AES.zip

  • Allentime
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  • C/C++
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  • 2021-04-16 09:05
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对字符进行加解密,实现在C++情况下的字符加解密过程
AES.zip
  • AES
  • main.cpp
    1.8KB
  • AES.pro.user
    18.6KB
  • aes.cpp
    15KB
  • aes.h
    2.2KB
  • AES.pro
    91B
内容介绍
#include <QDebug> #include <QFile> #include <string.h> #include "aes.h" const unsigned char AES::Sbox[16*16]= {// populate the Sbox matrix /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ /*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 }; const unsigned char AES::iSbox[16*16]= { // populate the iSbox matrix /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ /*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 }; const unsigned char AES::Rcon[11*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 }; AES::AES() { } AES::AES(int keySize, unsigned char *key) { // expand the seed key into a key schedule and store in w RunKeyExpansion(keySize, key); } AES::~AES() { } void AES::FileCipher(QFile *fin, QFile *fout) { unsigned char input[16]; unsigned char output [16]; if(fin->open(QIODevice::ReadOnly) && fout->open(QIODevice::ReadWrite)) { while(!fin->atEnd()) { memset((void *)input,0,16); fin->read((char*)input,16); Cipher(input,output); fout->write((char*)output,16); } } fin->close(); fout->close(); } void AES::FileInvCipher(QFile *fin, QFile *fout) { unsigned char input[16]; unsigned char output [16]; if(fin->open(QIODevice::ReadOnly) && fout->open(QIODevice::ReadWrite)) { while(!fin->atEnd()) { memset((void *)input,0,16); fin->read((char*)input,16); InvCipher(input,output); fout->write((char*)output,16); } } fin->close(); fout->close(); } void AES::Cipher(unsigned char* input, unsigned char* output) // encipher 16-bit input { // state = input memset(&State[0][0],0,16); int i; for (i = 0; i < (4 * Nb); i++)// { State[i % 4][ i / 4] = input[i]; } AddRoundKey(0); for (int round = 1; round <= (Nr - 1); round++) // main round loop { SubBytes(); ShiftRows(); MixColumns(); AddRoundKey(round); } // main round loop SubBytes(); ShiftRows(); AddRoundKey(Nr); // output = state for (i = 0; i < (4 * Nb); i++) { output[i] = State[i % 4][ i / 4]; } } // Cipher() void AES::InvCipher(unsigned char * input, unsigned char * output) // decipher 16-bit input { // state = input int i; memset(&State[0][0],0,16); for (i = 0; i < (4 * Nb); i++) { State[i % 4][ i / 4] = input[i]; } AddRoundKey(Nr); for (int round = Nr-1; round >= 1; round--) // main round loop { InvShiftRows(); InvSubBytes(); AddRoundKey(round); InvMixColumns(); } // end main round loop for InvCipher InvShiftRows(); InvSubBytes(); AddRoundKey(0); // output = state for (i = 0; i < (4 * Nb); i++) { output[i] = State[i % 4][ i / 4]; } } // InvCipher() void AES::Cipher(unsigned char *input, unsigned char *output, unsigned char *key, int keySize) { // expand the seed key into a key schedule and store in w RunKeyExpansion(keySize, key); Cipher(input, output); } void AES::InvCipher(unsigned char *input, unsigned char *output, unsigned char *key, int keySize) { // expand the seed key into a key schedule and store in w RunKeyExpansion(keySize, key); InvCipher(input, output); } void AES::RunKeyExpansion(int keySize, unsigned char* keyBytes) { SetNbNkNr(keySize);//初始化 memcpy(key, keyBytes, keySize); KeyExpansion(); } void AES::SetNbNkNr(int keyS) { Nb = 4; // block size always = 4 words = 16 bytes = 128 bits for AES if (keyS == Bits128) { Nk = 4; // key size = 4 words = 16 bytes = 128 bits Nr = 10; // rounds for algorithm = 10 } else if (keyS == Bits192) { Nk = 6; // 6 words = 24 bytes = 192 bits Nr = 12; } else if (keyS == Bits256) { Nk = 8; // 8 words = 32 bytes = 256 bits Nr = 14; } } // SetNbNkNr() void AES::KeyExpansion() { unsigned char result[4],result2[4]; memset(w,0,16*15);//没有根据key的位数进行开辟空间,直接开
评论
  • 1硕鼠1 2021-12-28 12:07:02
    没有文字介绍啊,看起来有点费劲
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