des3encrypt.java

DES加密算法的完整代码。 完整C++实现和完整J2ME代码实现3DES加密

/*
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import java.io.*;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author surez
 */
public class DES3Encrypt {
     static final int[] IP = {58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36,
        28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32,
        24, 16, 8, 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19,
        11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7
    };   
    static final int[] IP_1 = {40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15,
        55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53,
        21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19,
        59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25
    };   
    static final int[] PC_1 = {57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34,
        26, 18, 10, 2, 59, 51, 43, 35, 27, 19, 11, 3, 60, 52, 44, 36, 63,
        55, 47, 39, 31, 23, 15, 7, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53,
        45, 37, 29, 21, 13, 5, 28, 20, 12, 4
    };   
    static final int[] PC_2 = {14, 17, 11, 24, 1, 5, 3, 28, 15, 6, 21, 10, 23,
        19, 12, 4, 26, 8, 16, 7, 27, 20, 13, 2, 41, 52, 31, 37, 47, 55, 30,
        40, 51, 45, 33, 48, 44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32
    };   
    static final int[] E = {32, 1, 2, 3, 4, 5, 4, 5, 6, 7, 8, 9, 8, 9, 10, 11,
        12, 13, 12, 13, 14, 15, 16, 17, 16, 17, 18, 19, 20, 21, 20, 21, 22,
        23, 24, 25, 24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1
    };   
    static final int[] P = {16, 7, 20, 21, 29, 12, 28, 17, 1, 15, 23, 26, 5,
        18, 31, 10, 2, 8, 24, 14, 32, 27, 3, 9, 19, 13, 30, 6, 22, 11, 4,
        25
    };   
    static final int[][][] S_Box = {
        {{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7},
    {0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8},
    {4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0},
    {15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13}}, //S_Box[1]   
        {{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10},
    {3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5},
    {0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15},
    {13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9}}, //S_Box[2]   
        {{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8},
    {13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1},
    {13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7},
    {1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12}}, //S_Box[3]   
        {{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15},
    {13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9},
    {10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4},
    {3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14}}, //S_Box[4]   
        {{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9},
    {14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6},
    {4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14},
    {11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3}}, //S_Box[5]   
        {{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11},
    {10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8},
    {9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6},
    {4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13}}, //S_Box[6]   
        {{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1},
    {13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6},
    {1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2},
    {6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12}}, //S_Box[7]   
        {{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7},
    {1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2},
    {7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8},
    {2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}} //S_Box[8]   
    };
    static final int[] LeftMove = {1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1};
    
    public static void main(String args[]){
        DataOutputStream dataout = null;
        try {
            DES3Encrypt des3 = new DES3Encrypt();
            String p = "test";
            String password[] = {"tdkkp_GY",
                                 "p_SYb8dp",
                                 "_b3dkDYb"};
            System.out.println("TEXT: " + p);
            int[] pi = des3.ReadByteToInt(p.getBytes());
            int[][] key = new int[3][];
            key[0] = des3.ReadByteToInt(password[0].getBytes());
            key[1] = des3.ReadByteToInt(password[1].getBytes());
            key[2] = des3.ReadByteToInt(password[2].getBytes());
            int[] encryptR = des3.multiChunks3DesEntrypt(key, pi);
            dataout = new DataOutputStream(new FileOutputStream(".\\encryptTXT.txt"));
            System.out.print("Encrypt: ");
            for (int a = 0; a < encryptR.length; a++) {
                System.out.print(encryptR[a] + " ");
                dataout.write((encryptR[a]+" ").getBytes());
            }
            dataout.flush();
            dataout.close();
            dataout = null;
            System.out.println("");
            int[][] key1 = new int[3][];
            key1[0] = des3.ReadByteToInt(password[0].getBytes());
            key1[1] = des3.ReadByteToInt(password[1].getBytes());
            key1[2] = des3.ReadByteToInt(password[2].getBytes());
            int[] restoreR = des3.multiChunks3DesDetrypt(key1, encryptR);
            String reS = new String(des3.ReadIntToByte(restoreR));
            System.out.println("restore: " + reS);
        } catch (Exception ex) {
            
        }
    }
    
    public int[] multiChunks3DesEntrypt(int key[][], int pi[]){
        int encryptR[] = multiChunksDes(key[0], pi, 1);
        encryptR = multiChunksDes(key[1], encryptR, 0);
        encryptR = multiChunksDes(key[2], encryptR, 1);
        return encryptR;
    }
    
    public int[] multiChunks3DesDetrypt(int key[][], int pi[]){
        int encryptR[] = multiChunksDes(key[2], pi, 0);
        encryptR = multiChunksDes(key[1], encryptR, 1);
        encryptR = multiChunksDes(key[0], encryptR, 0);
        return encryptR;
    }
    
    public int[] multiChunksDes(int key[], int pi[], int flag){
        int tempkey[] = new int[key.length];
        int encryptR[] = new int[pi.length];
        int groupData[] = new int[8];
        int groupNum = pi.length/8+(pi.length%8==0?0:1);
        for(int a=0;a<groupNum;a++){
            for(int b=0;b<groupData.length;b++){
                groupData[b] = pi[a*8+b];
            }
            tempkey = key;
            int encrypt[] = Des(tempkey, groupData, flag);
            for(int b=0;b<encrypt.length;b++){
                encryptR[a*8+b] = encrypt[b];
            }
        }
        return encryptR;
    }
    
    public int[] Des(int[] key, int[] time, int flag) {
        int i;
        int j;
        int flags = flag;
        int[] keydata = new int[64];
        int[] timedata = new int[64];
        int[] EncryptCode = new int[8];
        int[][] KeyArray = new int[16][48];
        keydata = ReadDataToInt(key);
        timedata = ReadDataToInt(time);
        KeyInitialize(keydata, KeyArray);
        EncryptCode = Encrypt(timedata, flags, KeyArray);
        return EncryptCode;
    }

    private int KeyInitialize(int[] key, int[][] keyarray) {
        int i;
        int j;
        int[] K0 = new int[56];
        for (i = 0; i < 56; i++) {
            K0[i] = key[PC_1[i] - 1];
        }
        for (i = 0; i < 16; i++) {
            LeftBitMove(K0, LeftMove[i]);
            for (j = 0; j < 48; j++) {
                keyarray[i][j] = K0[PC_2[j] - 1];
            }
        }
        return 0;
    }

    private int[] Encrypt(int[] timeData, int flag, int[][] keyarray) {
        int i;
        int j;
        int[] encrypt = new int[8];
        int flags = flag;
        int[] M = new int[64];
        int[] MIP_1 = new int[64];
        for (i = 0; i < 64; i++) {
            M[i] = timeData[IP[i] - 1];
        }
        if (flags == 1)
        {
            for (i = 0; i < 16; i++) {
                LoopF(M, i, flags, keyarray);
            }
        } else if (flags == 0)
        {
            for (i = 15; i > -1; i--) {
                LoopF(M, i, flags, keyarray);
            }
        }
        for (i = 0; i < 64; i++) {
            MIP_1[i] = M[IP_1[i] - 1];
        }
        GetEncryptInt(MIP_1, encrypt);
        return encrypt;
    }
    
    private int[] ReadByteToInt(byte[] bytedata){
        int size = (bytedata.length/8+(bytedata.length%8==0?0:1))*8;
        int[] IntVa = new int[size];
        for(int a=0;a<bytedata.length;a++){
            IntVa[a] = bytedata[a] & 0x000000ff;
        }
        return IntVa;
    }
    
    private byte[] ReadIntToByte(int[] bytedata){
        byte[] IntVa = new byte[bytedata.length];
        for(int a=0;a<bytedata.length;a++){
            IntVa[a] = (byte)(bytedata[a] & 0x000000ff);
        }
        return IntVa;
    }
    
    private int[] ReadDataToInt(int[] intdata) {
        int i;
        int j;
        int[] IntDa = new int[8];
        IntDa = intdata;
        int[] IntVa = new int[64];
        for (i = 0; i < 8; i++) {
            for (j = 0; j < 8; j++) {
                IntVa[((i * 8) + 7) - j] = IntDa[i] % 2;
                IntDa[i] = IntDa[i] / 2;
            }
        }
        return IntVa;
    }

    private int LeftBitMove(int[] k, int offset) {
        int i;
        int[] c0 = new int[28];
        int[] d0 = new int[28];
        int[] c1 = new int[28];
        int[] d1 = new int[28];
        for (i = 0; i < 28; i++) {
            c0[i] = k[i];
            d0[i] = k[i + 28];
        }
        if (offset == 1) {
            for (i = 0; i < 27; i++)
            {
                c1[i] = c0[i + 1];
                d1[i] = d0[i + 1];
            }
            c1[27] = c0[0];
            d1[27] = d0[0];
        } else if (offset == 2) {
            for (i = 0; i < 26; i++)
            {
                c1[i] = c0[i + 2];
                d1[i] = d0[i + 2];
            }
            c1[26] = c0[0];
            d1[26] = d0[0];
            c1[27] = c0[1];
            d1[27] = d0[1];
        }
        for (i = 0; i < 28; i++) {
            k[i] = c1[i];
            k[i + 28] = d1[i];
        }
        return 0;
    }

    private int LoopF(int[] M, int times, int flag, int[][] keyarray) {
        int i;
        int j;
        int[] L0 = new int[32];
        int[] R0 = new int[32];
        int[] L1 = new int[32];
        int[] R1 = new int[32];
        int[] RE = new int[48];
        int[][] S = new int[8][6];
        int[] sBoxData = new int[8];
        int[] sValue = new int[32];
        int[] RP = new int[32];
        for (i = 0; i < 32; i++) {
            L0[i] = M[i];
            R0[i] = M[i + 32];
        }
        for (i = 0; i < 48; i++) {
            RE[i] = R0[E[i] - 1];
            RE[i] = RE[i] + keyarray[times][i];
            if (RE[i] == 2) {
                RE[i] = 0;
            }
        }
        for (i = 0; i < 8; i++)
        {
            for (j = 0; j < 6; j++) {
                S[i][j] = RE[(i * 6) + j];
            }
            sBoxData[i] = S_Box[i][(S[i][0] << 1) + S[i][5]][(S[i][1] << 3) + (S[i][2] << 2) + (S[i][3] << 1) + S[i][4]];
            for (j = 0; j < 4; j++) {
                sValue[((i * 4) + 3) - j] = sBoxData[i] % 2;
                sBoxData[i] = sBoxData[i] / 2;
            }
        }
        for (i = 0; i < 32; i++) {
            RP[i] = sValue[P[i] - 1];
            L1[i] = R0[i];
            R1[i] = L0[i] + RP[i];

            if (R1[i] == 2) {
                R1[i] = 0;
            }
            if (((flag == 0) && (times == 0)) || ((flag == 1) && (times == 15))) {
                M[i] = R1[i];
                M[i + 32] = L1[i];
            } else {
                M[i] = L1[i];
                M[i + 32] = R1[i];
            }
        }
        return 0;
    }

    private int GetEncryptInt(int[] data, int[] value) {
        int i;
        int j;
        for (i = 0; i < 8; i++) {
            for (j = 0; j < 8; j++) {
                value[i] += (data[(i << 3) + j] << (7 - j));
            }
        }
        return 0;
    }   
}