int CheckCertSignaturePubKey(const byte* cert, word32 certSz, void* heap,
        const byte* pubKey, word32 pubKeySz, int pubKeyOID)
{
    return CheckCertSignature_ex(cert, certSz, heap, NULL,
            pubKey, pubKeySz, pubKeyOID, 0);
}
int CheckCertSignaturePubKey(const byte* cert, word32 certSz, void* heap,
        const byte* pubKey, word32 pubKeySz, int pubKeyOID)
{
    return CheckCertSignature_ex(cert, certSz, heap, NULL,
            pubKey, pubKeySz, pubKeyOID, 0);
}