///'#include //n#include //n//n// SM4 算法的 S 盒//nconst unsigned char SBox[256] = {//n 0xd6, 0x90, 0xe9, 0xfe, 0xcc, 0xe1, 0x3d, 0xb7, 0x16, 0xb6, 0x14, 0xc2, 0x28, 0xfb, 0x2c, 0x05,//n 0x2b, 0x67, 0x9a, 0x76, 0x2a, 0xbe, 0x04, 0xc3, 0xaa, 0x44, 0x13, 0x26, 0x49, 0x86, 0x06, 0x99,//n 0x9c, 0x42, 0x50, 0xf4, 0x91, 0xef, 0x98, 0x7a, 0x33, 0x54, 0x0b, 0x43, 0xed, 0xcf, 0xac, 0x62,//n 0xe4, 0xb3, 0x1c, 0xa9, 0xc9, 0x08, 0xe8, 0x95, 0x80, 0xdf, 0x94, 0xfa, 0x75, 0x8f, 0x3f, 0xa6,//n 0x47, 0x07, 0xa7, 0xfc, 0xf3, 0x73, 0x17, 0xba, 0x83, 0x59, 0x3c, 0x19, 0xe6, 0x85, 0x4f, 0xa8,//n 0x68, 0x6b, 0x81, 0xb2, 0x71, 0x64, 0xda, 0x8b, 0xf8, 0xeb, 0x0f, 0x4b, 0x70, 0x56, 0x9d, 0x35,//n 0x1e, 0x24, 0x0e, 0x5e, 0x63, 0x58, 0xd1, 0xa2, 0x25, 0x22, 0x7c, 0x3b, 0x01, 0x21, 0x78, 0x87,//n 0xd4, 0x00, 0x46, 0x57, 0x9f, 0xd3, 0x27, 0x52, 0x4c, 0x36, 0x02, 0xe7, 0xa0, 0xc4, 0xc8, 0x9e,//n 0xea, 0xbf, 0x8a, 0xd2, 0x40, 0xc7, 0x38, 0xb5, 0xa3, 0xf7, 0xf2, 0xce, 0xf9, 0x61, 0x15, 0xa1,//n 0xe0, 0xae, 0x5d, 0xa4, 0x9b, 0x34, 0x1a, 0x55, 0xad, 0x93, 0x32, 0x30, 0xf5, 0x8c, 0xb1, 0xe3,//n 0x1d, 0xf6, 0xe2, 0x2e, 0x82, 0x66, 0xca, 0x60, 0xc0, 0x29, 0x23, 0xab, 0x0d, 0x53, 0x4e, 0x6f,//n 0xd5, 0xdb, 0x37, 0x45, 0xde, 0xfd, 0x8e, 0x2f, 0x03, 0xff, 0x6a, 0x72, 0x6d, 0x6c, 0x5b, 0x51,//n 0x8d, 0x1b, 0xaf, 0x92, 0xbb, 0xdd, 0xbc, 0x7f, 0x11, 0xd9, 0x5c, 0x41, 0x1f, 0x10, 0x5a, 0xd8,//n 0x0a, 0xc1, 0x31, 0x88, 0xa5, 0xcd, 0x7b, 0xbd, 0x2d, 0x74, 0xd0, 0x12, 0xb8, 0xe5, 0xb4, 0xb0,//n 0x89, 0x69, 0x97, 0x4a, 0x0c, 0x96, 0x77, 0x7e, 0x65, 0xb9, 0xf1, 0x09, 0xc5, 0x6e, 0xc6, 0x84,//n 0x18, 0xf0, 0x7d, 0xec, 0x3a, 0xdc, 0x4d, 0x20, 0x79, 0xee, 0x5f, 0x3e, 0xd7, 0xcb, 0x39, 0x48//n};//n//n// SM4 算法的固定轮秘钥//nconst unsigned int FK[4] = {//n 0xA3B1BAC6, 0x56AA3350, 0x677D9197, 0xB27022DC//n};//n//n// SM4 算法的固定轮常量//nconst unsigned int CK[32] = {//n 0x00070e15, 0x1c232a31, 0x383f464d, 0x545b6269,//n 0x70777e85, 0x8c939aa1, 0xa8afb6bd, 0xc4cbd2d9,//n 0xe0e7eef5, 0xfc030a11, 0x181f262d, 0x343b4249,//n 0x50575e65, 0x6c737a81, 0x888f969d, 0xa4abb2b9,//n 0xc0c7ced5, 0xdce3eaf1, 0xf8ff060d, 0x141b2229,//n 0x30373e45, 0x4c535a61, 0x686f767d, 0x848b9299,//n 0xa0a7aeb5, 0xbcc3cad1, 0xd8dfe6ed, 0xf4fb0209,//n 0x10171e25, 0x2c333a41, 0x484f565d, 0x646b7279//n};//n//n// SM4 算法的非线性变换//nunsigned char S(unsigned char x) {//n return SBox[x];//n}//n//n// SM4 算法的线性变换//nunsigned int L(unsigned int x) {//n return x ^ (x << 2) ^ (x << 10) ^ (x << 18) ^ (x << 24) |//n (x >> 7) ^ (x >> 15) ^ (x >> 23);//n}//n//n// SM4 算法的轮函数//nunsigned int T(unsigned int x) {//n return L(S(x));//n}//n//n// SM4 算法的密钥扩展//nvoid KeyExpansion(const unsigned char* key, unsigned int* rk) {//n unsigned int K[36];//n for (int i = 0; i < 4; ++i) {//n K[i] = ((key[4i] << 24) | (key[4i+1] << 16) | (key[4i+2] << 8) | key[4i+3]) ^ FK[i];//n }//n for (int i = 0; i < 32; ++i) {//n K[i+4] = K[i] ^ T(K[i+1] ^ K[i+2] ^ K[i+3] ^ CK[i]);//n rk[i] = K[i+4];//n }//n}//n//n// SM4 算法的加密//nvoid Encrypt(const unsigned int* rk, const unsigned char* input, unsigned char* output) {//n unsigned int X[36];//n for (int i = 0; i < 4; ++i) {//n X[i] = (input[4i] << 24) | (input[4i+1] << 16) | (input[4i+2] << 8) | input[4i+3];//n }//n for (int i = 0; i < 32; ++i) {//n X[i+4] = X[i] ^ T(X[i+1] ^ X[i+2] ^ X[i+3] ^ rk[i]);//n }//n for (int i = 0; i < 4; ++i) {//n output[4i] = (X[35-i] >> 24) & 0xFF;//n output[4i+1] = (X[35-i] >> 16) & 0xFF;//n output[4i+2] = (X[35-i] >> 8) & 0xFF;//n output[4i+3] = X[35-i] & 0xFF;//n }//n}//n//n// SM4 算法的解密//nvoid Decrypt(const unsigned int* rk, const unsigned char* input, unsigned char* output) {//n unsigned int X[36];//n for (int i = 0; i < 4; ++i) {//n X[i] = (input[4i] << 24) | (input[4i+1] << 16) | (input[4i+2] << 8) | input[4i+3];//n }//n for (int i = 0; i < 32; ++i) {//n X[i+4] = X[i] ^ T(X[i+1] ^ X[i+2] ^ X[i+3] ^ rk[31-i]);//n }//n for (int i = 0; i < 4; ++i) {//n output[4i] = (X[35-i] >> 24) & 0xFF;//n output[4i+1] = (X[35-i] >> 16) & 0xFF;//n output[4i+2] = (X[35-i] >> 8) & 0xFF;//n output[4i+3] = X[35-i] & 0xFF;//n }//n}//n//nint main() {//n unsigned char key[16] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};//n unsigned char plaintext[16] = {0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10};//n unsigned char ciphertext[16];//n unsigned char decryptedtext[16];//n//n unsigned int rk[32];//n KeyExpansion(key, rk);//n//n Encrypt(rk, plaintext, ciphertext);//n Decrypt(rk, ciphertext, decryptedtext);//n//n std::cout << ///'Plaintext: ///' << std::endl;//n for (int i = 0; i < 16; ++i) {//n std::cout << std::hex << (int)plaintext[i] << ///' ///' << std::endl;//n }//n std::cout << std::endl;//n//n std::cout << ///'Ciphertext: ///' << std::endl;//n for (int i = 0; i < 16; ++i) {//n std::cout << std::hex << (int)ciphertext[i] << ///' ///' << std::endl;//n }//n std::cout << std::endl;//n//n std::cout << ///'Decryptedtext: ///' << std::endl;//n for (int i = 0; i < 16; ++i) {//n std::cout << std::hex << (int)decryptedtext[i] << ///' ///' << std::endl;//n }//n std::cout << std::endl;//n//n return 0;//n}//n///