int VerifyCRL_Signature(SignatureCtx* sigCtx, const byte* toBeSigned,
                        word32 tbsSz, const byte* signature, word32 sigSz,
                        word32 signatureOID, Signer *ca, void* heap)
{
    /* try to confirm/verify signature */
#ifndef IGNORE_KEY_EXTENSIONS
    if ((ca->keyUsage & KEYUSE_CRL_SIGN) == 0) {
        WOLFSSL_MSG("CA cannot sign CRLs");
        return ASN_CRL_NO_SIGNER_E;
    }
#endif /* IGNORE_KEY_EXTENSIONS */

    InitSignatureCtx(sigCtx, heap, INVALID_DEVID);
    if (ConfirmSignature(sigCtx, toBeSigned, tbsSz, ca->publicKey,
                         ca->pubKeySize, ca->keyOID, signature, sigSz,
                         signatureOID, NULL) != 0) {
        WOLFSSL_MSG("CRL Confirm signature failed");
        return ASN_CRL_CONFIRM_E;
    }

    return 0;
}
int VerifyCRL_Signature(SignatureCtx* sigCtx, const byte* toBeSigned,
                        word32 tbsSz, const byte* signature, word32 sigSz,
                        word32 signatureOID, Signer *ca, void* heap)
{
     
#ifndef IGNORE_KEY_EXTENSIONS
    if ((ca->keyUsage & KEYUSE_CRL_SIGN) == 0) {
        WOLFSSL_MSG("CA cannot sign CRLs");
        return ASN_CRL_NO_SIGNER_E;
    }
#endif  

    InitSignatureCtx(sigCtx, heap, INVALID_DEVID);
    if (ConfirmSignature(sigCtx, toBeSigned, tbsSz, ca->publicKey,
                         ca->pubKeySize, ca->keyOID, signature, sigSz,
                         signatureOID, NULL) != 0) {
        WOLFSSL_MSG("CRL Confirm signature failed");
        return ASN_CRL_CONFIRM_E;
    }

    return 0;
}