137 lines
3.6 KiB
C#
137 lines
3.6 KiB
C#
//
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// AuthorityKeyIdentifierExtension.cs: Handles X.509 AuthorityKeyIdentifier extensions.
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//
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// Author:
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// Sebastien Pouliot <sebastien@ximian.com>
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//
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// Copyright (C) 2004-2005,2007 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Globalization;
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using System.Text;
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using Mono.Security;
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using Mono.Security.X509;
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namespace Mono.Security.X509.Extensions {
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/*
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* id-ce-authorityKeyIdentifier OBJECT IDENTIFIER ::= { id-ce 35 }
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*
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* AuthorityKeyIdentifier ::= SEQUENCE {
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* keyIdentifier [0] KeyIdentifier OPTIONAL,
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* authorityCertIssuer [1] GeneralNames OPTIONAL,
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* authorityCertSerialNumber [2] CertificateSerialNumber OPTIONAL }
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*
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* KeyIdentifier ::= OCTET STRING
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*/
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#if INSIDE_SYSTEM
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internal
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#else
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public
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#endif
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class AuthorityKeyIdentifierExtension : X509Extension {
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private byte[] aki;
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public AuthorityKeyIdentifierExtension () : base ()
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{
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extnOid = "2.5.29.35";
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}
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public AuthorityKeyIdentifierExtension (ASN1 asn1) : base (asn1)
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{
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}
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public AuthorityKeyIdentifierExtension (X509Extension extension) : base (extension)
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{
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}
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protected override void Decode ()
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{
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ASN1 sequence = new ASN1 (extnValue.Value);
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if (sequence.Tag != 0x30)
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throw new ArgumentException ("Invalid AuthorityKeyIdentifier extension");
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for (int i=0; i < sequence.Count; i++) {
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ASN1 el = sequence [i];
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switch (el.Tag) {
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case 0x80:
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aki = el.Value;
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break;
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default:
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// don't throw on stuff we don't yet support
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// e.g. authorityCertIssuer/authorityCertSerialNumber
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break;
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}
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}
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}
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protected override void Encode ()
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{
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ASN1 seq = new ASN1 (0x30);
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if (aki == null) {
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throw new InvalidOperationException ("Invalid AuthorityKeyIdentifier extension");
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}
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seq.Add (new ASN1 (0x80, aki));
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extnValue = new ASN1 (0x04);
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extnValue.Add (seq);
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}
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public override string Name {
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get { return "Authority Key Identifier"; }
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}
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public byte[] Identifier {
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get {
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if (aki == null)
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return null;
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return (byte[]) aki.Clone ();
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}
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set { aki = value; }
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}
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public override string ToString ()
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{
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StringBuilder sb = new StringBuilder ();
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if (aki != null) {
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// [0] KeyIdentifier
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int x = 0;
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sb.Append ("KeyID=");
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while (x < aki.Length) {
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sb.Append (aki [x].ToString ("X2", CultureInfo.InvariantCulture));
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if (x % 2 == 1)
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sb.Append (" ");
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x++;
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}
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// [1] GeneralNames
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// TODO
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// [2] CertificateSerialNumber
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// TODO
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}
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return sb.ToString ();
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}
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}
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}
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