[i-1];}for(r=0; r<AES_KEY_ROW_NUMBER; r++){swapbox[i][r][j] = swapbox[i-1][r][j] ^ t[r];}}}}/************************************************************************//*Create mixed operation method ranks *//* param : a row char *//* param : b column char *//* return : unsigned char *//************************************************************************/unsigned char AES::FFmul(unsigned char a, unsigned char b){unsigned char bw[AES_KEY_ROW_NUMBER];unsigned char res=0;int i;bw[0] = b;for(i=1; i<AES_KEY_ROW_NUMBER; i++){bw[i] = bw[i-1]<<1;if(bw[i-1]&0x80){bw[i]^=0x1b;}}for(i=0; i<AES_KEY_ROW_NUMBER; i++){if((a>>i)&0x01){res ^= bw[i];}}return res;}/************************************************************************//* Create bytes alternatives *//* param : state[][] Byte array alternative *//* return : void *//************************************************************************/void AES::SubBytes(unsigned char state[][AES_KEY_COLUMN_NUMBER]){int r,c;for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){state[r][c] = permutebox[state[r][c]];}}}/************************************************************************//* Create rows transform method *//* param : state[][] line array alternative *//* return : void *//************************************************************************/void AES::ShiftRows(unsigned char state[][AES_KEY_COLUMN_NUMBER]){unsigned char t[AES_KEY_COLUMN_NUMBER];int r,c;for(r=1; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){t[c] = state[r][(c+r)%AES_KEY_COLUMN_NUMBER];}for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){state[r][c] = t[c];}}}/************************************************************************//* Create columns transform method *//* param : state[][] columns array alternative *//* return : void *//************************************************************************/void AES::MixColumns(unsigned char state[][AES_KEY_COLUMN_NUMBER]){unsigned char t[AES_KEY_ROW_NUMBER];int r,c;for(c=0; c< AES_KEY_COLUMN_NUMBER; c++){for(r=0; r<AES_KEY_ROW_NUMBER; r++){t[r] = state[r][c];}for(r=0; r<AES_KEY_ROW_NUMBER; r++){state[r][c] = FFmul(0x02, t[r])^ FFmul(0x03, t[(r+1)%AES_KEY_COLUMN_NUMBER])^ FFmul(0x01, t[(r+2)%AES_KEY_COLUMN_NUMBER])^ FFmul(0x01, t[(r+3)%AES_KEY_COLUMN_NUMBER]);}}}/************************************************************************//*Create round keys plus transform method *//* param : state[][] keys plus array alternative *//* param : k[][] temp array alternative *//* return : void *//************************************************************************/void AES::AddRoundKey(unsigned char state[][AES_KEY_COLUMN_NUMBER], unsigned char k[][AES_KEY_COLUMN_NUMBER]){int r,c;for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){for(r=0; r<AES_KEY_ROW_NUMBER; r++){state[r][c] ^= k[r][c];}}}/************************************************************************//* CreateInvSubBytes alternatives *//* param : state[][] InvSubBytes array alternative *//* return : void *//************************************************************************/void AES::InvSubBytes(unsigned char state[][AES_KEY_COLUMN_NUMBER]){int r,c;for(r=0; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){state[r][c] = inversepermutationbox[state[r][c]];}}}/************************************************************************//* CreateInvShiftRows transform method *//* param : state[][] InvShiftRows array alternative *//* return : void *//************************************************************************/void AES::InvShiftRows(unsigned char state[][AES_KEY_COLUMN_NUMBER]){unsigned char t[AES_KEY_COLUMN_NUMBER];int r,c;for(r=1; r<AES_KEY_ROW_NUMBER; r++){for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){t[c] = state[r][(c-r+AES_KEY_COLUMN_NUMBER)%AES_KEY_COLUMN_NUMBER];}for(c=0; c<AES_KEY_COLUMN_NUMBER; c++){state[r][c] = t[c];}}}/************************************************************************//* CreateInvMixColumns transform method *//* param : state[][] InvMixColumns array alternative *//* return : void *//************************************************************************/void AES::InvMixColumns(unsigned char state[][AES_KEY_COLUMN_NUMBER]){unsigned char t[AES_KEY_ROW_NUMBER];int r,c;for(c=0; c< AES_KEY_COLUMN_NUMBER; c++){for(r=0; r<AES_KEY_ROW_NUMBER; r++){t[r] = state[r][c];}for(r=0; r<AES_KEY_ROW_NUMBER; r++){state[r][c] = FFmul(0x0e, t[r])^ FFmul(0x0b, t[(r+1)%AES_KEY_ROW_NUMBER])^ FFmul(0x0d, t[(r+2)%AES_KEY_ROW_NUMBER])^ FFmul(0x09, t[(r+3)%AES_KEY_ROW_NUMBER]);}}}- C语言实现AES-128 CMAC算法
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