Verifies an XML signature this realm made, against every XML signing certificate it holds.
the signed document
stsCrypto.verifyXmlSignature()'s options, less certPem
stsCrypto.verifyXmlSignature()
certPem
the first { ok: true } answer, or the current key's answer when none verifies
{ ok: true }
Verifies an XML signature this realm made, against every XML signing certificate it holds.