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package org.bouncycastle.asn1.crmf;
import org.bouncycastle.asn1.ASN1Choice;
import org.bouncycastle.asn1.ASN1Encodable;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERTaggedObject;
public class ProofOfPossession
extends ASN1Object
implements ASN1Choice
{
public static final int TYPE_RA_VERIFIED = 0;
public static final int TYPE_SIGNING_KEY = 1;
public static final int TYPE_KEY_ENCIPHERMENT = 2;
public static final int TYPE_KEY_AGREEMENT = 3;
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, true);
break;
default:
throw new IllegalArgumentException("unknown tag: " + tagNo);
}
}
public static ProofOfPossession getInstance(Object o)
{
if (o == null || o instanceof ProofOfPossession)
{
return (ProofOfPossession)o;
}
if (o instanceof ASN1TaggedObject)
{
return new ProofOfPossession((ASN1TaggedObject)o);
}
throw new IllegalArgumentException("Invalid object: " + o.getClass().getName());
}
/** Creates a ProofOfPossession with type raVerified. */
public ProofOfPossession()
{
tagNo = TYPE_RA_VERIFIED;
obj = DERNull.INSTANCE;
}
/** Creates a ProofOfPossession for a signing key. */
public ProofOfPossession(POPOSigningKey poposk)
{
tagNo = TYPE_SIGNING_KEY;
obj = poposk;
}
/**
* Creates a ProofOfPossession for key encipherment or agreement.
* @param type one of TYPE_KEY_ENCIPHERMENT or TYPE_KEY_AGREEMENT
*/
public ProofOfPossession(int type, POPOPrivKey privkey)
{
tagNo = type;
obj = privkey;
}
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 ASN1Primitive toASN1Primitive()
{
return new DERTaggedObject(false, tagNo, obj);
}
}
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