2 // ExtendedKeyUsageExtension.cs: Handles X.509 ExtendedKeyUsage extensions.
5 // Sebastien Pouliot <sebastien@ximian.com>
7 // (C) 2003 Motus Technologies Inc. (http://www.motus.com)
8 // (C) 2004 Novell (http://www.novell.com)
12 // Permission is hereby granted, free of charge, to any person obtaining
13 // a copy of this software and associated documentation files (the
14 // "Software"), to deal in the Software without restriction, including
15 // without limitation the rights to use, copy, modify, merge, publish,
16 // distribute, sublicense, and/or sell copies of the Software, and to
17 // permit persons to whom the Software is furnished to do so, subject to
18 // the following conditions:
20 // The above copyright notice and this permission notice shall be
21 // included in all copies or substantial portions of the Software.
23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 using System
.Collections
;
37 using Mono
.Security
.X509
;
39 namespace Mono
.Security
.X509
.Extensions
{
42 * id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 }
44 * ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
46 * KeyPurposeId ::= OBJECT IDENTIFIER
49 public class ExtendedKeyUsageExtension
: X509Extension
{
51 private ArrayList keyPurpose
;
53 public ExtendedKeyUsageExtension () : base ()
55 extnOid
= "2.5.29.37";
56 keyPurpose
= new ArrayList ();
59 public ExtendedKeyUsageExtension (ASN1 asn1
) : base (asn1
)
63 public ExtendedKeyUsageExtension (X509Extension extension
) : base (extension
)
67 protected override void Decode ()
69 keyPurpose
= new ArrayList ();
70 ASN1 sequence
= new ASN1 (extnValue
.Value
);
71 if (sequence
.Tag
!= 0x30)
72 throw new ArgumentException ("Invalid ExtendedKeyUsage extension");
73 // for every policy OID
74 for (int i
=0; i
< sequence
.Count
; i
++)
75 keyPurpose
.Add (ASN1Convert
.ToOid (sequence
[i
]));
78 protected override void Encode ()
80 if (extnValue
== null) {
81 extnValue
= new ASN1 (0x30);
82 foreach (string oid
in keyPurpose
) {
83 extnValue
.Add (ASN1Convert
.FromOid (oid
));
88 public ArrayList KeyPurpose
{
89 get { return keyPurpose; }
92 public override string Name
{
93 get { return "Extended Key Usage"; }
96 // serverAuth 1.3.6.1.5.5.7.3.1
97 // clientAuth 1.3.6.1.5.5.7.3.2
98 // codeSigning 1.3.6.1.5.5.7.3.3
99 // emailProtection 1.3.6.1.5.5.7.3.4
100 // timeStamping 1.3.6.1.5.5.7.3.8
101 // OCSPSigning 1.3.6.1.5.5.7.3.9
102 public override string ToString ()
104 StringBuilder sb
= new StringBuilder ();
105 foreach (string s
in keyPurpose
) {
107 case "1.3.6.1.5.5.7.3.1":
108 sb
.Append ("Server Authentication");
110 case "1.3.6.1.5.5.7.3.2":
111 sb
.Append ("Client Authentication");
113 case "1.3.6.1.5.5.7.3.3":
114 sb
.Append ("Code Signing");
116 case "1.3.6.1.5.5.7.3.4":
117 sb
.Append ("Email Protection");
119 case "1.3.6.1.5.5.7.3.8":
120 sb
.Append ("Time Stamping");
122 case "1.3.6.1.5.5.7.3.9":
123 sb
.Append ("OCSP Signing");
126 sb
.Append ("unknown");
129 sb
.AppendFormat (" ({0}){1}", s
, Environment
.NewLine
);
131 return sb
.ToString ();