2 // X509IssuerSerialKeyIdentifierClause.cs
5 // Atsushi Enomoto <atsushi@ximian.com>
7 // Copyright (C) 2005-2006 Novell, Inc. http://www.novell.com
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14 // permit persons to whom the Software is furnished to do so, subject to
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17 // The above copyright notice and this permission notice shall be
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29 using System.Collections.Generic;
30 using System.Security.Cryptography.X509Certificates;
35 namespace System.IdentityModel.Tokens
37 public class X509IssuerSerialKeyIdentifierClause : SecurityKeyIdentifierClause
39 static byte [] FromBinHex (string s)
41 byte [] bytes = new byte [s.Length / 2];
42 for (int i = 0; i < bytes.Length; i++)
43 bytes [i] = (byte) (DecodeHex (s [i * 2]) * 16 + DecodeHex (s [i * 2 + 1]));
47 static byte DecodeHex (char c)
49 return (byte) (c <= '9' ? c - '0' : c <= 'F' ? c - 'A' + 10 : c - 'a' + 10);
52 static string ToDecimalString (string hexString)
55 throw new NotImplementedException ();
57 // http://tools.ietf.org/html/rfc5280#section-4.1.2.2
58 // We SHOULD support negative numbers
59 var bytes = FromBinHex (hexString);
61 var negative = bytes.Length > 0 && bytes [0] >= 0x80;
63 for (int i = 0; i < bytes.Length; i++)
64 bytes [i] = (byte) ~ bytes [i];
67 var big = new BigInteger (bytes);
70 return "-" + big.ToString ();
72 return big.ToString ();
76 public X509IssuerSerialKeyIdentifierClause (X509Certificate2 certificate)
79 if (certificate == null)
80 throw new ArgumentNullException ("certificate");
81 name = certificate.IssuerName.Name;
82 serial = ToDecimalString (certificate.SerialNumber);
85 public X509IssuerSerialKeyIdentifierClause (string issuerName, string issuerSerialNumber)
89 serial = issuerSerialNumber;
94 public string IssuerName {
98 public string IssuerSerialNumber {
99 get { return serial; }
102 public override bool Matches (SecurityKeyIdentifierClause clause)
104 X509IssuerSerialKeyIdentifierClause other =
105 clause as X509IssuerSerialKeyIdentifierClause;
106 return other != null && Matches (other.name, other.serial);
109 public bool Matches (X509Certificate2 certificate)
111 return name == certificate.IssuerName.Name &&
112 serial == ToDecimalString (certificate.SerialNumber);
115 public bool Matches (string issuerName, string issuerSerialNumber)
117 return name == issuerName && serial == issuerSerialNumber;
121 public override string ToString ()
123 return base.ToString ();