private PKMACValue publicKeyMAC;
private SubjectPublicKeyInfo publicKey;
private POPOSigningKeyInput(ASN1Sequence seq)
{
ASN1Encodable authInfo = (ASN1Encodable)seq.getObjectAt(0);
if (authInfo instanceof ASN1TaggedObject)
{
ASN1TaggedObject tagObj = (ASN1TaggedObject)authInfo;
if (tagObj.getTagNo() != 0)