verify

static VALUE
ossl_x509_verify(VALUE self, VALUE key)
{
    X509 *x509;
    EVP_PKEY *pkey;
    int i;

    pkey = GetPKeyPtr(key); /* NO NEED TO DUP */
    GetX509(self, x509);
    if ((i = X509_verify(x509, pkey)) < 0) {
        ossl_raise(eX509CertError, NULL);
    }
    if (i > 0) {
        return Qtrue;
    }

    return Qfalse;
}