AES源码

时间：2016-05-04 01:04:20 阅读：282 评论：0 收藏：0 [点我收藏+]

#define MESSAGESHOW(X) MessageBox(NULL,L##X,L"",0)
#define SECTION_SIZE 16
#define GET_BYTE_HIGH(x)  ((x & 0xf0)>>4)
#define GET_BYTE_LOW(x)( x & 0x0f)

#define xtime(x)   ((x<<1) ^ (((x>>7) & 1) * 0x1b))
#define mul(x,y) (((y & 1) * x) ^ ((y>>1 & 1) * xtime(x)) ^ ((y>>2 & 1) * xtime(xtime(x))) ^ ((y>>3 & 1) * xtime(xtime(xtime(x)))) ^ ((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))))


BYTE sBox[16][16] =
{ /*  0    1    2    3    4    5    6    7    8    9    a    b    c    d    e    f */
    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, /*0*/
    0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, /*1*/
    0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, /*2*/
    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, /*3*/
    0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, /*4*/
    0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, /*5*/
    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, /*6*/
    0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, /*7*/
    0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, /*8*/
    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, /*9*/
    0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, /*a*/
    0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, /*b*/
    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, /*c*/
    0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, /*d*/
    0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, /*e*/
    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16  /*f*/
};
BYTE invsBox[16][16] =
{ /*  0    1    2    3    4    5    6    7    8    9    a    b    c    d    e    f  */
    0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, /*0*/
    0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, /*1*/
    0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, /*2*/
    0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, /*3*/
    0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, /*4*/
    0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, /*5*/
    0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, /*6*/
    0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, /*7*/
    0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, /*8*/
    0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, /*9*/
    0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, /*a*/
    0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, /*b*/
    0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, /*c*/
    0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, /*d*/
    0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, /*e*/
    0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d  /*f*/
};
BYTE mix[4][4] = {  2, 3, 1, 1,
                    1, 2, 3, 1,
                    1, 1, 2, 3,
                    3, 1, 1, 2
};
BYTE rmix[4][4] = { 0x0e, 0x0b, 0x0d, 0x09,
                    0x09, 0x0e, 0x0b, 0x0d,
                    0x0d, 0x09, 0x0e, 0x0b,
                    0x0b, 0x0d, 0x09, 0x0e,
};
BYTE RC[] = { 0x00, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1B, 0x36 };
PVOID GetFileMapping(PHANDLE hFile, PHANDLE hMap, LPWSTR FileName);

// AES.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "windows.h"
#include "Header.h"


class  AES
{
private:
    BYTE SubKey[11][16];
    BYTE Key[4][4];
    BYTE PlainTextChanged[4][4];
    void BoxChange(PBYTE pByte, BYTE box[16][16])
    {
        *pByte = box[GET_BYTE_HIGH(*pByte)][GET_BYTE_LOW(*pByte)];
    }
    void KeyExtension()
    {
        memcpy(SubKey[0], Key, 16);
        for (int i = 1; i < 11; i++)
        {
            PBYTE temp1 = SubKey[i - 1] + 12;
            g_function(temp1, (i - 1) * 4 - 1);
            for (int j = 0; j < 16; j += 4)
            {
                BYTE temp2[4];
                memcpy(temp2, SubKey[i - 1] + j, 4);
                if (j == 0)
                {
                    for (int k = 0; k < 4; k++)
                    {
                        temp2[k] = temp2[k] ^ temp1[k];
                    }
                }
                else
                {
                    for (int k = 0; k < 4; k++)
                    {
                        temp2[k] = temp2[k] ^ SubKey[i][j - 4 + k];
                    }
                }
                memcpy(SubKey[i] + j, temp2, 4);
            }
        }
    }
    void g_function(PBYTE pINByte, int jValue)
    {
        BYTE result[4];
        result[0] = pINByte[1];
        result[1] = pINByte[2];
        result[2] = pINByte[3];
        result[3] = pINByte[0];
        for (int i = 0; i < 3; i++)
            BoxChange(result + i, sBox);
        BYTE RCJ[4] = { RC[jValue / 4], 0, 0, 0 };
        for (int i = 0; i < 3; i++)
            result[i] = result[i] ^ RCJ[i];
        memcpy(pINByte, result, 4);
        return;
    }
    BYTE FFmul(BYTE a,BYTE b)
    {
        unsigned char bw[4];
        unsigned char res = 0;
        int i;
        bw[0] = b;
        for (i = 1; i<4; i++)
        {
            bw[i] = bw[i - 1] << 1;
            if (bw[i - 1] & 0x80)
            {
                bw[i] ^= 0x1b;
            }
        }
        for (i = 0; i<4; i++)
        {
            if ((a >> i) & 0x01)
            {
                res ^= bw[i];
            }
        }
        return res;
    }
    //----------------------------------------------------------------
    void xorText(BYTE text1[4][4], BYTE text2[16])
    {
        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                text1[j][i] = text1[j][i] ^ *(text2 + i + j);
            }
        }
    }
    void shiftRow(BYTE Text[4][4])
    {
        BYTE temp[4][4];
        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                temp[i][j] = Text[i][(i + j) % 4];
            }
        }
        memcpy(Text, temp, 16);
    }
    void RshiftRow(BYTE Text[4][4])
    {
        BYTE temp[4][4];
        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                temp[i][j] = Text[i][(4 + j - i) % 4];
            }
        }
        memcpy(Text, temp, 16);
    }
    void mixCol(BYTE st[4][4])
    {
        for (int j =  0; j < 4; j++)
        {
            BYTE temp[4] = { 0 };
            
            temp[0] = FFmul(0x2, st[0][j]) ^ FFmul(0x3, st[1][j]) ^ FFmul(0x1, st[2][j]) ^ FFmul(0x1, st[3][j]);
            temp[1] = FFmul(0x1, st[0][j]) ^ FFmul(0x2, st[1][j]) ^ FFmul(0x3, st[2][j]) ^ FFmul(0x1, st[3][j]);
            temp[2] = FFmul(0x1, st[0][j]) ^ FFmul(0x1, st[1][j]) ^ FFmul(0x2, st[2][j]) ^ FFmul(0x3, st[3][j]);
            temp[3] = FFmul(0x3, st[0][j]) ^ FFmul(0x1, st[1][j]) ^ FFmul(0x1, st[2][j]) ^ FFmul(0x2, st[3][j]);
            st[0][j] = temp[0];
            st[1][j] = temp[1];
            st[2][j] = temp[2];
            st[3][j] = temp[3];
        }
    }
        void RmixCol(BYTE st[4][4])
        {
            for (int j = 0; j < 4; j++)
            {
                BYTE tmp[4] = { 0 };
                tmp[0] = FFmul(0x0e, st[0][j]) ^ FFmul(0x0b, st[1][j]) ^ FFmul(0x0d, st[2][j]) ^ FFmul(0x09, st[3][j]);
                tmp[1] = FFmul(0x09, st[0][j]) ^ FFmul(0x0e, st[1][j]) ^ FFmul(0x0b, st[2][j]) ^ FFmul(0x0d, st[3][j]);
                tmp[2] = FFmul(0x0d, st[0][j]) ^ FFmul(0x09, st[1][j]) ^ FFmul(0x0e, st[2][j]) ^ FFmul(0x0b, st[3][j]);
                tmp[3] = FFmul(0x0b, st[0][j]) ^ FFmul(0x0d, st[1][j]) ^ FFmul(0x09, st[2][j]) ^ FFmul(0x0e, st[3][j]);
                st[0][j] = tmp[0];
                st[1][j] = tmp[1];
                st[2][j] = tmp[2];
                st[3][j] = tmp[3];
            }
        }
        void ChangePlainText(PBYTE pPlainText)
        {
            for (int i = 0; i < 4; i++)
            {
                for (int j = 0; j < 4; j++)
                {
                    PlainTextChanged[j][i] = *(pPlainText + i*4 + j);
                }
            }
        }
        void ReChangePlainText(PBYTE pPlainText)
        {
            for (int i = 0; i < 4; i++)
            {
                for (int j = 0; j < 4; j++)
                {
                    *(pPlainText + i*4 + j) = PlainTextChanged[j][i];
                }
            }
        }
    public:
        AES(PBYTE pKey)
        {
            memcpy(this->Key, pKey, 16);
            KeyExtension();
        }
        void DeCrypt(PBYTE PlainText)
        {
            ChangePlainText(PlainText);
            for (int i = 10; i >=0; i--)
            {
                if (i == 10)
                {
                    xorText(PlainTextChanged, SubKey[i]);
                    RshiftRow(PlainTextChanged);
                    for (int j = 0; j < 16; j++)
                    {
                        BoxChange(PlainTextChanged[0], invsBox);
                    }
                }
                
                else if (i > 0 && i < 10)
                {
                    
                    xorText(PlainTextChanged, SubKey[i]);
                    RmixCol(PlainTextChanged);
                    RshiftRow(PlainTextChanged);
                    for (int j = 0; j < 16; j++)
                    {
                        BoxChange(PlainTextChanged[0], invsBox);
                    }
                    
                }
                
                else
                {
                    xorText(PlainTextChanged, SubKey[i]);
                }
                
            }
            ReChangePlainText(PlainText);
        }
        void EnCrypt(PBYTE PlainText)
        {
            ChangePlainText(PlainText);
            for (int i = 0; i < 11; i++)
            {
                
                if (i == 0)
                {
                    xorText(PlainTextChanged, SubKey[i]);
                }
                
                else if (i >= 1 && i <= 9)
                {
                    
                    for (int j = 0; j < 16; j++)
                    {
                        BoxChange(PlainTextChanged[0], sBox);
                    }
                    shiftRow(PlainTextChanged);
                    mixCol(PlainTextChanged);
                    xorText(PlainTextChanged, SubKey[i]);
                }
                
                else
                {
                    for (int j = 0; j < 16; j++)
                    {
                        BoxChange(PlainTextChanged[0], sBox);
                    }
                    shiftRow(PlainTextChanged);
                    xorText(PlainTextChanged, SubKey[i]);
                }

            }
            ReChangePlainText(PlainText);
        }
        ~AES()
        {
        }

    };


    int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nShowCmd)
    {

        TCHAR szBuffer[MAX_PATH] = { 0 };
        OPENFILENAME ofn = { 0 };
        ofn.lStructSize = sizeof(ofn);
        ofn.hwndOwner = NULL;
        ofn.lpstrFilter = _T("TXT文件(*.txt)\0*.txt\0所有文件(*.*)\0*.*\0");//要选择的文件后缀   
        ofn.lpstrInitialDir = _T("D:\\");//默认的文件路径   
        ofn.lpstrFile = szBuffer;//存放文件的缓冲区   
        ofn.nMaxFile = sizeof(szBuffer) / sizeof(*szBuffer);
        ofn.nFilterIndex = 0;
        ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_EXPLORER;//标志如果是多选要加上OFN_ALLOWMULTISELECT  
        BOOL bSel = GetOpenFileName(&ofn);
        //MESSAGESHOW("AAA");
        if (!bSel)
        {
            MESSAGESHOW("open file?");
            return 0;
        }
        //---------------------------------
        BYTE Key[16] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };
        HANDLE hFile, hMap;
        PVOID fileAddress = GetFileMapping(&hFile, &hMap, szBuffer);
        AES Aes(Key);
        int re = MessageBoxA(NULL, "encrypt or decrypt(false for decrypt)", "", MB_YESNOCANCEL);
        if (re ==IDYES)
        {
            for (DWORD i = 0; i < GetFileSize(hFile, 0)/SECTION_SIZE; i ++)
            {
                Aes.EnCrypt(((PBYTE)fileAddress) + i*SECTION_SIZE);
            }
            MESSAGESHOW("OK!the text has been encrypt");
        }
        else if (re == IDNO)
        {
            for (DWORD i = 0; i < GetFileSize(hFile, 0) / SECTION_SIZE; i ++)
            {
                Aes.DeCrypt(((PBYTE)fileAddress) + i*SECTION_SIZE);
            }
            MESSAGESHOW("OK!the text has been decrypt");
        }
        else
        {
            MESSAGESHOW("nothing done");
        }
        UnmapViewOfFile(fileAddress);
        CloseHandle(hMap);
        CloseHandle(hFile);
        return 0;
    }
    PVOID GetFileMapping(PHANDLE hFile, PHANDLE hMap, LPWSTR FileName)
    {
        *hFile = CreateFile(FileName, GENERIC_ALL, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
        if (*hFile == INVALID_HANDLE_VALUE)
        {
            MESSAGESHOW("can not create file");
            exit(0);
        }
        *hMap = CreateFileMapping(*hFile, 0, PAGE_READWRITE, 0, 0, 0);
        if (*hMap == INVALID_HANDLE_VALUE)
        {
            MESSAGESHOW("can not create filemapping");
            exit(0);
        }
        PVOID fileOffset = MapViewOfFile(*hMap, FILE_MAP_ALL_ACCESS, 0, 0, GetFileSize(*hFile, 0));
        return fileOffset;
    }