package com.google.bitcoin.bouncycastle.asn1.crmf; import com.google.bitcoin.bouncycastle.asn1.ASN1Choice; import com.google.bitcoin.bouncycastle.asn1.ASN1Encodable; import com.google.bitcoin.bouncycastle.asn1.ASN1TaggedObject; import com.google.bitcoin.bouncycastle.asn1.DERNull; import com.google.bitcoin.bouncycastle.asn1.DERObject; import com.google.bitcoin.bouncycastle.asn1.DERTaggedObject; public class ProofOfPossession extends ASN1Encodable implements ASN1Choice { private int tagNo; private ASN1Encodable obj; private ProofOfPossession(ASN1TaggedObject tagged) { tagNo = tagged.getTagNo(); switch (tagNo) { case 0: obj = DERNull.INSTANCE; break; case 1: obj = POPOSigningKey.getInstance(tagged, false); break; case 2: case 3: obj = POPOPrivKey.getInstance(tagged, false); break; default: throw new IllegalArgumentException("unknown tag: " + tagNo); } } public static ProofOfPossession getInstance(Object o) { if (o instanceof ProofOfPossession) { return (ProofOfPossession)o; } if (o instanceof ASN1TaggedObject) { return new ProofOfPossession((ASN1TaggedObject)o); } throw new IllegalArgumentException("Invalid object: " + o.getClass().getName()); } public int getType() { return tagNo; } public ASN1Encodable getObject() { return obj; } /** * <pre> * ProofOfPossession ::= CHOICE { * raVerified [0] NULL, * -- used if the RA has already verified that the requester is in * -- possession of the private key * signature [1] POPOSigningKey, * keyEncipherment [2] POPOPrivKey, * keyAgreement [3] POPOPrivKey } * </pre> * @return a basic ASN.1 object representation. */ public DERObject toASN1Object() { return new DERTaggedObject(false, tagNo, obj); } }