整理的几种AES加解密算法C++源程序.docx
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整理的几种AES加解密算法C++源程序.docx
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整理的几种AES加解密算法C++源程序
实验报告
一、实验目的
学习AES加密的方法。
二、实验内容与设计思想
编写AES加密解密算法,并测试。
三、实验使用环境
操作系统:
MicrosoftWindows7
编程环境:
VisualC++6.0
四、实验步骤和调试过程
//AES.h#ifndefAES_H_
#defineAES_H#include
#include
usingnamespacestd;
classAES
{
public:
typedefunsignedcharbyte;
staticconstintKEY_SIZE=16;//密钥长度为位staticconstintN_ROUND=11;
byteplainText[16];//明文
bytestate[16];//当前分组。
bytecipherKey[16];//密钥
byteroundKey[N_ROUND][16];//轮密钥
bytecipherText[16];//密文
byteSBox[16][16];//S盒
byteInvSBox[16][16];//逆S盒
voidEncryptionProcess();
voidDecryptionProcess();
voidRound(constint&round);
voidInvRound(constint&round);
voidFinalRound();
voidInvFinalRound();
voidKeyExpansion();
voidAddRoundKey(constint&round);
voidSubBytes();
voidInvSubBytes();
voidShiftRows();
voidInvShiftRows();
voidMixColumns();
voidInvMixColumns();
voidBuildSBox();
voidBuildInvSBox();
voidInitialState(constbyte*text);
voidInitialCipherText();
voidInitialplainText();
byteGFMultplyByte(constbyte&left,constbyte&right);
constbyte*GFMultplyBytesMatrix(constbyte*left,constbyte*right);public:
AES();
constbyte*Cipher(constbyte*text,constbyte*key,constint&keySize);constbyte*InvCipher(constbyte*text,constbyte*key,constint&keySize);};
voidAES:
:
EncryptionProcess(){//加密过程
InitialState(plainText);
KeyExpansion();//密钥扩展
AddRoundKey(0);//轮密钥加
for(inti=1;i Round(i); } FinalRound(); InitialCipherText(); } voidAES: : DecryptionProcess() {//解密过程 InitialState(cipherText); KeyExpansion(); InvFinalRound(); for(inti=N_ROUND-2;i>0;--i){ InvRound(i); } AddRoundKey(0); InitialplainText(); } voidAES: : Round(constint&round) {//正常轮 SubBytes(); ShiftRows(); MixColumns(); AddRoundKey(round); } voidAES: : InvRound(constint&round) {//正常轮的逆 AddRoundKey(round); InvMixColumns(); InvShiftRows(); InvSubBytes(); voidAES: : FinalRound() {//最后轮 SubBytes();ShiftRows();AddRoundKey(N_ROUND-1); } voidAES: : InvFinalRound() {//最后轮的逆AddRoundKey(N_ROUND-1);InvShiftRows(); InvSubBytes(); } voidAES: : KeyExpansion() {//密钥扩展 constbytercon[N_ROUND][4]={{0x00,0x00,0x00,0x00},{0x01,0x00,0x00,0x00},{0x02,0x00,0x00,0x00},{0x04,0x00,0x00,0x00},{0x08,0x00,0x00,0x00},{0x10,0x00,0x00,0x00},{0x20,0x00,0x00,0x00},{0x40,0x00,0x00,0x00},{0x80,0x00,0x00,0x00},{0x1b,0x00,0x00,0x00},{0x36,0x00,0x00,0x00}};for(inti=0;i<16;++i){ roundKey[0][i]=cipherKey[i]; for(inti=0;i<4;++i) {//roundKey[0][16]为cipherKey的转置矩阵 for(intj=0;j<4;++j) { roundKey[0][4*i+j]=cipherKey[4*j+i]; } } for(introundIndex=1;roundIndex { byterotWord[4]={0x00}; rotWord[0]=roundKey[roundIndex-1][3]; rotWord[1]=roundKey[roundIndex-1][7]; rotWord[2]=roundKey[roundIndex-1][11]; rotWord[3]=roundKey[roundIndex-1][15];std: : swap : swap : swap for(inti=0;i<4;++i) { rotWord[i]=SBox[rotWord[i]>>4][rotWord[i]&0x0f]; roundKey[roundlndex][4*i]=roundKey[roundlndex-1][4*i]ArotWord[i]arcon[roundlndex][i]; } for(intj=1;j<4;++j) { for(inti=0;i<4;++i) { roundKey[roundlndex][4*i+j]=roundKey[roundlndex-1][4*i+j]AroundKey[roundlndex][4*i+j-1]; } } } } voidAES: : AddRoundKey(constint&round) {//轮密钥加 for(inti=0;i<16;++i) {//利用当前分组state和第round组扩展密钥进行按位异或state[i]A=roundKey[round][i]; } } voidAES: : SubBytes() {//字节代换 for(inti=0;i<16;++i) { state[i]=SBox[state[i]>>4][state[i]&0x0f]; } } voidAES: : InvSubBytes() {//逆字节代换 for(inti=0;i<16;++i) { state[i]=InvSBox[state[i]>>4][state[i]&0x0f]; } } voidAES: : ShiftRows() {//行变换 //state第一行保持不变 //Donothing. //state第二行循环左移一个字节 std: : swap std: : swap std: : swap //state第三行循环左移两个字节 std: : swap std: : swap : swap : swap : swap } voidAES: : InvShiftRows() {//行变换反演 //state第一行保持不变 //Donothing. //state第二行循环右移一个字节std: : swap : swap : swap //state第三行循环右移两个字节std: : swap : swap //state第三行循环右移三个字节std: : swap : swap : swap } voidAES: : MixColumns() {//列混淆 bytematrix[4][4]={ {0x02,0x03,0x01,0x01}, {0x01,0x02,0x03,0x01}, {0x01,0x01,0x02,0x03}, {0x03,0x01,0x01,0x02}}; constbyte*temp=GFMultplyBytesMatrix((byte*)matrix,state);for(inti=0;i<16;++i) { state[i]=temp[i]; }delete[]temp; }voidAES: : InvMixColumns() {//列混淆反演 bytematrix[4][4]={ {0x0e,0x0b,0x0d,0x09}, {0x09,0x0e,0x0b,0x0d}, {0x0d,0x09,0x0e,0x0b}, {0x0b,0x0d,0x09,0x0e}}; constbyte*temp=GFMultplyBytesMatrix((byte*)matrix,state);for(inti=0;i<16;++i) { state[i]=temp[i]; } delete[]temp; } voidAES: : BuildSBox() {//构建S盒 bytebox[16][16]= { /*0123456789abcdef*/ /*0*/{0x63,0x7c,0x77,0x7b,0xf2,0x6b,0x6f,0xc5,0x30,0x01,0x67,0x2b,0xfe,0xd7,0xab,0x76}, /*1*/{0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0}, /*2*/{0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15}, /*3*/{0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75}, /*4*/{0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84}, /*5*/{0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf}, /*6*/{0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8}, /*7*/{0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2}, /*8*/{0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73}, /*9*/{0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb}, /*a*/{0xe0,0x32,0x3a,0x0a,0x49,0x06,0x24,0x5c,0xc2,0xd3,0xac,0x62,0x91,0x95,0xe4,0x79}, /*b*/{0xe7,0xc8,0x37,0x6d,0x8d,0xd5,0x4e,0xa9,0x6c,0x56,0xf4,0xea,0x65,0x7a,0xae,0x08}, /*c*/{0xba,0x78,0x25,0x2e,0x1c,0xa6,0xb4,0xc6,0xe8,0xdd,0x74,0x1f,0x4b,0xbd,0x8b,0x8a}, /*d*/{0x70,0x3e,0xb5,0x66,0x48,0x03,0xf6,0x0e,0x61,0x35,0x57,0xb9,0x86,0xc1,0x1d,0x9e}, /*e*/{0xe1,0xf8,0x98,0x11,0x69,0xd9,0x8e,0x94,0x9b,0x1e,0x87,0xe9,0xce,0x55,0x28,0xdf}, /*f*/{0x8c,0xa1,0x89,0x0d,0xbf,0xe6,0x42,0x68,0x41,0x99,0x2d,0x0f,0xb0,0x54,0xbb,0x16} }; for(inti=0;i<16;++i) { for(intj=0;j<16;++j) { SBox[i][j]=box[i][j]; } } } voidAES: : BuildInvSBox() {//构建逆S盒 bytebox[16][16]= { /*0123456789abcdef*/ /*0*/{0x52,0x09,0x6a,0xd5,0x30,0x36,0xa5,0x38,0xbf,0x40,0xa3,0x9e,0x81,0xf3,0xd7,0xfb}, /*1*/{0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb}, /*2*/{0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e}, /*3*/{0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25}, /*4*/{0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92}, /*5*/{0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84}, /*6*/{0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06}, /*7*/{0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b}, /*8*/{0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73}, /*9*/{0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e}, /*a*/{0x47,0xf1,0x1a,0x71,0x1d,0x29,0xc5,0x89,0x6f,0xb7,0x62,0x0e,0xaa,0x18,0xbe,0x1b}, /*b*/{0xfc,0x56,0x3e,0x4b,0xc6,0xd2,0x79,0x20,0x9a,0xdb,0xc0,0xfe,0x78,0xcd,0x5a,0xf4}, /*c*/{0x1f,0xdd,0xa8,0x33,0x88,0x07,0xc7,0x31,0xb1,0x12,0x10,0x59,0x27,0x80,0xec,0x5f}, /*d*/{0x60,0x51,0x7f,0xa9,0x19,0xb5,0x4a,0x0d,0x2d,0xe5,0x7a,0x9f,0x93,0xc9,0x9c,0xef}, /*e*/{0xa0,0xe0,0x3b,0x4d,0xae,0x2a,0xf5,0xb0,0xc8,0xeb,0xbb,0x3c,0x83,0x53,0x99,0x61}, /*f*/{0x17,0x2b,0x04,0x7e,0xba,0x77,0xd6,0x26,0xe1,0x69,0x14,0x63,0x55,0x21,0x0c,0x7d} }; for(inti=0;i<16;++i) { for(intj=0;j<16;++j) { InvSBox[i][j]=box[i][j]; } } } voidAES: : InitialState(constbyte*text) {//state初始时候为明(密)文矩阵的转置矩阵 for(inti=0;i<4;++i) {//转置text存放在state中 for(intj=0;j<4;++j) {state[4*i+j]=text[4*j+i]; } } } voidAES: : InitialCipherText() {//state被复制到输出矩阵中 for(inti=0;i<4;++i) {//转置state存放在cipherText中 for(intj=0;j<4;++j) {cipherText[4*i+j]=state[4*j+i]; } voidAES: : InitialplainText() {//state被复制到输入矩阵中 for(inti=0;i<4;++i) {//转置state存放在plainText中 for(intj=0;j<4;++j) {plainText[4*i+j]=state[4*j+i]; } } } AES: : byteAES: : GFMultplyByte(constbyte&left,constbyte&right) {//有限域GF(2A8)上的乘法 bytetemp[8]; bitset<8>bits((unsignedIong)right);//把right化为个二进制位存放在bits中 temp[0]=left; for(inti=1;i<8;++i) { if(temp[i-1]
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