108 lines
2.4 KiB
C#
108 lines
2.4 KiB
C#
using System;
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using System.Collections;
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namespace Org.BouncyCastle.Asn1.X509
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{
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/**
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* The extendedKeyUsage object.
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* <pre>
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* extendedKeyUsage ::= Sequence SIZE (1..MAX) OF KeyPurposeId
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* </pre>
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*/
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public class ExtendedKeyUsage
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: Asn1Encodable
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{
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internal readonly Hashtable usageTable = new Hashtable();
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internal readonly Asn1Sequence seq;
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public static ExtendedKeyUsage GetInstance(
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Asn1TaggedObject obj,
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bool explicitly)
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{
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return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
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}
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public static ExtendedKeyUsage GetInstance(
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object obj)
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{
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if (obj is ExtendedKeyUsage)
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{
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return (ExtendedKeyUsage) obj;
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}
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if (obj is Asn1Sequence)
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{
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return new ExtendedKeyUsage((Asn1Sequence) obj);
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}
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if (obj is X509Extension)
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{
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return GetInstance(X509Extension.ConvertValueToObject((X509Extension) obj));
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}
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throw new ArgumentException("Invalid ExtendedKeyUsage: " + obj.GetType().Name);
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}
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private ExtendedKeyUsage(
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Asn1Sequence seq)
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{
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this.seq = seq;
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foreach (object o in seq)
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{
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if (!(o is DerObjectIdentifier))
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throw new ArgumentException("Only DerObjectIdentifier instances allowed in ExtendedKeyUsage.");
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this.usageTable.Add(o, o);
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}
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}
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public ExtendedKeyUsage(
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ArrayList usages)
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{
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Asn1EncodableVector v = new Asn1EncodableVector();
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foreach (Asn1Object o in usages)
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{
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v.Add(o);
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this.usageTable.Add(o, o);
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}
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this.seq = new DerSequence(v);
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}
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public bool HasKeyPurposeId(
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KeyPurposeID keyPurposeId)
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{
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return usageTable[keyPurposeId] != null;
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}
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/**
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* Returns all extended key usages.
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* The returned ArrayList contains DerObjectIdentifier instances.
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* @return An ArrayList with all key purposes.
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*/
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public ArrayList GetUsages()
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{
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return new ArrayList(usageTable.Values);
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}
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[Obsolete("Use 'Count' property instead")]
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public int Size
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{
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get { return usageTable.Count; }
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}
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public int Count
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{
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get { return usageTable.Count; }
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}
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public override Asn1Object ToAsn1Object()
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{
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return seq;
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}
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}
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}
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