2 // AuthorityKeyIdentifierExtension.cs: Handles X.509 AuthorityKeyIdentifier extensions.
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // Copyright (C) 2004-2005,2007 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
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14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
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30 using System.Globalization;
34 using Mono.Security.X509;
36 namespace Mono.Security.X509.Extensions {
39 * id-ce-authorityKeyIdentifier OBJECT IDENTIFIER ::= { id-ce 35 }
41 * AuthorityKeyIdentifier ::= SEQUENCE {
42 * keyIdentifier [0] KeyIdentifier OPTIONAL,
43 * authorityCertIssuer [1] GeneralNames OPTIONAL,
44 * authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL }
46 * KeyIdentifier ::= OCTET STRING
54 class AuthorityKeyIdentifierExtension : X509Extension {
58 public AuthorityKeyIdentifierExtension () : base ()
60 extnOid = "2.5.29.35";
63 public AuthorityKeyIdentifierExtension (ASN1 asn1) : base (asn1)
67 public AuthorityKeyIdentifierExtension (X509Extension extension) : base (extension)
71 protected override void Decode ()
73 ASN1 sequence = new ASN1 (extnValue.Value);
74 if (sequence.Tag != 0x30)
75 throw new ArgumentException ("Invalid AuthorityKeyIdentifier extension");
76 for (int i=0; i < sequence.Count; i++) {
77 ASN1 el = sequence [i];
83 // don't throw on stuff we don't yet support
84 // e.g. authorityCertIssuer/authorityCertSerialNumber
90 public override string Name {
91 get { return "Authority Key Identifier"; }
94 public byte[] Identifier {
98 return (byte[]) aki.Clone ();
102 public override string ToString ()
104 StringBuilder sb = new StringBuilder ();
108 sb.Append ("KeyID=");
109 while (x < aki.Length) {
110 sb.Append (aki [x].ToString ("X2", CultureInfo.InvariantCulture));
117 // [2] CertificateSerialNumber
120 return sb.ToString ();