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