hx509_cert_cmp
ret = hx509_cert_cmp(cert, cp->cert);
if (hx509_cert_cmp(q->path->val[i], cert) == 0)
hx509_cert_cmp (
if (hx509_cert_cmp(signer, parent) != 0) {
if (hx509_cert_cmp(ctx->parent, parent) != 0) {