BOOL checkfile(PCWSTR lpFileName)
{
    static GUID gActionID = WINTRUST_ACTION_GENERIC_VERIFY_V2;
    HCATADMIN hCatAdmin;
    BOOL fVerified = FALSE;
    if (CryptCATAdminAcquireContext(&hCatAdmin, 0, 0))
    {
        HANDLE hFile = CreateFileW(lpFileName, FILE_GENERIC_READ, FILE_SHARE_READ, 0, OPEN_EXISTING, 0, 0);
        if (hFile != INVALID_HANDLE_VALUE)
        {
            BYTE bHash[20];
            CATALOG_INFO ci = { sizeof (CATALOG_INFO) };

            WINTRUST_CATALOG_INFO wci = {
                sizeof(WINTRUST_CATALOG_INFO), 0, ci.wszCatalogFile, 0,
                0, hFile, bHash, sizeof(bHash)
            };

            WINTRUST_DATA wtd = {
                sizeof (WINTRUST_DATA),0,0,
                WTD_UI_NONE,WTD_REVOKE_NONE,
                WTD_CHOICE_CATALOG, (PWINTRUST_FILE_INFO)&wci
            };

            wtd.dwProvFlags=WTD_REVOCATION_CHECK_NONE;

            if (CryptCATAdminCalcHashFromFileHandle(hFile, &wci.cbCalculatedFileHash, bHash, 0))
            {
                HCATINFO CatInfo = 0;

                while (CatInfo = CryptCATAdminEnumCatalogFromHash(hCatAdmin, bHash, wci.cbCalculatedFileHash, 0, &CatInfo))
                {
                    if (CryptCATCatalogInfoFromContext(CatInfo, &ci, 0))
                    {
                        DbgPrint("%S\n", ci.wszCatalogFile);
                        if (fVerified = !WinVerifyTrust(0, &gActionID, &wtd)) break;
                    }
                }

                if (CatInfo) CryptCATAdminReleaseCatalogContext(hCatAdmin, CatInfo, 0);
            }
            CloseHandle(hFile);
        }
        CryptCATAdminReleaseContext(hCatAdmin, 0);
    }
    return fVerified;
}