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package org.bouncycastle.asn1.x509;
import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
/**
* The Holder object.
* <p>
* For an v2 attribute certificate this is:
*
* <pre>
* Holder ::= SEQUENCE {
* baseCertificateID [0] IssuerSerial OPTIONAL,
* -- the issuer and serial number of
* -- the holder's Public Key Certificate
* entityName [1] GeneralNames OPTIONAL,
* -- the name of the claimant or role
* objectDigestInfo [2] ObjectDigestInfo OPTIONAL
* -- used to directly authenticate the holder,
* -- for example, an executable
* }
* </pre>
*
* <p>
* For an v1 attribute certificate this is:
*
* <pre>
* subject CHOICE {
* baseCertificateID [0] EXPLICIT IssuerSerial,
* -- associated with a Public Key Certificate
* subjectName [1] EXPLICIT GeneralNames },
* -- associated with a name
* </pre>
*/
public class Holder
extends ASN1Object
{
public static final int V1_CERTIFICATE_HOLDER = 0;
public static final int V2_CERTIFICATE_HOLDER = 1;
IssuerSerial baseCertificateID;
GeneralNames entityName;
ObjectDigestInfo objectDigestInfo;
private int version = V2_CERTIFICATE_HOLDER;
public static Holder getInstance(Object obj)
{
if (obj instanceof Holder)
{
return (Holder)obj;
}
else if (obj instanceof ASN1TaggedObject)
{
return new Holder(ASN1TaggedObject.getInstance(obj));
}
else if (obj != null)
{
return new Holder(ASN1Sequence.getInstance(obj));
}
return null;
}
/**
* Constructor for a holder for an V1 attribute certificate.
*
* @param tagObj The ASN.1 tagged holder object.
*/
private Holder(ASN1TaggedObject tagObj)
{
switch (tagObj.getTagNo())
{
case 0:
baseCertificateID = IssuerSerial.getInstance(tagObj, true);
break;
case 1:
entityName = GeneralNames.getInstance(tagObj, true);
break;
default:
throw new IllegalArgumentException("unknown tag in Holder");
}
version = 0;
}
/**
* Constructor for a holder for an V2 attribute certificate.
*
* @param seq The ASN.1 sequence.
*/
private Holder(ASN1Sequence seq)
{
if (seq.size() > 3)
{
throw new IllegalArgumentException("Bad sequence size: "
+ seq.size());
}
for (int i = 0; i != seq.size(); i++)
{
ASN1TaggedObject tObj = ASN1TaggedObject.getInstance(seq
.getObjectAt(i));
switch (tObj.getTagNo())
{
case 0:
baseCertificateID = IssuerSerial.getInstance(tObj, false);
break;
case 1:
entityName = GeneralNames.getInstance(tObj, false);
break;
case 2:
objectDigestInfo = ObjectDigestInfo.getInstance(tObj, false);
break;
default:
throw new IllegalArgumentException("unknown tag in Holder");
}
}
version = 1;
}
public Holder(IssuerSerial baseCertificateID)
{
this(baseCertificateID, V2_CERTIFICATE_HOLDER);
}
/**
* Constructs a holder from a IssuerSerial for a V1 or V2 certificate.
* .
* @param baseCertificateID The IssuerSerial.
* @param version The version of the attribute certificate.
*/
public Holder(IssuerSerial baseCertificateID, int version)
{
this.baseCertificateID = baseCertificateID;
this.version = version;
}
/**
* Returns 1 for V2 attribute certificates or 0 for V1 attribute
* certificates.
* @return The version of the attribute certificate.
*/
public int getVersion()
{
return version;
}
/**
* Constructs a holder with an entityName for V2 attribute certificates.
*
* @param entityName The entity or subject name.
*/
public Holder(GeneralNames entityName)
{
this(entityName, V2_CERTIFICATE_HOLDER);
}
/**
* Constructs a holder with an entityName for V2 attribute certificates or
* with a subjectName for V1 attribute certificates.
*
* @param entityName The entity or subject name.
* @param version The version of the attribute certificate.
*/
public Holder(GeneralNames entityName, int version)
{
this.entityName = entityName;
this.version = version;
}
/**
* Constructs a holder from an object digest info.
*
* @param objectDigestInfo The object digest info object.
*/
public Holder(ObjectDigestInfo objectDigestInfo)
{
this.objectDigestInfo = objectDigestInfo;
}
public IssuerSerial getBaseCertificateID()
{
return baseCertificateID;
}
/**
* Returns the entityName for an V2 attribute certificate or the subjectName
* for an V1 attribute certificate.
*
* @return The entityname or subjectname.
*/
public GeneralNames getEntityName()
{
return entityName;
}
public ObjectDigestInfo getObjectDigestInfo()
{
return objectDigestInfo;
}
public ASN1Primitive toASN1Primitive()
{
if (version == 1)
{
ASN1EncodableVector v = new ASN1EncodableVector();
if (baseCertificateID != null)
{
v.add(new DERTaggedObject(false, 0, baseCertificateID));
}
if (entityName != null)
{
v.add(new DERTaggedObject(false, 1, entityName));
}
if (objectDigestInfo != null)
{
v.add(new DERTaggedObject(false, 2, objectDigestInfo));
}
return new DERSequence(v);
}
else
{
if (entityName != null)
{
return new DERTaggedObject(true, 1, entityName);
}
else
{
return new DERTaggedObject(true, 0, baseCertificateID);
}
}
}
}
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