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Devin Jankowski
2023-06-21 12:46:23 -04:00
commit c70248a520
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257
iTechSharp/srcbc/asn1/x509/Holder.cs Normal file
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using System;
namespace Org.BouncyCastle.Asn1.X509
{
/**
* 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>
* <p>
* For an v1 attribute certificate this is:
*
* <pre>
* subject CHOICE {
* baseCertificateID [0] IssuerSerial,
* -- associated with a Public Key Certificate
* subjectName [1] GeneralNames },
* -- associated with a name
* </pre>
* </p>
*/
public class Holder
: Asn1Encodable
{
internal readonly IssuerSerial baseCertificateID;
internal readonly GeneralNames entityName;
internal readonly ObjectDigestInfo objectDigestInfo;
private readonly int version;
public static Holder GetInstance(
object obj)
{
if (obj is Holder)
{
return (Holder) obj;
}
if (obj is Asn1Sequence)
{
return new Holder((Asn1Sequence) obj);
}
if (obj is Asn1TaggedObject)
{
return new Holder((Asn1TaggedObject) obj);
}
throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
}
/**
* Constructor for a holder for an v1 attribute certificate.
*
* @param tagObj The ASN.1 tagged holder object.
*/
public Holder(
Asn1TaggedObject tagObj)
{
switch (tagObj.TagNo)
{
case 0:
baseCertificateID = IssuerSerial.GetInstance(tagObj, false);
break;
case 1:
entityName = GeneralNames.GetInstance(tagObj, false);
break;
default:
throw new ArgumentException("unknown tag in Holder");
}
this.version = 0;
}
/**
* Constructor for a holder for an v2 attribute certificate. *
*
* @param seq The ASN.1 sequence.
*/
private Holder(
Asn1Sequence seq)
{
if (seq.Count > 3)
throw new ArgumentException("Bad sequence size: " + seq.Count);
for (int i = 0; i != seq.Count; i++)
{
Asn1TaggedObject tObj = Asn1TaggedObject.GetInstance(seq[i]);
switch (tObj.TagNo)
{
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 ArgumentException("unknown tag in Holder");
}
}
this.version = 1;
}
public Holder(
IssuerSerial baseCertificateID)
: this(baseCertificateID, 1)
{
}
/**
* Constructs a holder from a IssuerSerial.
* @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 Version
{
get { return version; }
}
/**
* 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.
*/
public Holder(
GeneralNames entityName)
: this(entityName, 1)
{
}
/**
* 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;
this.version = 1;
}
public IssuerSerial BaseCertificateID
{
get { 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 EntityName
{
get { return entityName; }
}
public ObjectDigestInfo ObjectDigestInfo
{
get { return objectDigestInfo; }
}
/**
* The Holder object.
* <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>
*/
public override Asn1Object ToAsn1Object()
{
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);
}
if (entityName != null)
{
return new DerTaggedObject(false, 1, entityName);
}
return new DerTaggedObject(false, 0, baseCertificateID);
}
}
}