// CMP implementation copyright (c) 2003 NOVOSEC AG (http://www.novosec.com)
//
// Author: Maik Stohn
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
// BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
package com.novosec.pkix.asn1.crmf;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEREncodable;
import org.bouncycastle.asn1.DERNull;
import org.bouncycastle.asn1.DERObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERTaggedObject;
/**
* ASN.1 structure DER En/DeCoder.
*
* <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>
*/
public class ProofOfPossession implements DEREncodable
{
DEREncodable obj;
int tag;
public ProofOfPossession( DEREncodable obj, int tag )
{
this.obj = obj;
this.tag = tag;
}
public DERNull getRaVerified()
{
if( this.tag != 0 ) {
return null;
}
// This can sometimes be a 0 length Octet string it seems
if (obj instanceof DEROctetString) {
//DEROctetString o = (DEROctetString) obj;
return new DERNull();
}
return (DERNull)this.obj;
}
public POPOSigningKey getSignature()
{
if( this.tag != 1 ) {
return null;
}
return (POPOSigningKey)this.obj;
}
public POPOPrivKey getKeyEncipherment()
{
if( this.tag != 2 ) {
return null;
}
return (POPOPrivKey)this.obj;
}
public POPOPrivKey getKeyAgreement()
{
if( this.tag != 3 ) {
return null;
}
return (POPOPrivKey)this.obj;
}
public static ProofOfPossession getInstance( DERObject obj )
{
return getInstance( (ASN1TaggedObject)obj, true );
}
public static ProofOfPossession getInstance( ASN1TaggedObject tagObj, boolean explicit )
{
int tag = tagObj.getTagNo();
switch (tag)
{
case 0: return new ProofOfPossession(tagObj.getObject(), 0);
case 1: return new ProofOfPossession(POPOSigningKey.getInstance(tagObj.getObject()), 1);
case 2: return new ProofOfPossession(POPOPrivKey.getInstance(tagObj.getObject()), 2);
case 3: return new ProofOfPossession(POPOPrivKey.getInstance(tagObj.getObject()), 3);
}
throw new IllegalArgumentException("unknown tag: " + tag);
}
public DERObject getDERObject()
{
return new DERTaggedObject(true, tag, obj); //tag explicit since we are in a choice
}
public String toString()
{
return "ProofOfPossession: (" + obj + ")";
}
}