1、AES加密解密算法集美大学计算机工程学院实验报告课程名称：班级：实验成绩：指导教师：姓名：实验项目名称：AES加密解密算法学号：上机实践日期：实验项目编号：组号：上机实践时间：2学时一、 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： Microsoft Win dows 7编程环境：Visual C+ 6.0四、 实验步骤和调试过程/ AES.h#ifndef AES_H_#defi ne AES_H_#in clude #in clude using n amespace std;class AESpublic:typed
2、ef un sig ned char byte;static const int KEY_SIZE = 16; / 密钥长度为位static con st int N_ROUND = 11;byte plai nText16; / 明文byte state16; / 当前分组。byte cipherKey16; / 密钥byte roun dKeyN_ROUND16; / 轮密钥byte cipherText16; / 密文byte SBox1616; / S 盒byte In vSBox1616; / 逆 S盒void En cryptio nProcess();void Decryptio
3、 nProcess();void Roun d(c onst int& roun d);void In vRo un d(c onst int& roun d);void Fin aIRo un d();void InvFin aIRo un d();void KeyExpa nsion();void AddRo un dKey(c onst int& roun d);void SubBytes();void In vSubBytes();void ShiftRows();void In vShiftRows();void MixColu mn s();void Inv MixColum ns
4、();void BuildSBox();void BuildI nv SBox();void In itialState(co nst byte* text);void In itialCipherText();void In itialplai nText();byte GFMultplyByte(co nst byte & left, const byte & right);const byte* GFMultplyBytesMatrix(co nst byte* left, con st byte* right); public:AES();const byte* Cipher(c on
5、st byte* text, const byte* key, const int& keySize);const byte* Inv Cipher(c onst byte* text, const byte* key, const int& keySize); ;void AES:E ncryptio nProcess() / 加密过程In itialState(plai nText);KeyExpa nsio n(); / 密钥扩展AddRou ndKey(O); / 轮密钥加for(i nt i = 1; i 0 ; -i)In vRou nd(i);AddRou ndKey(O);In
6、 itialplai nText();void AES:Ro un d(c onst int& round) / 正常轮SubBytes();ShiftRows();MixColu mn s();AddRou ndKey(rou nd);void AES:I nvRo un d(c onst int& round) / 正常轮的逆AddRou ndKey(rou nd);Inv MixColu mn s();In vShiftRows();In vSubBytes();void AES:Fi nalRou nd() / 最后轮SubBytes();ShiftRows();AddRo un dK
7、ey(N_ROUND - 1);void AES:I nvFi nalRou nd() / 最后轮的逆AddRo un dKey(N_ROUND - 1);In vShiftRows();In vSubBytes();void AES:KeyExpa nsion() / 密钥扩展con st byte rconN _ROUND4 = 0x00, 0x00, 0x00, 0x00,0x01, 0x00, 0x00, 0x00,0x02, 0x00, 0x00, 0x00,0x04, 0x00, 0x00, 0x00,0x08, 0x00, 0x00, 0x00,0x10, 0x00, 0x00,
8、 0x00,0x20, 0x00, 0x00, 0x00,0x40, 0x00, 0x00, 0x00,0x80, 0x00, 0x00, 0x00,0x1b, 0x00, 0x00, 0x00,0x36, 0x00, 0x00, 0x00 ;for(i nt i = 0; i 16; +i)roun dKey0i = cipherKeyi;for(i nt i = 0; i 4; +i) / roundKey016 为cipherKey 的转置矩阵for(i nt j = 0; j 4; +j)roun dKey04*i + j = cipherKey4*j + i;for(i nt rou
9、 ndlndex = 1; roundin dex N_ROUND; +rou ndln dex)byte rotWord4 = 0x00;rotWord0 = roun dKeyrou ndl ndex - 13;rotWord1 = roun dKeyrou ndl ndex - 17;rotWord2 = roun dKeyrou ndl ndex - 111; rotWord3 = roun dKeyrou ndl ndex - 115; std:swap(rotWord0, rotWord1); std:swap(rotWord1, rotWord2); std:swap(rotWo
10、rd2, rotWord3);for(i nt i = 0; i 4 rotWordi & 0x0f ;roun dKeyrou ndl ndex4*i = roun dKeyrou ndl ndex - 14*i A rotWordi a rcon rou ndln dexi;for(i nt j = 1; j 4; +j)for(i nt i = 0; i 4; +i)roun dKeyrou ndl ndex4*i + j = roun dKeyrou ndln dex - 14*i + j a roun dKeyrou ndln dex4*i + j - 1;void AES:AddR
11、ou ndKey(co nst int& round) / 轮密钥加for(i nt i = 0; i 16; +i) II 利用当前分组state和第round组扩展密钥进行按位异或statei A= roun dKeyr oun di;void AES:SubBytes() / 字节代换for(i nt i = 0; i 4 statei & OxOf ;void AES:I nvSubBytes() / 逆字节代换for(i nt i = 0; i 4 statei & 0x0f ;void AES:ShiftRows() / 行变换/state 第一行保持不变/ Do nothing.
12、/state 第二行循环左移一个字节std:swap(state4, state5);std:swap(state5, state6);std:swap(state6, state7);/state 第三行循环左移两个字节std:swap(state8, state10);std:swap(state9, state11);/state 第三行循环左移三个字节std:swap(state14, state15);std:swap(state13, state14);std:swap(state12, state13);void AES:I nvShiftRows() / 行变换反演/state
13、 第一行保持不变/ Do nothing./state 第二行循环右移一个字节std:swap(state6, state7);std:swap(state5, state6);std:swap(state4, state5);/state 第三行循环右移两个字节std:swap(state9, state11);std:swap(state8, state10);/state 第三行循环右移三个字节std:swap(state12, state13);std:swap(state13, state14);std:swap(state14, state15);void AES:MixColum
14、 ns() / 列混淆byte matrix44 = 0x02, 0x03, 0x01,0x01,0x01, 0x02, 0x03, 0x01,0x01, 0x01,0x02, 0x03,0x03, 0x01,0x01,0x02;const byte* temp = GFMultplyBytesMatrix(byte*)matrix, state);for(i nt i = 0; i 16; +i)statei = tempi;delete temp;void AES:I nv MixColum ns() / 列混淆反演byte matrix44 = 0x0e, 0x0b, 0x0d, 0x0
15、9,0x09, 0x0e, 0x0b, 0x0d,0x0d, 0x09, 0x0e, 0x0b,0x0b, 0x0d, 0x09, 0x0e ;const byte* temp = GFMultplyBytesMatrix(byte*)matrix, state);for(i nt i = 0; i 16; +i)statei = tempi;delete temp;void AES:BuildSBox() / 构建S盒byte box1616=/* 0 1 2 3 4 5 6 7 8 9 ab c d e f */1*0*1 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6
16、b, 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, 0x
17、96, 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,
18、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,
19、 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, 0x1
20、c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8 b, 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, 0xb
21、f, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16;for(i nt i = 0; i 16; +i)for(i nt j = 0; j 16; +j)SBoxij = boxij;void AES:Buildl nvSBox() / 构建逆S盒byte box1616=/* 0 1 2 3 4 5 6 7 8 9 ab c d e f */*0*/ 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81,0xf3
22、, 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, 0
23、x8b, 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
24、, 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,
25、 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,
26、0x80, 0xec, 0x5f,/*d*/ 0x60, 0x51,0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7 a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,/*e*/ 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,/*f*/ 0x17, 0x2 b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x
27、55, 0x21,0x0c, 0x7d;for(i nt i = 0; i 16; +i)for(i nt j = 0; j 16; +j)Inv SBoxij = boxij;void AES:I ni tialState(co nst byte* text) / state 初始时候为明(密)文矩阵的转置矩阵for(i nt i = 0; i 4; +i) / 转置text存放在state中for(i nt j = 0; j 4; +j)state4*i + j = text4*j + i;void AES:I nitialCipherText() / state 被复制到输出矩阵中for(i nt i = 0; i 4; +i) / 转置state存放在cipherText中for(i nt j = 0; j 4; +j) cipherText4*i + j = state4*j + i;void AES:I nitialplai nText() / state 被复制到输入矩阵中for(i nt i = 0; i 4; +i) / 转置state存放在plainText中for(i nt j = 0; j 4
