Problem - Kevin Tafuro

cbWrite = (dwFileSize > cbBuffer ? cbBuffer : dwFileSize);
for (cbTotalWritten = 0; cbWrite > 0; cbTotalWritten += cbWritten)
if (!WriteFile(hFile, pbBuffer + cbTotalWritten, cbWrite - cbTotalWritten,
&cbWritten, 0)) return FALSE;
dwFileSize -= cbTotalWritten;
}
return TRUE;
}
BOOL SpcWipeFile(HANDLE hFile) {
BYTE pbBuffer[SPC_WIPE_BUFSIZE];
DWORD dwCount, dwFileSize, dwIndex, dwPass;
HCRYPTPROV hProvider;
static BYTE pbSinglePats[16] = {
0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff
};
static BYTE pbTriplePats[6][3] = {
{ 0x92, 0x49, 0x24 }, { 0x49, 0x24, 0x92 }, { 0x24, 0x92, 0x49 },
{ 0x6d, 0xb6, 0xdb }, { 0xb6, 0xdb, 0x6d }, { 0xdb, 0x6d, 0xb6 }
};
static DWORD cbPattern = sizeof(pbTriplePats[0]);
if ((dwFileSize = GetFileSize(hFile, 0)) = = INVALID_FILE_SIZE) return FALSE;
if (!dwFileSize) return TRUE;
if (!CryptAcquireContext(&hProvider, 0, 0, 0, CRYPT_VERIFYCONTEXT))
return FALSE;
for (dwPass = 0; dwPass < 4; dwPass++)
if (!RandomPass(hFile, hProvider, dwFileSize)) {
CryptReleaseContext(hProvider, 0);
return FALSE;
}
memset(pbBuffer, pbSinglePats[5], sizeof(pbBuffer));
if (!PatternPass(hFile, pbBuffer, sizeof(pbBuffer), dwFileSize)) {
CryptReleaseContext(hProvider, 0);
return FALSE;
}
memset(pbBuffer, pbSinglePats[10], sizeof(pbBuffer));
if (!PatternPass(hFile, pbBuffer, sizeof(pbBuffer), dwFileSize)) {
CryptReleaseContext(hProvider, 0);
return FALSE;
}
cbPattern = sizeof(pbTriplePats[0]);
for (dwPass = 0; dwPass < 3; dwPass++) {
dwCount = sizeof(pbBuffer) / cbPattern;
for (dwIndex = 0; dwIndex < dwCount; dwIndex++)
CopyMemory(pbBuffer + (dwIndex * cbPattern), pbTriplePats[dwPass],
cbPattern);
if (!PatternPass(hFile, pbBuffer, cbPattern * dwCount, dwFileSize)) {
52 | Chapter 2: Access Control
This is the Title of the Book, eMatter Edition
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