AES加密算法

代码是抄的，版权信息有

代码压缩包下载地址：http://pan.baidu.com/s/1jGEKH1c

AES.h

///////////////////////////////

// http://mingcn.cnblogs.com //

//  xelz CopyRight (c) 2010  //

///////////////////////////////

#if !defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)

#define AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#include <cstdio>

#include <cmath>

#include <cstring>

#include <ctime>

#include <iostream>

#include <algorithm>

#include <set>

#include <vector>

#include <sstream>

#include <queue>

#include <typeinfo>

#include <fstream>

#include <map>

#include <stack>

#include "AES.h"

using namespace std;

class AES

{

public:

    AES(unsigned char* key);

    virtual ~AES();

    unsigned char* Cipher(unsigned char* input);

    unsigned char* InvCipher(unsigned char* input);

    void* Cipher(void* input, int length=);

    void* InvCipher(void* input, int length);

private:

    unsigned char Sbox[];

    unsigned char InvSbox[];

    unsigned char w[][][];

    void KeyExpansion(unsigned char* key, unsigned char w[][][]);

    unsigned char FFmul(unsigned char a, unsigned char b);

    void SubBytes(unsigned char state[][]);

    void ShiftRows(unsigned char state[][]);

    void MixColumns(unsigned char state[][]);

    void AddRoundKey(unsigned char state[][], unsigned char k[][]);

    void InvSubBytes(unsigned char state[][]);

    void InvShiftRows(unsigned char state[][]);

    void InvMixColumns(unsigned char state[][]);

};

#endif // !defined(AFX_AES_H__6BDD3760_BDE8_4C42_85EE_6F7A434B81C4__INCLUDED_)

AES.cpp

///////////////////////////////

// http://mingcn.cnblogs.com //

//  xelz CopyRight (c) 2010  //

///////////////////////////////

#include <cstdio>

#include <cmath>

#include <cstring>

#include <ctime>

#include <iostream>

#include <algorithm>

#include <set>

#include <vector>

#include <sstream>

#include <queue>

#include <typeinfo>

#include <fstream>

#include <map>

#include <stack>

#include "AES.h"

using namespace std;

#include "string.h"

#include "AES.h"

AES::AES(unsigned char* key)

{

    unsigned char sBox[] =

    { /*  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, /**/

        0xca,0x82,0xc9,0x7d,0xfa,0x59,0x47,0xf0,0xad,0xd4,0xa2,0xaf,0x9c,0xa4,0x72,0xc0, /**/

        0xb7,0xfd,0x93,0x26,0x36,0x3f,0xf7,0xcc,0x34,0xa5,0xe5,0xf1,0x71,0xd8,0x31,0x15, /**/

        0x04,0xc7,0x23,0xc3,0x18,0x96,0x05,0x9a,0x07,0x12,0x80,0xe2,0xeb,0x27,0xb2,0x75, /**/

        0x09,0x83,0x2c,0x1a,0x1b,0x6e,0x5a,0xa0,0x52,0x3b,0xd6,0xb3,0x29,0xe3,0x2f,0x84, /**/

        0x53,0xd1,0x00,0xed,0x20,0xfc,0xb1,0x5b,0x6a,0xcb,0xbe,0x39,0x4a,0x4c,0x58,0xcf, /**/

        0xd0,0xef,0xaa,0xfb,0x43,0x4d,0x33,0x85,0x45,0xf9,0x02,0x7f,0x50,0x3c,0x9f,0xa8, /**/

        0x51,0xa3,0x40,0x8f,0x92,0x9d,0x38,0xf5,0xbc,0xb6,0xda,0x21,0x10,0xff,0xf3,0xd2, /**/

        0xcd,0x0c,0x13,0xec,0x5f,0x97,0x44,0x17,0xc4,0xa7,0x7e,0x3d,0x64,0x5d,0x19,0x73, /**/

        0x60,0x81,0x4f,0xdc,0x22,0x2a,0x90,0x88,0x46,0xee,0xb8,0x14,0xde,0x5e,0x0b,0xdb, /**/

        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*/

    };

    unsigned char invsBox[] =

    { /*  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, /**/

        0x7c,0xe3,0x39,0x82,0x9b,0x2f,0xff,0x87,0x34,0x8e,0x43,0x44,0xc4,0xde,0xe9,0xcb, /**/

        0x54,0x7b,0x94,0x32,0xa6,0xc2,0x23,0x3d,0xee,0x4c,0x95,0x0b,0x42,0xfa,0xc3,0x4e, /**/

        0x08,0x2e,0xa1,0x66,0x28,0xd9,0x24,0xb2,0x76,0x5b,0xa2,0x49,0x6d,0x8b,0xd1,0x25, /**/

        0x72,0xf8,0xf6,0x64,0x86,0x68,0x98,0x16,0xd4,0xa4,0x5c,0xcc,0x5d,0x65,0xb6,0x92, /**/

        0x6c,0x70,0x48,0x50,0xfd,0xed,0xb9,0xda,0x5e,0x15,0x46,0x57,0xa7,0x8d,0x9d,0x84, /**/

        0x90,0xd8,0xab,0x00,0x8c,0xbc,0xd3,0x0a,0xf7,0xe4,0x58,0x05,0xb8,0xb3,0x45,0x06, /**/

        0xd0,0x2c,0x1e,0x8f,0xca,0x3f,0x0f,0x02,0xc1,0xaf,0xbd,0x03,0x01,0x13,0x8a,0x6b, /**/

        0x3a,0x91,0x11,0x41,0x4f,0x67,0xdc,0xea,0x97,0xf2,0xcf,0xce,0xf0,0xb4,0xe6,0x73, /**/

        0x96,0xac,0x74,0x22,0xe7,0xad,0x35,0x85,0xe2,0xf9,0x37,0xe8,0x1c,0x75,0xdf,0x6e, /**/

        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*/

    };

    memcpy(Sbox, sBox, );

    memcpy(InvSbox, invsBox, );

    KeyExpansion(key, w);

}

AES::~AES()

{

}

unsigned char* AES::Cipher(unsigned char* input)

{

    unsigned char state[][];

    int i,r,c;

    for(r=; r<; r++)

    {

        for(c=; c< ;c++)

        {

            state[r][c] = input[c*+r];

        }

    }

    AddRoundKey(state,w[]);

    for(i=; i<=; i++)

    {

        SubBytes(state);

        ShiftRows(state);

        if(i!=)MixColumns(state);

        AddRoundKey(state,w[i]);

    }

    for(r=; r<; r++)

    {

        for(c=; c< ;c++)

        {

            input[c*+r] = state[r][c];

        }

    }

    return input;

}

unsigned char* AES::InvCipher(unsigned char* input)

{

    unsigned char state[][];

    int i,r,c;

    for(r=; r<; r++)

    {

        for(c=; c< ;c++)

        {

            state[r][c] = input[c*+r];

        }

    }

    AddRoundKey(state, w[]);

    for(i=; i>=; i--)

    {

        InvShiftRows(state);

        InvSubBytes(state);

        AddRoundKey(state, w[i]);

        if(i)

        {

            InvMixColumns(state);

        }

    }

    for(r=; r<; r++)

    {

        for(c=; c< ;c++)

        {

            input[c*+r] = state[r][c];

        }

    }

    return input;

}

void* AES::Cipher(void* input, int length)

{

    unsigned char* in = (unsigned char*) input;

    int i;

    if(!length)

    {

        while(*(in+length++));

        in = (unsigned char*) input;

    }

    for(i=; i<length; i+=)

    {

        Cipher(in+i);

    }

    return input;

}

void* AES::InvCipher(void* input, int length)

{

    unsigned char* in = (unsigned char*) input;

    int i;

    for(i=; i<length; i+=)

    {

        InvCipher(in+i);

    }

    return input;

}

void AES::KeyExpansion(unsigned char* key, unsigned char w[][][])

{

    int i,j,r,c;

    unsigned char rc[] = {0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36};

    for(r=; r<; r++)

    {

        for(c=; c<; c++)

        {

            w[][r][c] = key[r+c*];

        }

    }

    for(i=; i<=; i++)

    {

        for(j=; j<; j++)

        {

            unsigned char t[];

            for(r=; r<; r++)

            {

                t[r] = j ? w[i][r][j-] : w[i-][r][];

            }

            if(j == )

            {

                unsigned char temp = t[];

                for(r=; r<; r++)

                {

                    t[r] = Sbox[t[(r+)%]];

                }

                t[] = Sbox[temp];

                t[] ^= rc[i-];

            }

            for(r=; r<; r++)

            {

                w[i][r][j] = w[i-][r][j] ^ t[r];

            }

        }

    }

}

unsigned char AES::FFmul(unsigned char a, unsigned char b)

{

    unsigned char bw[];

    unsigned char res=;

    int i;

    bw[] = b;

    for(i=; i<; i++)

    {

        bw[i] = bw[i-]<<;

        if(bw[i-]&0x80)

        {

            bw[i]^=0x1b;

        }

    }

    for(i=; i<; i++)

    {

        if((a>>i)&0x01)

        {

            res ^= bw[i];

        }

    }

    return res;

}

void AES::SubBytes(unsigned char state[][])

{

    int r,c;

    for(r=; r<; r++)

    {

        for(c=; c<; c++)

        {

            state[r][c] = Sbox[state[r][c]];

        }

    }

}

void AES::ShiftRows(unsigned char state[][])

{

    unsigned char t[];

    int r,c;

    for(r=; r<; r++)

    {

        for(c=; c<; c++)

        {

            t[c] = state[r][(c+r)%];

        }

        for(c=; c<; c++)

        {

            state[r][c] = t[c];

        }

    }

}

void AES::MixColumns(unsigned char state[][])

{

    unsigned char t[];

    int r,c;

    for(c=; c< ; c++)

    {

        for(r=; r<; r++)

        {

            t[r] = state[r][c];

        }

        for(r=; r<; r++)

        {

            state[r][c] = FFmul(0x02, t[r])

                        ^ FFmul(0x03, t[(r+)%])

                        ^ FFmul(0x01, t[(r+)%])

                        ^ FFmul(0x01, t[(r+)%]);

        }

    }

}

void AES::AddRoundKey(unsigned char state[][], unsigned char k[][])

{

    int r,c;

    for(c=; c<; c++)

    {

        for(r=; r<; r++)

        {

            state[r][c] ^= k[r][c];

        }

    }

}

void AES::InvSubBytes(unsigned char state[][])

{

    int r,c;

    for(r=; r<; r++)

    {

        for(c=; c<; c++)

        {

            state[r][c] = InvSbox[state[r][c]];

        }

    }

}

void AES::InvShiftRows(unsigned char state[][])

{

    unsigned char t[];

    int r,c;

    for(r=; r<; r++)

    {

        for(c=; c<; c++)

        {

            t[c] = state[r][(c-r+)%];

        }

        for(c=; c<; c++)

        {

            state[r][c] = t[c];

        }

    }

}

void AES::InvMixColumns(unsigned char state[][])

{

    unsigned char t[];

    int r,c;

    for(c=; c< ; c++)

    {

        for(r=; r<; r++)

        {

            t[r] = state[r][c];

        }

        for(r=; r<; r++)

        {

            state[r][c] = FFmul(0x0e, t[r])

                        ^ FFmul(0x0b, t[(r+)%])

                        ^ FFmul(0x0d, t[(r+)%])

                        ^ FFmul(0x09, t[(r+)%]);

        }

    }

}

TESTAES.cpp

///////////////////////////////

// http://mingcn.cnblogs.com //

//  xelz CopyRight (c) 2010  //

///////////////////////////////

#include <cstdio>

#include <cmath>

#include <cstring>

#include <ctime>

#include <iostream>

#include <algorithm>

#include <set>

#include <vector>

#include <sstream>

#include <queue>

#include <typeinfo>

#include <fstream>

#include <map>

#include <stack>

#include "AES.h"

using namespace std;

void print(unsigned char* state);

int main(int argc, char* argv[])

{

    unsigned char input[] =

    {

        0x32, 0x43, 0xf6, 0xa8,

        0x88, 0x5a, 0x30, 0x8d,

        0x31, 0x31, 0x98, 0xa2,

        0xe0, 0x37, 0x07, 0x34

    };

    unsigned char key[] =

    {

        0x2b, 0x7e, 0x15, 0x16,

        0x28, 0xae, 0xd2, 0xa6,

        0xab, 0xf7, 0x15, 0x88,

        0x09, 0xcf, 0x4f, 0x3c

    };

    AES aes(key);

    printf("Input:\n");

    print(input);

    aes.Cipher(input);

    printf("After Cipher:\n");

    print(input);

    aes.InvCipher(input);

    printf("After InvCipher:\n");

    print(input);

    int j;

    printf("\n");

    char str[] = "Hello,My AES Cipher!";

    printf("%s\n",str);

    for(j=; j<; j++)printf("%X ",(unsigned char)str[j]);

    printf("\n");

    aes.Cipher((void *)str);

    for(j=; j<; j++)printf("%X ",(unsigned char)str[j]);

    printf("\n");

    aes.InvCipher((void *)str,);

    for(j=; j<; j++)printf("%X ",(unsigned char)str[j]);

    printf("\n");

    return ;

}

void print(unsigned char* state)

{

    int i;

    for(i=; i<; i++)

    {

        printf("%s%X ",state[i]> ? "" : "", state[i]);

    }

    printf("\n");

}

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