LoadRunner实现DES加密（二）

上篇说道LoadRunner中引用DES.h文件，对字符串进行加密，加密耗时很长，这篇主要讲生成DES加密的dll文件，在LoadRunner中引用，解决耗时问题。

编译工具

本次生成dll，是用的Eclipse for c/c++进行开发的，编译工具选择的是MinGW，工具的安装过程如下：1.MinGW官网http://www.mingw.org/ 下载安装包并进行安装。2.下载Eclipse for c/c++，官网  http://www.eclipse.org/downloads/packages/eclipse-ide-cc-developers/neon2

编译

1.新创建一个C Project，选择Shared Library

2.新建一个myDes.c文件

3.写入DES加密方法

#include "stdio.h"#include "string.h"#include "stdlib.h"int finallyPermute(int endByte[64],int fpByte[64]);int generateKeys(int keys[64],int newkeys[16][48]);int initPermute(int data[64],int ipByte[64]);int expandPermute(int rightData[32],int epByte[48]);int xor(int byteone[48],int bytetwo[48],int xorByte[48]);int sBoxPermute(int expandByte[48],int sBoxByte[32]);int pPermute(int sBoxByte[32],int pBoxPermute[32]);int ByteToBit(char ch, int bit[8]) {    int cnt;    int i;    for (cnt = 0, i = 7; cnt < 8; cnt++, i--) {        *(bit + i) = (int) (ch >> cnt) & 1;    }    return 0;}char BitToByte(int bit[4], char *chs) {    int cnt;    cnt = (int) bit[0] * 1000 + (int) bit[1] * 100 + (int) bit[2] * 10            + (int) bit[3];    switch (cnt) {    case 0:        *chs = '0';        break;    case 1:        *chs = '1';        break;    case 10:        *chs = '2';        break;    case 11:        *chs = '3';        break;    case 100:        *chs = '4';        break;    case 101:        *chs = '5';        break;    case 110:        *chs = '6';        break;    case 111:        *chs = '7';        break;    case 1000:        *chs = '8';        break;    case 1001:        *chs = '9';        break;    case 1010:        *chs = 'A';        break;    case 1011:        *chs = 'B';        break;    case 1100:        *chs = 'C';        break;    case 1101:        *chs = 'D';        break;    case 1110:        *chs = 'E';        break;    case 1111:        *chs = 'F';        break;    }    return 0;}int Char4ToBit64(char *ch, int bit[64]) {    int cnt;    int i;    int chLen=strlen(ch);    if (chLen<4) {        for (cnt = 0; cnt < chLen; cnt++) {            for (i = 0; i < 8; i++) {                *(bit + (cnt << 3) + i) = 0;            }        }        for (cnt = 0; cnt < chLen; cnt++) {            ByteToBit(*(ch + cnt), bit + 8 + (cnt << 4));        }        for (cnt = chLen; cnt < 4; cnt++) {            for (i = 0; i < 16; i++) {                *(bit + (cnt << 4) + i) = 0;            }        }    } else {        for (cnt = 0; cnt < 4; cnt++) {            for (i = 0; i < 8; i++) {                *(bit + (cnt << 4) + i) = 0;            }        }        for (cnt = 0; cnt < 4; cnt++) {            ByteToBit(*(ch + cnt), bit + 8 + (cnt << 4));        }    }    return 0;}int Bit64ToChar16(int bit[64], char ch[16]) {    int cnt;    //memset(ch,0,8);    for (cnt = 0; cnt < 16; cnt++) {        BitToByte(bit + (cnt * 4), ch + cnt);    }    return 0;}int enc(int data[64],int key[64],int fpByte[64]){    int i = 0, j = 0, k = 0, m = 0, n = 0;    int ipLeft[32],ipRight[32],tempLeft[32];    int keys[16][48];    int ipByte[64],finalData[64],newkey[48],epByte[48],xorByte[48],sBoxByte[32],pBoxPermute[32],tempRight[32];    generateKeys(key,keys);    initPermute(data,ipByte);    for (k = 0; k < 32; k++) {        ipLeft[k] = ipByte[k];        ipRight[k] = ipByte[32 + k];    }    for (i = 0; i < 16; i++) {        for (j = 0; j < 32; j++) {            tempLeft[j] = ipLeft[j];            ipLeft[j] = ipRight[j];        }        for (m = 0; m < 48; m++) {            newkey[m] = keys[i][m];        }        expandPermute(ipRight,epByte);        xor(epByte,newkey,xorByte);        sBoxPermute(xorByte,sBoxByte);        pPermute(sBoxByte,pBoxPermute);        xor(pBoxPermute,tempLeft,tempRight);        for (n = 0; n < 32; n++) {            ipRight[n] = tempRight[n];        }    }    for (i = 0; i < 32; i++) {        finalData[i] = ipRight[i];        finalData[32 + i] = ipLeft[i];    }    finallyPermute(finalData,fpByte);    return 0;}int finallyPermute(int endByte[64],int fpByte[64]){            fpByte[0] = endByte[39];            fpByte[1] = endByte[7];            fpByte[2] = endByte[47];            fpByte[3] = endByte[15];            fpByte[4] = endByte[55];            fpByte[5] = endByte[23];            fpByte[6] = endByte[63];            fpByte[7] = endByte[31];            fpByte[8] = endByte[38];            fpByte[9] = endByte[6];            fpByte[10] = endByte[46];            fpByte[11] = endByte[14];            fpByte[12] = endByte[54];            fpByte[13] = endByte[22];            fpByte[14] = endByte[62];            fpByte[15] = endByte[30];            fpByte[16] = endByte[37];            fpByte[17] = endByte[5];            fpByte[18] = endByte[45];            fpByte[19] = endByte[13];            fpByte[20] = endByte[53];            fpByte[21] = endByte[21];            fpByte[22] = endByte[61];            fpByte[23] = endByte[29];            fpByte[24] = endByte[36];            fpByte[25] = endByte[4];            fpByte[26] = endByte[44];            fpByte[27] = endByte[12];            fpByte[28] = endByte[52];            fpByte[29] = endByte[20];            fpByte[30] = endByte[60];            fpByte[31] = endByte[28];            fpByte[32] = endByte[35];            fpByte[33] = endByte[3];            fpByte[34] = endByte[43];            fpByte[35] = endByte[11];            fpByte[36] = endByte[51];            fpByte[37] = endByte[19];            fpByte[38] = endByte[59];            fpByte[39] = endByte[27];            fpByte[40] = endByte[34];            fpByte[41] = endByte[2];            fpByte[42] = endByte[42];            fpByte[43] = endByte[10];            fpByte[44] = endByte[50];            fpByte[45] = endByte[18];            fpByte[46] = endByte[58];            fpByte[47] = endByte[26];            fpByte[48] = endByte[33];            fpByte[49] = endByte[1];            fpByte[50] = endByte[41];            fpByte[51] = endByte[9];            fpByte[52] = endByte[49];            fpByte[53] = endByte[17];            fpByte[54] = endByte[57];            fpByte[55] = endByte[25];            fpByte[56] = endByte[32];            fpByte[57] = endByte[0];            fpByte[58] = endByte[40];            fpByte[59] = endByte[8];            fpByte[60] = endByte[48];            fpByte[61] = endByte[16];            fpByte[62] = endByte[56];            fpByte[63] = endByte[24];        return 0;}int pPermute(int sBoxByte[32],int pBoxPermute[32]){    pBoxPermute[0] = sBoxByte[15];            pBoxPermute[1] = sBoxByte[6];            pBoxPermute[2] = sBoxByte[19];            pBoxPermute[3] = sBoxByte[20];            pBoxPermute[4] = sBoxByte[28];            pBoxPermute[5] = sBoxByte[11];            pBoxPermute[6] = sBoxByte[27];            pBoxPermute[7] = sBoxByte[16];            pBoxPermute[8] = sBoxByte[0];            pBoxPermute[9] = sBoxByte[14];            pBoxPermute[10] = sBoxByte[22];            pBoxPermute[11] = sBoxByte[25];            pBoxPermute[12] = sBoxByte[4];            pBoxPermute[13] = sBoxByte[17];            pBoxPermute[14] = sBoxByte[30];            pBoxPermute[15] = sBoxByte[9];            pBoxPermute[16] = sBoxByte[1];            pBoxPermute[17] = sBoxByte[7];            pBoxPermute[18] = sBoxByte[23];            pBoxPermute[19] = sBoxByte[13];            pBoxPermute[20] = sBoxByte[31];            pBoxPermute[21] = sBoxByte[26];            pBoxPermute[22] = sBoxByte[2];            pBoxPermute[23] = sBoxByte[8];            pBoxPermute[24] = sBoxByte[18];            pBoxPermute[25] = sBoxByte[12];            pBoxPermute[26] = sBoxByte[29];            pBoxPermute[27] = sBoxByte[5];            pBoxPermute[28] = sBoxByte[21];            pBoxPermute[29] = sBoxByte[10];            pBoxPermute[30] = sBoxByte[3];            pBoxPermute[31] = sBoxByte[24];        return 0;}int  getBoxBinary(int i,int binary[4]){    switch (i) {            case 0:                binary[0] = 0;                binary[1] = 0;                binary[2] = 0;                binary[3] = 0;                break;            case 1:                binary[0] = 0;                binary[1] = 0;                binary[2] = 0;                binary[3] = 1;                break;            case 2:                binary[0] = 0;                binary[1] = 0;                binary[2] = 1;                binary[3] = 0;                break;            case 3:                binary[0] = 0;                binary[1] = 0;                binary[2] = 1;                binary[3] = 1;                break;            case 4:                binary[0] = 0;                binary[1] = 1;                binary[2] = 0;                binary[3] = 0;                break;            case 5:                binary[0] = 0;                binary[1] = 1;                binary[2] = 0;                binary[3] = 1;                break;            case 6:                binary[0] = 0;                binary[1] = 1;                binary[2] = 1;                binary[3] = 0;                break;            case 7:                binary[0] = 0;                binary[1] = 1;                binary[2] = 1;                binary[3] = 1;                break;            case 8:                binary[0] = 1;                binary[1] = 0;                binary[2] = 0;                binary[3] = 0;                break;            case 9:                binary[0] = 1;                binary[1] = 0;                binary[2] = 0;                binary[3] = 1;;                break;            case 10:                binary[0] = 1;                binary[1] = 0;                binary[2] = 1;                binary[3] = 0;                break;            case 11:                binary[0] = 1;                binary[1] = 0;                binary[2] = 1;                binary[3] = 1;                break;            case 12:                binary[0] = 1;                binary[1] = 1;                binary[2] = 0;                binary[3] = 0;                break;            case 13:                binary[0] = 1;                binary[1] = 1;                binary[2] = 0;                binary[3] = 1;                break;            case 14:                binary[0] = 1;                binary[1] = 1;                binary[2] = 1;                binary[3] = 0;                break;            case 15:                binary[0] = 1;                binary[1] = 1;                binary[2] = 1;                binary[3] = 1;                break;            }    return 0;}int sBoxPermute(int expandByte[48],int sBoxByte[32]){    int binary[4];    int s1[4][16] = {                    { 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 } };    int s2[4][16] = {            { 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 } };    int  s3[4][16] = {            { 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 } };    int s4[4][16] = {            { 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 } };    int s5[4][16] = {            { 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 } };    int s6[4][16] = {            { 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 } };    int s7[4][16] = {            { 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 } };    int s8[4][16] = {            { 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 } };    int m;    for (m = 0; m < 8; m++) {        int i = 0, j = 0;        i = expandByte[m * 6 + 0] * 2 + expandByte[m * 6 + 5];        j = expandByte[m * 6 + 1] * 2 * 2 * 2 + expandByte[m * 6 + 2] * 2                * 2 + expandByte[m * 6 + 3] * 2 + expandByte[m * 6 + 4];        switch (m) {        case 0:            getBoxBinary(s1[i][j],binary);            break;        case 1:            getBoxBinary(s2[i][j],binary);            break;        case 2:            getBoxBinary(s3[i][j],binary);            break;        case 3:            getBoxBinary(s4[i][j],binary);            break;        case 4:            getBoxBinary(s5[i][j],binary);            break;        case 5:            getBoxBinary(s6[i][j],binary);            break;        case 6:            getBoxBinary(s7[i][j],binary);            break;        case 7:            getBoxBinary(s8[i][j],binary);            break;        }        sBoxByte[m * 4 + 0] = binary[0];        sBoxByte[m * 4 + 1] = binary[1];        sBoxByte[m * 4 + 2] = binary[2];        sBoxByte[m * 4 + 3] = binary[3];    }    return 0;}int xor(int byteone[48],int bytetwo[48],int xorByte[48]){    int i;    for (i = 0; i < 48; i++) {        xorByte[i] = byteone[i] ^ bytetwo[i];    }    return 0;}int expandPermute(int rightData[32],int epByte[48]){    int i;    for (i = 0; i < 8; i++) {        if (i == 0) {            epByte[i * 6 + 0] = rightData[31];        } else {            epByte[i * 6 + 0] = rightData[i * 4 - 1];        }        epByte[i * 6 + 1] = rightData[i * 4 + 0];        epByte[i * 6 + 2] = rightData[i * 4 + 1];        epByte[i * 6 + 3] = rightData[i * 4 + 2];        epByte[i * 6 + 4] = rightData[i * 4 + 3];        if (i == 7) {            epByte[i * 6 + 5] = rightData[0];        } else {            epByte[i * 6 + 5] = rightData[i * 4 + 4];        }    }    return 0;}int generateKeys(int keys[64],int newkeys[16][48]){    int key[56];    int tempKey[48];    int i,j,k,m;    int loop[]={ 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 };    for ( i = 0; i < 7; i++) {        for ( j = 0, k = 7; j < 8; j++, k--) {            key[i * 8 + j] = keys[8 * k + i];        }    }    for (i = 0; i < 16; i++) {        int tempLeft = 0;        int tempRight = 0;        for (j = 0; j < loop[i]; j++) {            tempLeft = key[0];            tempRight = key[28];            for (k = 0; k < 27; k++) {                key[k] = key[k + 1];                key[28 + k] = key[29 + k];            }            key[27] = tempLeft;            key[55] = tempRight;        }        tempKey[0] = key[13];        tempKey[1] = key[16];        tempKey[2] = key[10];        tempKey[3] = key[23];        tempKey[4] = key[0];        tempKey[5] = key[4];        tempKey[6] = key[2];        tempKey[7] = key[27];        tempKey[8] = key[14];        tempKey[9] = key[5];        tempKey[10] = key[20];        tempKey[11] = key[9];        tempKey[12] = key[22];        tempKey[13] = key[18];        tempKey[14] = key[11];        tempKey[15] = key[3];        tempKey[16] = key[25];        tempKey[17] = key[7];        tempKey[18] = key[15];        tempKey[19] = key[6];        tempKey[20] = key[26];        tempKey[21] = key[19];        tempKey[22] = key[12];        tempKey[23] = key[1];        tempKey[24] = key[40];        tempKey[25] = key[51];        tempKey[26] = key[30];        tempKey[27] = key[36];        tempKey[28] = key[46];        tempKey[29] = key[54];        tempKey[30] = key[29];        tempKey[31] = key[39];        tempKey[32] = key[50];        tempKey[33] = key[44];        tempKey[34] = key[32];        tempKey[35] = key[47];        tempKey[36] = key[43];        tempKey[37] = key[48];        tempKey[38] = key[38];        tempKey[39] = key[55];        tempKey[40] = key[33];        tempKey[41] = key[52];        tempKey[42] = key[45];        tempKey[43] = key[41];        tempKey[44] = key[49];        tempKey[45] = key[35];        tempKey[46] = key[28];        tempKey[47] = key[31];        switch (i) {        case 0:            for (m = 0; m < 48; m++) {                newkeys[0][m] = tempKey[m];            }            break;        case 1:            for (m = 0; m < 48; m++) {                newkeys[1][m] = tempKey[m];            }            break;        case 2:            for (m = 0; m < 48; m++) {                newkeys[2][m] = tempKey[m];            }            break;        case 3:            for (m = 0; m < 48; m++) {                newkeys[3][m] = tempKey[m];            }            break;        case 4:            for (m = 0; m < 48; m++) {                newkeys[4][m] = tempKey[m];            }            break;        case 5:            for (m = 0; m < 48; m++) {                newkeys[5][m] = tempKey[m];            }            break;        case 6:            for (m = 0; m < 48; m++) {                newkeys[6][m] = tempKey[m];            }            break;        case 7:            for (m = 0; m < 48; m++) {                newkeys[7][m] = tempKey[m];            }            break;        case 8:            for (m = 0; m < 48; m++) {                newkeys[8][m] = tempKey[m];            }            break;        case 9:            for (m = 0; m < 48; m++) {                newkeys[9][m] = tempKey[m];            }            break;        case 10:            for (m = 0; m < 48; m++) {                newkeys[10][m] = tempKey[m];            }            break;        case 11:            for (m = 0; m < 48; m++) {                newkeys[11][m] = tempKey[m];            }            break;        case 12:            for (m = 0; m < 48; m++) {                newkeys[12][m] = tempKey[m];            }            break;        case 13:            for (m = 0; m < 48; m++) {                newkeys[13][m] = tempKey[m];            }            break;        case 14:            for (m = 0; m < 48; m++) {                newkeys[14][m] = tempKey[m];            }            break;        case 15:            for (m = 0; m < 48; m++) {                newkeys[15][m] = tempKey[m];            }            break;        }    }    return 0;}int initPermute(int data[64],int ipByte[64]){    int i = 0, m = 1, n = 0, j, k;            for (i = 0, m = 1, n = 0; i < 4; i++, m += 2, n += 2) {                for (j = 7, k = 0; j >= 0; j--, k++) {                    ipByte[i * 8 + k] = data[j * 8 + m];                    ipByte[i * 8 + k + 32] = data[j * 8 + n];                }            }    return 0;}int strEnc(char *data, char *key,char *result) {    int i, j, z,_len;    int frsitKeyBt[4][64];    int databt[64],fpByte[64];    char subChar[5] ;    char res[17];    int datalen = strlen(data);    int iterator = datalen / 4;    int remainder= datalen % 4;    _len=iterator*16+1;    if(remainder>0){        _len+=16;    }    for (i = 0; i < 4; i++) {        for (j = 0; j < 4; j++) {            subChar[j] = *(key + (4 * i) + j);        }        subChar[4]='\0';        Char4ToBit64(subChar, frsitKeyBt[i]);    }    for (z = 0; z < iterator; z++) {        for (j = 0; j < 4; j++) {            subChar[j] = *(data + (4 * z) + j);        }        subChar[4] = '\0';        Char4ToBit64(subChar, databt);        for (i = 0; i < 4; i++) {            enc(databt, frsitKeyBt[i], fpByte);            for (j = 0; j < 64; j++) {                databt[j]= fpByte[j];            }        }        Bit64ToChar16(fpByte, res);        res[16]='\0';        if(z == 0) {            strcpy(result, res);        } else {            strcat(result, res);        }    }    result[_len-1]='\0';    if(remainder>0){        for (i = 0; i <remainder; i++) {                subChar[i] = *(data + (4 * iterator) + i);        }        subChar[remainder]='\0';        Char4ToBit64(subChar, databt);        for (i = 0; i < 4; i++) {            enc(databt, frsitKeyBt[i], fpByte);            for (j = 0; j < 64; j++) {                databt[j]= fpByte[j];            }        }        Bit64ToChar16(fpByte, res);        res[16]='\0';        if(iterator == 0) {            strcpy(result, res);        } else {            strcat(result, res);        }    }    for(i=0;i<strlen(result);i++){        printf("%c",result[i]);    }    return 0;}char *DES(char *data,char *key){    char static res[200];    strEnc(data,key,res);    return res;}

4.编译

LoadRunner中引用dll文件

将编译后的dll文件拷贝到LoadRunner的脚本目录下，进行加载并进行测试（打开loadrunner日志）