AES加密/解密算法 128bit、192bit、256bit秘钥 支持CBC 可直接在MCU上运行
来源：互联网 发布：java函数命名规范 编辑：程序博客网 时间：2024/05/22 16:07
全为C语言编写，可直接在MCU上运行，已测试正常，资源已尽力做到最小
一、C文件
/* AES 加密 解密 数据块 固定为16字节 秘钥有 128bit（16字节） 192bit（24字节） 256bit（32字节） */#include "aes.h"//轮秘钥缓存 原始秘钥 + 多个子秘钥static unsigned char Round_Key[256];/** S-box transformation table S盒数据 在字节代替中需要使用*/const unsigned char aes_s_box[16][16] = {// 0 1 2 3 4 5 6 7 8 9 a b c d e f0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, // 00xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, // 10xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, // 20x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, // 30x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, // 40x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, // 50xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, // 60x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, // 70xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, // 80x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, // 90xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, // a0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, // b0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, // c0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, // d0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, // e0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };// f/** Inverse S-box transformation table S盒的逆 在字节代替中需要使用*/const unsigned char aes_inv_s_box[16][16] = {// 0 1 2 3 4 5 6 7 8 9 a b c d e f0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, // 00x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, // 10x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, // 20x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, // 30x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, // 40x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, // 50x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, // 60xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, // 70x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, // 80x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, // 90x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, // a0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, // b0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, // c0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, // d0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, // e0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };// f//列混淆 计算矩阵 列混淆矩阵在左边 乘以明文 即列混淆矩阵的行乘以明文矩阵的列const unsigned char aes_MixColumns[4][4] = {// 0 1 2 3 0x02, 0x03, 0x01, 0x01, //00x01, 0x02, 0x03, 0x01, //10x01, 0x01, 0x02, 0x03, //20x03, 0x01, 0x01, 0x02, //3};//列混淆 计算矩阵的逆const unsigned char aes_invMixColumns[4][4] = {// 0 1 2 3 0x0E, 0x0B, 0x0D, 0x09, //00x09, 0x0E, 0x0B, 0x0D, //10x0D, 0x09, 0x0E, 0x0B, //20x0B, 0x0D, 0x09, 0x0E, //3};//轮常数 子秘钥G函数用到 后一个数据为 前一个数据在GF(28)域上乘2const unsigned char aes_Rcon[14] = { 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36, 0x6c, 0xd8, 0xab, 0x4d };//AES字节替代函数void Aes_SubBytes(unsigned char *Byte_IN_OUT, unsigned int Len){unsigned char S_X, S_Y;unsigned int Count = 0;for (Count = 0; Count < Len; Count++){S_X = Byte_IN_OUT[Count] >> 4; //得到高4位的值S_Y = Byte_IN_OUT[Count] & 0x0f;Byte_IN_OUT[Count] = aes_s_box[S_X][S_Y]; //得到对应的值}}//AES 逆向字节替代函数void Aes_invSubBytes(unsigned char *Byte_IN_OUT, unsigned int Len){unsigned char S_X, S_Y;unsigned int Count = 0;for (Count = 0; Count < Len; Count++){S_X = Byte_IN_OUT[Count] >> 4; //得到高4位的值S_Y = Byte_IN_OUT[Count] & 0x0f;Byte_IN_OUT[Count] = aes_inv_s_box[S_X][S_Y]; //得到对应的值}}//数组指定行左移 指定字节//SrcInOut： 数组输入及结果输出 必须为16字节 且内部分解成4X4矩阵//Rows： 数组第几行 0~3//Number: 左移字节数 1~3void ShiftByteNumRows(unsigned char *SrcInOut, unsigned char Rows, unsigned char Number){unsigned char Data[10]; //用于移位数据备份unsigned char Count;if ((Number > 10) || (Number == 0)){return;}for (Count = 0; Count < Number; Count++) //先把要左移溢出的数据备份 {Data[Count] = SrcInOut[Rows + 4 * Count];}for (Count = 0; Count < (4 - Number); Count++) //把后面的数据左移{SrcInOut[Rows + 4 * Count] = SrcInOut[Rows + 4 * (Number + Count)];}for (Count = 0; Count < Number; Count++) //把后面的数据左移{SrcInOut[Rows + 4 * ((4 - Number) + Count)] = Data[Count];}}//行移动void Aes_ShiftRows(unsigned char *SrcInOut){//const unsigned char Shitftable[4] = { 0, 1, 2, 3 };//ShiftByteNumRows(SrcInOut, 4, 0); //第一行不移位ShiftByteNumRows(SrcInOut, 1, 1); //左移1个字节ShiftByteNumRows(SrcInOut, 2, 2); //左移2个字节ShiftByteNumRows(SrcInOut, 3, 3); //左移3个字节}//逆向行移动void Aes_invShiftRows(unsigned char *SrcInOut){//const unsigned char Shitftable[4] = { 0, 1, 2, 3 };//ShiftByteNumRows(SrcInOut, 4, 0); //第一行不移位ShiftByteNumRows(SrcInOut, 1, 3); //之前左移1个字节 逆向则为左移3个字节ShiftByteNumRows(SrcInOut, 2, 2); //左移2个字节 逆向则为左移2个字节ShiftByteNumRows(SrcInOut, 3, 1); //左移3个字节 逆向则为左移1个字节}//计算两个数在GF（28）域上的乘法unsigned char Get_Calculate_GF28(unsigned char data0, unsigned char data1){unsigned char Val = 0;unsigned char Count = 0;//把被乘数分成单独bit位或成的结果 比如 0x03*0x14 =0x03*00010100 =0x03*0x04 ^ 0x03*0x10 =((0x03*2)*2) ^ .... = 0x0c ^.... for (Count = 0; Count < 8; Count++){if (data1 & 0x01) //判断当前{Val ^= data0;}data0 = (data0 << 1) ^ ((data0 & 0x80) ? 0x1b : 0); //每循环一次乘法的值变成两倍data1 >>= 1; //扫描下一位}return Val;}//列混淆void Aes_MixColumns(unsigned char *SrcInOut){unsigned char Data_buff[4]; //一列数据备份unsigned char Calculate_val[4]; //计算后的值unsigned char Count; //列计数for (Count = 0; Count < 4; Count++) //4 列{memcpy(Data_buff, &SrcInOut[Count * 4], 4); //拷贝一列的数据//执行 GF（28）域上的乘法Calculate_val[0] = Get_Calculate_GF28(Data_buff[0], aes_MixColumns[0][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_MixColumns[0][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_MixColumns[0][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_MixColumns[0][3]);Calculate_val[1] = Get_Calculate_GF28(Data_buff[0], aes_MixColumns[1][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_MixColumns[1][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_MixColumns[1][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_MixColumns[1][3]);Calculate_val[2] = Get_Calculate_GF28(Data_buff[0], aes_MixColumns[2][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_MixColumns[2][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_MixColumns[2][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_MixColumns[2][3]);Calculate_val[3] = Get_Calculate_GF28(Data_buff[0], aes_MixColumns[3][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_MixColumns[3][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_MixColumns[3][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_MixColumns[3][3]);memcpy(&SrcInOut[Count * 4], Calculate_val, 4); //拷贝结果}}//逆向列混淆void Aes_invMixColumns(unsigned char *SrcInOut){unsigned char Data_buff[4]; //一列数据备份unsigned char Calculate_val[4]; //计算后的值unsigned char Count; //列计数for (Count = 0; Count < 4; Count++) //4 列{memcpy(Data_buff, &SrcInOut[Count * 4], 4); //拷贝一列的数据//执行 GF（28）域上的乘法Calculate_val[0] = Get_Calculate_GF28(Data_buff[0], aes_invMixColumns[0][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_invMixColumns[0][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_invMixColumns[0][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_invMixColumns[0][3]);Calculate_val[1] = Get_Calculate_GF28(Data_buff[0], aes_invMixColumns[1][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_invMixColumns[1][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_invMixColumns[1][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_invMixColumns[1][3]);Calculate_val[2] = Get_Calculate_GF28(Data_buff[0], aes_invMixColumns[2][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_invMixColumns[2][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_invMixColumns[2][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_invMixColumns[2][3]);Calculate_val[3] = Get_Calculate_GF28(Data_buff[0], aes_invMixColumns[3][0]) ^ Get_Calculate_GF28(Data_buff[1], aes_invMixColumns[3][1]) ^ \Get_Calculate_GF28(Data_buff[2], aes_invMixColumns[3][2]) ^ Get_Calculate_GF28(Data_buff[3], aes_invMixColumns[3][3]);memcpy(&SrcInOut[Count * 4], Calculate_val, 4); //拷贝结果}}//AES 秘钥扩展中 的G函数//先移位 再S盒替代 再与轮常数 异或void Aes_G_function(unsigned char *Wjbuff_IN_OUT, unsigned char Count_j){unsigned char temp;//左移1个字节temp = Wjbuff_IN_OUT[0];memcpy(Wjbuff_IN_OUT, &Wjbuff_IN_OUT[1], 3);Wjbuff_IN_OUT[3] = temp;Aes_SubBytes(Wjbuff_IN_OUT, 4); //S盒替换Wjbuff_IN_OUT[0] ^= aes_Rcon[Count_j]; //与常数轮 异或Wjbuff_IN_OUT[1] ^= 0x00;Wjbuff_IN_OUT[2] ^= 0x00;Wjbuff_IN_OUT[3] ^= 0x00;}void Aes_Bytes_Xor(unsigned char *Byte_IO, unsigned char *Byte_I, unsigned int Len){while (Len--){*Byte_IO ^= *Byte_I;Byte_IO++;Byte_I++;}}//秘钥扩展//KeySize: 秘钥大小 单位：字节 只能为16 24 32 void Key_Schedule(unsigned char *KeyData_In, unsigned char KeySize){unsigned char Datatemp[4];unsigned char Datatemp0[4]; //计算的结果unsigned char Count;unsigned char Round_Count; //轮计数 最大为14*4 = 56if (KeySize == 16) //如果秘钥为16字节{Round_Count = 10; //填充轮数}else if (KeySize == 24){Round_Count = 12; //填充轮数}else if (KeySize == 32){Round_Count = 14; //填充轮数}else //错误情况{return;}//拷贝原始秘钥 最后一列数据memcpy(Datatemp0, &KeyData_In[KeySize - 4], 4);//每轮需要一个子秘钥 每个子秘钥16字节 每次循环产生4个字节 即循环4次才产生一个字节秘钥 //当原始秘钥大于16字节时 多余16字节的数据为子秘钥数据 比如24字节秘钥 则原始秘钥中的后8个字节即为第一个子秘钥的前8个字节数据 32字节秘钥的后16字节数据 为第一个子秘钥数据//数量 * 4 则为原始秘钥不填充字节情况 但是当原始大于16字节时 需要考虑原始秘钥用于填充子秘钥情况for (Count = 0; Count < (Round_Count * 4 - ((KeySize - 16) / 8) * 2)/*减去原始秘钥填充子秘钥数据长度*/; Count++){//列数如果为4或者6或者8的整数倍（取决于秘钥大小） 需要执行G函数 其它列只需要与对应列异或 及原秘钥矩阵列 与计算结果矩阵列异或if ((Count % (KeySize / 4)) == 0) //轮数为4的倍数 则其值 Wi = W(i-4) ^ G( W(i-1) ){Aes_G_function(Datatemp0, Count / (KeySize / 4)); //执行G函数 执行的结果保存在原数组中}else{//测试发现 上次计算的结果即为需要异或的数据 固没有重新读取数据if (((Count % (KeySize / 4)) == 4) && (KeySize == 32)) //在32字节秘钥下 如果当前轮数为4的倍数 则要经过一次S盒替代{Aes_SubBytes(Datatemp0, 4); //S盒替换}}memcpy(Datatemp, &KeyData_In[Count * 4], 4); //得到指定一列的数据 Aes_Bytes_Xor(Datatemp0, Datatemp, 4); //把两列数据异或memcpy(&KeyData_In[KeySize + Count * 4], Datatemp0, 4); //拷贝结果}}//创建轮秘钥 128bit 秘钥 为10个子秘钥 192bit秘钥为 12个子秘钥 256bit为14个子秘钥 每个子秘钥固定为16 //KeyByteSize: 秘钥字节数 只能为 16 24 32 void Aes_Key_Schedule_Create(unsigned char *KeyData, unsigned char KeyByteSize){memcpy(Round_Key, KeyData, KeyByteSize); //把原始秘钥拷贝 拷贝到全局变量//开始根据原始秘钥扩展 子秘钥Key_Schedule(Round_Key, KeyByteSize); //产生轮秘钥}//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key128bit: 秘钥 128bit 16字节void Aes_IV_key128bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key128bit){unsigned char Count;if (key128bit == NULL){return;}if (IV_IN_OUT != NULL) //如果有向量输入 则密文先与向量异或{Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16);}Aes_Key_Schedule_Create(key128bit, 16); //生成轮秘钥 共11轮 长度为 16字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[0], 16); //把第0轮秘钥与明文异或for (Count = 1; Count < 10; Count++) //运行9轮 第10没有列混淆 固单独处理{Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_MixColumns(State_IN_OUT);//列混淆Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或}//第10轮----------------------------Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_Bytes_Xor(State_IN_OUT, &Round_Key[16 * Count], 16); //异或轮秘钥if (IV_IN_OUT != NULL) //把密文拷贝到向量{memcpy(IV_IN_OUT, State_IN_OUT,16);}}//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key128bit: 秘钥 128bit 16字节void Aes_IV_key128bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key128bit){unsigned char Count;unsigned char Temp[16]; //原密文数据缓存if (key128bit == NULL){return;}if (IV_IN_OUT!=NULL){memcpy(Temp, State_IN_OUT, 16); //拷贝原始密文}Aes_Key_Schedule_Create(key128bit, 16); //生成轮秘钥 共11轮 长度为 16字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[10 * 16], 16); //把第10轮秘钥与密文文异或Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代for (Count = 9; Count > 0; Count--) //运行9轮 第10没有列混淆 固单独处理{Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或Aes_invMixColumns(State_IN_OUT); //逆向列混淆Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代}//第10轮----------------------------Aes_Bytes_Xor(State_IN_OUT, &Round_Key[16 * Count], 16); //异或轮秘钥 此处异或为原始秘钥if (IV_IN_OUT != NULL){Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16); //解密后的结果与向量异或memcpy(IV_IN_OUT, Temp, 16); //拷贝原始密文到向量缓存}}//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key192bit: 秘钥 192bit 24字节void Aes_IV_key192bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key192bit){unsigned char Count;if (key192bit == NULL){return;}if (IV_IN_OUT != NULL) //如果有向量输入 则密文先与向量异或{Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16);}Aes_Key_Schedule_Create(key192bit, 24); //生成轮秘钥 共11轮 长度为 24字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[0], 16); //把第0轮秘钥与明文异或for (Count = 1; Count < 12; Count++) //运行11轮 第12没有列混淆 固单独处理{Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_MixColumns(State_IN_OUT);//列混淆Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或}//第10轮----------------------------Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //异或轮秘钥if (IV_IN_OUT != NULL) //把密文拷贝到向量{memcpy(IV_IN_OUT, State_IN_OUT, 16);}}//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key192bit: 秘钥 192bit 24字节void Aes_IV_key192bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key192bit){unsigned char Count;unsigned char Temp[16]; //原密文数据缓存if (key192bit == NULL){return;}if (IV_IN_OUT != NULL){memcpy(Temp, State_IN_OUT, 16); //拷贝原始密文}Aes_Key_Schedule_Create(key192bit, 24); //生成轮秘钥 共12轮 长度为 24字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[12 * 16], 16); //把第12轮秘钥与密文文异或Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代for (Count = 11; Count > 0; Count--) //运行11轮 第12没有列混淆 固单独处理{Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或Aes_invMixColumns(State_IN_OUT); //逆向列混淆Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代}//第12轮----------------------------Aes_Bytes_Xor(State_IN_OUT, &Round_Key[16 * Count], 16); //异或轮秘钥 此处异或为原始秘钥if (IV_IN_OUT != NULL){Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16); //解密后的结果与向量异或memcpy(IV_IN_OUT, Temp, 16); //拷贝原始密文到向量缓存}}//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key256bit: 秘钥 256bit 32字节void Aes_IV_key256bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key256bit){unsigned char Count;if (key256bit == NULL){return;}if (IV_IN_OUT != NULL) //如果有向量输入 则密文先与向量异或{Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16);}Aes_Key_Schedule_Create(key256bit, 32); //生成轮秘钥 共14轮 长度为 32字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[0], 16); //把第0轮秘钥与明文异或for (Count = 1; Count < 14; Count++) //运行13轮 第14没有列混淆 固单独处理{Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_MixColumns(State_IN_OUT);//列混淆Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或}//第14轮----------------------------Aes_SubBytes(State_IN_OUT, 16); //字节替代Aes_ShiftRows(State_IN_OUT); //行移位Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //异或轮秘钥if (IV_IN_OUT != NULL) //把密文拷贝到向量{memcpy(IV_IN_OUT, State_IN_OUT, 16);}}//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key256bit: 秘钥 256bit 32字节void Aes_IV_key256bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key256bit){unsigned char Count;unsigned char Temp[16]; //原密文数据缓存if (key256bit == NULL){return;}if (IV_IN_OUT != NULL){memcpy(Temp, State_IN_OUT, 16); //拷贝原始密文}Aes_Key_Schedule_Create(key256bit, 32); //生成轮秘钥 共11轮 长度为 32字节Aes_Bytes_Xor(State_IN_OUT, &Round_Key[14 * 16], 16); //把第14轮秘钥与密文文异或Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代for (Count = 13; Count > 0; Count--) //运行13轮 第14没有列混淆 固单独处理{Aes_Bytes_Xor(State_IN_OUT, &Round_Key[Count * 16], 16); //与轮秘钥异或Aes_invMixColumns(State_IN_OUT); //逆向列混淆Aes_invShiftRows(State_IN_OUT); //逆向行移位Aes_invSubBytes(State_IN_OUT, 16); //逆向字节替代}//第14轮----------------------------Aes_Bytes_Xor(State_IN_OUT, &Round_Key[16 * Count], 16); //异或轮秘钥 此处异或为原始秘钥if (IV_IN_OUT != NULL){Aes_Bytes_Xor(State_IN_OUT, IV_IN_OUT, 16); //解密后的结果与向量异或memcpy(IV_IN_OUT, Temp, 16); //拷贝原始密文到向量缓存}}二、H文件
#ifndef _AES_H_#define _AES_H_#include "stdlib.h"#include "string.h"//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key128bit: 秘钥 128bit 16字节void Aes_IV_key128bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key128bit);//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key128bit: 秘钥 128bit 16字节void Aes_IV_key128bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key128bit);//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key192bit: 秘钥 192bit 24字节void Aes_IV_key192bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key192bit);//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key192bit: 秘钥 192bit 24字节void Aes_IV_key192bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key192bit);//AES加密 16字节一个数据块//IV_IN_OUT: 向量输入 密文输出//State_IN_OUT： 明文输入 密文输出//key256bit: 秘钥 256bit 32字节void Aes_IV_key256bit_Encrypt(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key256bit);//AES解密 16字节一个数据块//IV_IN_OUT: 向量输入 原密文输出//State_IN_OUT： 密文输入 明文输出//key256bit: 秘钥 256bit 32字节void Aes_IV_key256bit_Decode(unsigned char *IV_IN_OUT, unsigned char *State_IN_OUT, unsigned char *key256bit);#endif
#include "stdio.h"#include "aes.h"//3243f6a8885a308d313198a2e0370734unsigned char state[] = { 0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d, 0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34 };//2b7e151628aed2a6abf7158809cf4f3c 2b7e151628aed2a6unsigned char Cipher_key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };unsigned char Mimes[] = { 0x39, 0x25, 0x84, 0x1d, 0x02, 0xdc, 0x09, 0xfb, 0xdc, 0x11, 0x85, 0x97, 0x19, 0x6a, 0x0b, 0x32 };unsigned char state0[32] = { 0 };unsigned char Cipher_key0[32] = { 0 };void main(void){for (int i = 0; i < 32; i++){state0[i] = 0x11;Cipher_key0[i] = 0x11;}printf("128bit 秘钥 AES加密 解密测试 \r\n");printf("秘钥值：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", Cipher_key0[i]);}printf("\r\n");printf("明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key128bit_Encrypt(NULL, state0, Cipher_key0);printf("密文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key128bit_Decode(NULL, state0, Cipher_key0);printf("解密明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");for (int i = 0; i < 32; i++){state0[i] = 0x85;Cipher_key0[i] = 0x41;}printf("192bit 秘钥 AES加密 解密测试 \r\n");printf("秘钥值：\r\n");for (int i = 0; i < 24; i++){printf("0x%02x ", Cipher_key0[i]);}printf("\r\n");printf("明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key192bit_Encrypt(NULL, state0, Cipher_key0);printf("密文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key192bit_Decode(NULL, state0, Cipher_key0);printf("解密明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");for (int i = 0; i < 32; i++){state0[i] = 0x67;Cipher_key0[i] = 0x51;}printf("256bit 秘钥 AES加密 解密测试 \r\n");printf("秘钥值：\r\n");for (int i = 0; i < 32; i++){printf("0x%02x ", Cipher_key0[i]);}printf("\r\n");printf("明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key256bit_Encrypt(NULL, state0, Cipher_key0);printf("密文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");Aes_IV_key256bit_Decode(NULL, state0, Cipher_key0);printf("解密明文数据为：\r\n");for (int i = 0; i < 16; i++){printf("0x%02x ", state0[i]);}printf("\r\n");getchar();}四、运行结果
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