Function GetPathHash

libcppcryptfs/util/util.cpp:619–667

BOOL GetPathHash(LPCWSTR path, wstring& hashstr)
{

	hashstr = L"";

	wstring ucpath;

	if (!touppercase(path, ucpath))
		return FALSE;

	size_t len = ucpath.length();

	while (len > 3) {
		
		if (ucpath[len - 1] == '\\') {
			ucpath.resize(len - 1);
		} else {
			break;
		}
		len = ucpath.length();
	}

	if (len < 1)
		return FALSE;

	path = ucpath.c_str();

	string str;

	if (!unicode_to_utf8(path, str))
		return FALSE;

	BYTE sum[32];

	if (!sha256(str, sum))
		return FALSE;

	int i;

	// use only 128bits of the sha256 to keep registry key length shorter

	for (i = 0; i < 16; i++) {
		WCHAR buf[3];
		swprintf_s(buf, L"%02x", sum[i]);
		hashstr += buf;
	}

	return TRUE;
}

void SetOverlapped(LPOVERLAPPED pOv, LONGLONG offset)
{