if (seq.size() > 1
&& seq.getObjectAt(0) instanceof DERObjectIdentifier)
{
if (seq.getObjectAt(0).equals(PKCSObjectIdentifiers.signedData))
{
sData = new SignedData(ASN1Sequence.getInstance(
(ASN1TaggedObject)seq.getObjectAt(1), true)).getCertificates();
return getCertificate();
}
}