md5校验 校验class.dex和AndroidManifest.xml

//ApkCheck.h

[C++] 纯文本查看 复制代码

/*******************************************************************************
该方法是校验class.dex和AndroidManifest.xml
只需在你要进行校验的地方进行判断即可，如下：
if(!ApkCheck::AndroidFileCheck())
{
    //返回为flase时，证明校验失败，说明有修改行为,给个提示，然后退出游戏
    CCLog("apk check false!");
    CCDirector::sharedDirector()->end();
}
class.dex和AndroidManifest.xml的MD5要自己从APK解压后，自己计算出来（可使用MD5工具）,并填入ApkCheck.cpp中对应校验的地方即可
*******************************************************************************/

#ifndef UTIL_APKCHECK_H_
#define UTIL_APKCHECK_H_

#include "cocos2d.h"

class ApkCheck
{
public:
    static bool AndroidFileCheck();
};

#endif // UTIL_APKCHECK_H_

//ApkCheck.cpp

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#include "ApkCheck.h"
#include "YMD5.h"
#include "cocos2d.h"
#include "platform/CCFileUtils.h"
#include "config.h"
USING_NS_CC;

/**包含所需的文件，只有在Android平台下需要，所以用条件编译语句括起来。*/
#if CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID
#include "jni.h"
#include "platform/android/jni/JniHelper.h"
#include "platform/android/jni/Java_org_cocos2dx_lib_Cocos2dxHelper.h"
#endif

//需要使用者按自己的情况修改下面的类名之类的，不要全部直接复制。
bool ApkCheck::AndroidFileCheck(){
#if CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID
    unsigned long file_size;
    const char *apk_path = getApkPath();
    
    //校验dex文件
    unsigned char *dexbuffer = CCFileUtils::sharedFileUtils()->getFileDataFromZip(apk_path,
                                                                                 "classes.dex",
                                                                                 &file_size);
    YCMD5 dexcmd5;
    const char *dexmd5_result=dexcmd5.GetFileMD5Values_buffer(dexbuffer,file_size);
    CCLOG("vvvvvvvvvvvvvvdex %s",dexmd5_result);
        int cmpdex_result=strcmp(dexmd5_result, config::m_sClassDexMD5);//我这里是放在config::m_sClassDexMD5,用的时候改为你觉得方便的地方。一个是classes.dex的md5值，一个是AndroidMainifest.xml文件的md5值。
    delete []dexbuffer;
    
    //校验manifest文件
    unsigned char *manifestbuffer =CCFileUtils::sharedFileUtils()->getFileDataFromZip(apk_path,
                                                                                      "AndroidManifest.xml",
                                                                                      &file_size);
    YCMD5 manifestcmd5;
    const char *manifestmd5_result=manifestcmd5.GetFileMD5Values_buffer(manifestbuffer,file_size);
        CCLOG("vvvvvvvvvvvvvvmani %s",manifestmd5_result);
    int cmpmanifest_result=strcmp(manifestmd5_result, config::m_sManifestMD5);//AndroidMainifest.xml文件的md5值。
    delete []manifestbuffer;
    
    CCLog("dex =%s ,saved dex =%s",dexmd5_result,config::m_sClassDexMD5);
    CCLog("manifest.xml =%s ,saved anifest.xml =%s",manifestmd5_result,config::m_sManifestMD5);
    if(cmpdex_result==0&&cmpmanifest_result==0)
        return true;
    else
        return false;
#else
    CCLog("if not android ,fileCheck return true");
    return true;
#endif
}

//config.h

[C++] 纯文本查看 复制代码

// 游戏全局配置文件

#ifndef COMMON_CONFIG_H_
#define COMMON_CONFIG_H_
 
namespace config {
 
const char *const m_sClassDexMD5 = "647096e34265eb887aa8f6f87546bea4";
const char *const m_sManifestMD5 = "03792a306889de8a0816865ad075a653";
 
}

#endif // COMMON_CONFIG_H_

//YMD5.h

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#ifndef MD5_H
#define MD5_H

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

typedef unsigned char TYBYTE;
typedef unsigned int  TYUINT;

class YCMD5
{
public:
        
        YCMD5(void);
    
        char* GetFileMD5Values(const char* pFileName);
    char* GetFileMD5Values_buffer(const unsigned char* pFileBuffer, unsigned long nBufferLen);
        char* GetStringMD5Values(const char* pStr);
private:
        void  Init(void);
        void  UpDate(const TYBYTE* input, TYUINT length);
        void  Transform(const TYBYTE* block);
        void  DeCode(const TYBYTE* input, TYUINT* output, TYUINT length);
        void  EnCode(const TYUINT* input, TYBYTE* output, TYUINT length);
        void  SetMD5Code(const TYBYTE* input, TYUINT length);
    
        const TYBYTE* Digest();
    
private:
        TYUINT        m_state[4];                // state (ABCD)
        TYUINT        m_count[2];                // number of bits, modulo 2^64 (low-order word first)
        TYBYTE        m_buffer[64];        // input buffer
        TYBYTE        m_digest[16];        // message digest
        char        m_MD5Val[33];        // 保存 MD5 值
};

#endif        //        MD5_H

YMD5.cpp//

[C++] 纯文本查看 复制代码

#include "YMD5.h"
#include <fstream>
using std::ifstream;

//////////////////////////////////////////////////////////////////////////
//        定义一个 4x4 矩阵
#define S11 7
#define S12 12
#define S13 17
#define S14 22
#define S21 5
#define S22 9
#define S23 14
#define S24 20
#define S31 4
#define S32 11
#define S33 16
#define S34 23
#define S41 6
#define S42 10
#define S43 15
#define S44 21

//////////////////////////////////////////////////////////////////////////
//        F, G, H and I are basic CMD5 functions
#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z))
#define I(x, y, z) ((y) ^ ((x) | (~z)))

//////////////////////////////////////////////////////////////////////////
//        ROTATE_LEFT rotates x left n bits
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))

//////////////////////////////////////////////////////////////////////////
//        FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4
//        Rotation is separate from addition to prevent recomputation
#define FF(a, b, c, d, x, s, ac) { \
(a) += F ((b), (c), (d)) + (x) + ac; \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

#define GG(a, b, c, d, x, s, ac) { \
(a) += G ((b), (c), (d)) + (x) + ac; \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

#define HH(a, b, c, d, x, s, ac) { \
(a) += H ((b), (c), (d)) + (x) + ac; \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

#define II(a, b, c, d, x, s, ac) { \
(a) += I ((b), (c), (d)) + (x) + ac; \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}

//////////////////////////////////////////////////////////////////////////
//
const int         BUFFER_SIZE = 1024;
const TYBYTE PADDING[64] = { 0x80 };
const char         HEX[16]         =
{
        '0', '1', '2', '3',
        '4', '5', '6', '7',
        '8', '9', 'a', 'b',
        'c', 'd', 'e', 'f'
};

//////////////////////////////////////////////////////////////////////////
//        默认构造函数
YCMD5::YCMD5(void)
{
}

//////////////////////////////////////////////////////////////////////////
//        重置
void YCMD5::Init()
{
        m_count[0] = 0;
        m_count[1] = 0;
        
        m_state[0] = 0x67452301;
        m_state[1] = 0xefcdab89;
        m_state[2] = 0x98badcfe;
        m_state[3] = 0x10325476;
    
        memset(m_MD5Val, 0, 33);
}

//////////////////////////////////////////////////////////////////////////
//
void YCMD5::UpDate(const TYBYTE* input, TYUINT length)
{
        TYUINT i, index, partLen;
    
        /* Compute number of bytes mod 64 */
        index = (TYUINT)((m_count[0] >> 3) & 0x3f);
    
        /* update number of bits */
        if ((m_count[0] += ((TYUINT)length << 3)) < ((TYUINT)length << 3))
        {
                ++m_count[1];
        }
        m_count[1] += ((TYUINT)length >> 29);
    
        partLen = 64 - index;
    
        /* transform as many times as possible. */
        if (length >= partLen)
        {
        
                memcpy(&m_buffer[index], input, partLen);
                Transform(m_buffer);
        
                for (i = partLen; i + 63 < length; i += 64)
                {
                        Transform(&input[i]);
                }
                index = 0;
        
        }
        else
        {
                i = 0;
        }
    
        /* Buffer remaining input */
        memcpy(&m_buffer[index], &input[i], length - i);
}

//////////////////////////////////////////////////////////////////////////
//
void YCMD5::Transform(const TYBYTE block[64])
{
        TYUINT a = m_state[0];
        TYUINT b = m_state[1];
        TYUINT c = m_state[2];
        TYUINT d = m_state[3];
    
        TYUINT x[16] = {0};
    
        DeCode(block, x, 64);
    
        /* Round 1 */
        FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
        FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
        FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
        FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
        FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
        FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
        FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
        FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
        FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
        FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
        FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
        FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
        FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
        FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
        FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
        FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
    
        /* Round 2 */
        GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
        GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
        GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
        GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
        GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
        GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
        GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
        GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
        GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
        GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
        GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
        GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
        GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
        GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
        GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
        GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
    
        /* Round 3 */
        HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
        HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
        HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
        HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
        HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
        HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
        HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
        HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
        HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
        HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
        HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
        HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
        HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
        HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
        HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
        HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
    
        /* Round 4 */
        II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
        II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
        II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
        II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
        II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
        II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
        II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
        II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
        II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
        II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
        II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
        II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
        II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
        II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
        II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
        II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
    
        m_state[0] += a;
        m_state[1] += b;
        m_state[2] += c;
        m_state[3] += d;
}

//////////////////////////////////////////////////////////////////////////
//
void YCMD5::DeCode(const TYBYTE* input, TYUINT* output, TYUINT length)
{
        for (TYUINT i = 0, j = 0; j < length; ++i, j += 4)
        {
                output[i] = ((TYUINT)input[j])
        | (((TYUINT)input[j + 1]) << 8)
        | (((TYUINT)input[j + 2]) << 16)
        | (((TYUINT)input[j + 3]) << 24);
        }
}

//////////////////////////////////////////////////////////////////////////
//
void YCMD5::EnCode(const TYUINT* input, TYBYTE* output, TYUINT length)
{
        for (size_t i = 0, j = 0; j < length; ++i, j += 4)
        {
                output[j]          = (TYBYTE)(input[i] & 0xff);
                output[j + 1] = (TYBYTE)((input[i] >> 8)  & 0xff);
                output[j + 2] = (TYBYTE)((input[i] >> 16) & 0xff);
                output[j + 3] = (TYBYTE)((input[i] >> 24) & 0xff);
        }
}

//////////////////////////////////////////////////////////////////////////
//        计算 MD5 值
void YCMD5::SetMD5Code(const TYBYTE* input, TYUINT length)
{
        int t, a, b;
        for (size_t i = 0; i < length; ++i)
        {
                t = input[i];
                a = t / 16;
                b = t % 16;
                m_MD5Val[2 * i]     = HEX[a];
                m_MD5Val[2 * i + 1] = HEX[b];
        }
}

//////////////////////////////////////////////////////////////////////////
//        获取文件的 MD5 值
char* YCMD5::GetFileMD5Values(const char* pFileName)
{
        Init();
        ifstream file(pFileName);
        if (!file)
        {
                /* 加载文件失败，返回空串 */
                return "";
        }
    
        std::streamsize length;
        char buffer[BUFFER_SIZE];
        while (!file.eof())
        {
                memset(buffer, 0, BUFFER_SIZE);
                file.read(buffer, BUFFER_SIZE);
                length = file.gcount();
                if (length > 0)
                {
                        UpDate((const TYBYTE*)buffer, length);
                }
        }
        file.close();
        SetMD5Code(Digest(), 16);
        return m_MD5Val;
}
//////////////////////////////////////////////////////////////////////////
//        获取文件的 MD5 值
char* YCMD5::GetFileMD5Values_buffer(const unsigned char* pFileBuffer, unsigned long nBufferLen)
{
        Init();
        if (pFileBuffer == NULL || nBufferLen <= 0)
        {
                return "";
        }
        char buffer[BUFFER_SIZE];
        int length = 0;
        while (nBufferLen > 0)
        {
                if (nBufferLen > BUFFER_SIZE)
                {
                        length = BUFFER_SIZE;
                }
                else
                {
                        length = nBufferLen;
                }
                memcpy(buffer, pFileBuffer, length);
                pFileBuffer += length;
                nBufferLen -= length;
                if (length > 0)
                {
                        UpDate((const TYBYTE*)buffer, length);
                }
        }
        SetMD5Code(Digest(), 16);
        return m_MD5Val;
}
//////////////////////////////////////////////////////////////////////////
//        获取字符串的 MD5 值
char* YCMD5::GetStringMD5Values(const char* pStr)
{
        Init();
        UpDate((const TYBYTE*)pStr, (TYUINT)strlen(pStr));
        SetMD5Code(Digest(), 16);
        return m_MD5Val;
}

//////////////////////////////////////////////////////////////////////////
//
const TYBYTE* YCMD5::Digest()
{
        TYBYTE bits[8];
        TYUINT oldState[4];
        TYUINT oldCount[2];
        TYUINT index;
        TYUINT padLen;
    
        /* Save current state and count. */
        memcpy(oldState, m_state, 16);
        memcpy(oldCount, m_count, 8);
    
        /* Save number of bits */
        EnCode(m_count, bits, 8);
    
        /* Pad out to 56 mod 64. */
        index  = (TYUINT)((m_count[0] >> 3) & 0x3f);
        padLen = (index < 56) ? (56 - index) : (120 - index);
        UpDate(PADDING, padLen);
    
        /* Append length (before padding) */
        UpDate(bits, 8);
    
        /* Store state in digest */
        EnCode(m_state, m_digest, 16);
    
        /* Restore current state and count. */
        memcpy(m_state, oldState, 16);
        memcpy(m_count, oldCount, 8);
    
        return m_digest;
}

来支持一下~~

前排绑定~~~~~~

噢噢  原来以前so里面有多个MD5值就是验证多个文件啊..
以后对照成某个文件 再修改MD5值哈

我似乎还是可以站到前排观看的

后排围观

顶！相当不错，学习了

表示完全看不懂啊

好文