mcs/class/Mono.Security/Mono.Security.X509.Extensions/PrivateKeyUsagePeriodExtension.cs

   1 //
   2 // PrivateKeyUsagePeriodExtension.cs: Handles X.509 PrivateKeyUsagePeriod extensions.
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // (C) 2004 Novell (http://www.novell.com)
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Globalization;
  33 using System.Text;
  34
  35 using Mono.Security;
  36 using Mono.Security.X509;
  37
  38 namespace Mono.Security.X509.Extensions {
  39
  40         /*
  41          * id-ce-privateKeyUsagePeriod OBJECT IDENTIFIER ::=  { id-ce 16 }
  42          *
  43          * PrivateKeyUsagePeriod ::= SEQUENCE {
  44          *    notBefore       [0]     GeneralizedTime OPTIONAL,
  45          *    notAfter        [1]     GeneralizedTime OPTIONAL
  46          * }
  47          */
  48         public class PrivateKeyUsagePeriodExtension : X509Extension {
  49
  50                 private DateTime notBefore;
  51                 private DateTime notAfter;
  52
  53                 public PrivateKeyUsagePeriodExtension () : base ()
  54                 {
  55                         extnOid = "2.5.29.16";
  56                 }
  57
  58                 public PrivateKeyUsagePeriodExtension (ASN1 asn1) : base (asn1)
  59                 {
  60                 }
  61
  62                 public PrivateKeyUsagePeriodExtension (X509Extension extension) : base (extension)
  63                 {
  64                 }
  65
  66                 protected override void Decode ()
  67                 {
  68                         ASN1 sequence = new ASN1 (extnValue.Value);
  69                         if (sequence.Tag != 0x30)
  70                                 throw new ArgumentException ("Invalid PrivateKeyUsagePeriod extension");
  71                         for (int i=0; i < sequence.Count; i++) {
  72                                 switch (sequence [i].Tag) {
  73                                         case 0x80:
  74                                                 notBefore = ASN1Convert.ToDateTime (sequence [i]);
  75                                                 break;
  76                                         case 0x81:
  77                                                 notAfter = ASN1Convert.ToDateTime (sequence [i]);
  78                                                 break;
  79                                         default:
  80                                                 throw new ArgumentException ("Invalid PrivateKeyUsagePeriod extension");
  81                                 }
  82                         }
  83                 }
  84
  85                 public override string Name {
  86                         get { return "Private Key Usage Period"; }
  87                 }
  88
  89                 public override string ToString ()
  90                 {
  91                         StringBuilder sb = new StringBuilder ();
  92                         if (notBefore != DateTime.MinValue) {
  93                                 sb.Append ("Not Before: ");
  94                                 sb.Append (notBefore.ToString (CultureInfo.CurrentUICulture));
  95                                 sb.Append (Environment.NewLine);
  96                         }
  97                         if (notAfter != DateTime.MinValue) {
  98                                 sb.Append ("Not After: ");
  99                                 sb.Append (notAfter.ToString (CultureInfo.CurrentUICulture));
 100                                 sb.Append (Environment.NewLine);
 101                         }
 102                         return sb.ToString ();
 103                 }
 104         }
 105 }