try
{
ASN1Sequence s = (ASN1Sequence)aIn.readObject();
this.currentSpec = new IESParameterSpec(
((ASN1OctetString)s.getObjectAt(0)).getOctets(),
((ASN1OctetString)s.getObjectAt(0)).getOctets(),
((DERInteger)s.getObjectAt(0)).getValue().intValue());
}
catch (ClassCastException e)