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using System;
using Org.BouncyCastle.Utilities;
namespace Org.BouncyCastle.Asn1.X509
{
/**
* Targets structure used in target information extension for attribute
* certificates from RFC 3281.
*
* <pre>
* Targets ::= SEQUENCE OF Target
*
* Target ::= CHOICE {
* targetName [0] GeneralName,
* targetGroup [1] GeneralName,
* targetCert [2] TargetCert
* }
*
* TargetCert ::= SEQUENCE {
* targetCertificate IssuerSerial,
* targetName GeneralName OPTIONAL,
* certDigestInfo ObjectDigestInfo OPTIONAL
* }
* </pre>
*
* @see org.bouncycastle.asn1.x509.Target
* @see org.bouncycastle.asn1.x509.TargetInformation
*/
public class Targets
: Asn1Encodable
{
private readonly Asn1Sequence targets;
/**
* Creates an instance of a Targets from the given object.
* <p>
* <code>obj</code> can be a Targets or a {@link Asn1Sequence}</p>
*
* @param obj The object.
* @return A Targets instance.
* @throws ArgumentException if the given object cannot be interpreted as Target.
*/
public static Targets GetInstance(
object obj)
{
if (obj is Targets)
{
return (Targets) obj;
}
if (obj is Asn1Sequence)
{
return new Targets((Asn1Sequence) obj);
}
throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj), "obj");
}
/**
* Constructor from Asn1Sequence.
*
* @param targets The ASN.1 SEQUENCE.
* @throws ArgumentException if the contents of the sequence are
* invalid.
*/
private Targets(
Asn1Sequence targets)
{
this.targets = targets;
}
/**
* Constructor from given targets.
* <p>
* The ArrayList is copied.</p>
*
* @param targets An <code>ArrayList</code> of {@link Target}s.
* @see Target
* @throws ArgumentException if the ArrayList contains not only Targets.
*/
public Targets(
Target[] targets)
{
this.targets = new DerSequence(targets);
}
/**
* Returns the targets in an <code>ArrayList</code>.
* <p>
* The ArrayList is cloned before it is returned.</p>
*
* @return Returns the targets.
*/
public virtual Target[] GetTargets()
{
return targets.MapElements(Target.GetInstance);
}
/**
* Produce an object suitable for an Asn1OutputStream.
*
* Returns:
*
* <pre>
* Targets ::= SEQUENCE OF Target
* </pre>
*
* @return an Asn1Object
*/
public override Asn1Object ToAsn1Object()
{
return targets;
}
}
}
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