[Selfext-user] Protection of SFX

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<html><div style='background-color:'><DIV>Hello,</DIV>
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<DIV>I would like to protect my SFX from being able to be opened by other archivers like WinZip. I want to do it simply by removing the first 4 bytes ("MSCF") from the cabinet, then in file_read(), add the 4 bytes to the buffer temporarily. I have tried to do this .. but seems it only retrieves the header information, but NOT extracting the files inside.</DIV>
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<DIV>FNREAD(file_read)<BR>{ <BR>&nbsp;DWORD rslt;<BR>&nbsp;if(SetFilePointer(GetHandle(hf), 0, 0, FILE_CURRENT)==g_iExeSize+8)<BR>&nbsp;{<BR>&nbsp;&nbsp;char* cTmp = (char*) pv;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; lstrcpy(cTmp, "MSCF");<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; ReadFile(GetHandle(hf), &amp;cTmp[4], cb-4, &amp;rslt, NULL); <BR>&nbsp;&nbsp;return (rslt+4);<BR>&nbsp;} else<BR>&nbsp;{<BR>&nbsp;&nbsp;ReadFile(GetHandle(hf), pv, cb, &amp;rslt, NULL); <BR>&nbsp;&nbsp;return rslt; <BR>&nbsp;}<BR>}<BR></DIV>
<DIV>What's wrong? Can somebody please help me?</DIV>
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<DIV>Kei</DIV>
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