C BIN加密
#include <stdio.h>
#include <string.h>
#include <stdlib.h> #ifndef DWORD
#define DWORD unsigned int
#endif #ifndef BYTE
#define BYTE unsigned char
#endif #ifndef bool
#define bool unsigned int
#endif #define FLASH_HW_KEY 0x08825252
#define FLASH_HW_KEY_0 ((FLASH_HW_KEY <<(32-11)) |(FLASH_HW_KEY>>11))
#define FLASH_HW_KEY_1 ((FLASH_HW_KEY <<(32-20)) |(FLASH_HW_KEY>>20))
#define FLASH_HW_KEY_2 ((FLASH_HW_KEY <<(32-26)) |(FLASH_HW_KEY>>26))
#define FLASH_HW_KEY_3 ((FLASH_HW_KEY <<(32-7)) |(FLASH_HW_KEY>>7)) DWORD cmN_BytesToDWORD(char* bytes)
{
int i;
DWORD value;
value = ;
char* tmpByte;
//printf("cmN_BytesToDWORD %p\n", bytes);
for(i=;i<;i++)
{
tmpByte = &bytes[i];
if(tmpByte)
{
value |= (*tmpByte & 0xFF) <<(*i);
//printf("%x\t ", value);
}
}
return value;
} void cmN_DWORDToBytes(char* bytes, DWORD value)
{
int i;
char* tmpbyte; for(i=;i<;i++)
{
tmpbyte = &bytes[i];
*tmpbyte = (BYTE)(value >> (*i)) & 0xFF;
}
} bool cmN_GetBitFromDword(DWORD data, BYTE i)
{
if( (data>>i)& )
return ;
else
return ;
} DWORD Mix_0(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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} DWORD Mix_1(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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} DWORD Mix_2(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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} DWORD Mix_3(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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} DWORD unMix_0(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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}
DWORD unMix_1(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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} DWORD unMix_2(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
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}
DWORD unMix_3(DWORD data)
{
return ( (cmN_GetBitFromDword(data, )<<)
| (cmN_GetBitFromDword(data, )<<)
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} void hwEncodeRawDataForFlash(char * pChar, DWORD length, DWORD ref_address)
{
DWORD tmplength=;
DWORD in_data, data_add, pre_xor_data, out_data;
BYTE type; //to handle for each DWORD
while( tmplength < length)
{
//printf("tmplength %d\n", tmplength);
in_data = cmN_BytesToDWORD(pChar);
data_add = in_data + FLASH_HW_KEY;
type = (BYTE)(ref_address>>) & 0x03; if(type==)
{
pre_xor_data = Mix_0(data_add);
out_data = pre_xor_data^FLASH_HW_KEY_0;
cmN_DWORDToBytes(pChar, out_data); }
else if(type==)
{
pre_xor_data = Mix_1(data_add);
out_data = pre_xor_data^FLASH_HW_KEY_1;
cmN_DWORDToBytes(pChar, out_data);
}
else if(type==)
{
pre_xor_data = Mix_2(data_add);
out_data = pre_xor_data^FLASH_HW_KEY_2;
cmN_DWORDToBytes(pChar, out_data);
}
else if(type==)
{
pre_xor_data = Mix_3(data_add);
out_data = pre_xor_data^FLASH_HW_KEY_3;
cmN_DWORDToBytes(pChar, out_data);
} ref_address += ;
pChar += ;
tmplength += ;
} pChar -= tmplength;
} void hwDecodeRawDataForFlash(char * pChar, DWORD length, DWORD ref_address)
{
DWORD tmplength=;
DWORD in_data, pre_xor_data, out_data;
BYTE type; while( tmplength < length)
{
in_data = cmN_BytesToDWORD(pChar);
type = (BYTE)(ref_address>>) & 0x03;
if(type==)
{
in_data = in_data^FLASH_HW_KEY_0;
pre_xor_data = unMix_0(in_data);
out_data = pre_xor_data - FLASH_HW_KEY;
cmN_DWORDToBytes(pChar, out_data); }
else if(type==)
{
in_data = in_data^FLASH_HW_KEY_1;
pre_xor_data = unMix_1(in_data);
out_data = pre_xor_data - FLASH_HW_KEY;
cmN_DWORDToBytes(pChar, out_data);
}
else if(type==)
{
in_data = in_data^FLASH_HW_KEY_2;
pre_xor_data = unMix_2(in_data);
out_data = pre_xor_data - FLASH_HW_KEY;
cmN_DWORDToBytes(pChar, out_data);
}
else if(type==)
{
in_data = in_data^FLASH_HW_KEY_3;
pre_xor_data = unMix_3(in_data);
out_data = pre_xor_data - FLASH_HW_KEY;
cmN_DWORDToBytes(pChar, out_data);
} ref_address += ;
pChar += ;
tmplength += ;
} pChar -= tmplength;
} #define BUF_SIZE 128 main(int argc,char *argv[])
{
char buf[BUF_SIZE];
char outFile[]; FILE *filein = fopen( argv[], "rb" );
if(filein == NULL) {
printf("open %s fail\n", argv[] );
return ;
}
memset(outFile,,);
sprintf(outFile,"decrypt_%s",argv[]+);
//printf("--->%s\n",outFile);
FILE *fileout=fopen(outFile, "wb" );
if(fileout == NULL) {
printf("open outfile fail\n" );
return ;
} while()
{
int ret = fread(buf, , BUF_SIZE, filein);
if(ret <=)
{
break;
}
hwDecodeRawDataForFlash( &buf[], BUF_SIZE, );
fwrite(buf, , BUF_SIZE, fileout);
}
fclose(filein);
fclose(fileout);
return ; }
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