mcs/class/System/Mono.Btls/MonoBtlsKey.cs

   1 //
   2 // MonoBtlsKey.cs
   3 //
   4 // Author:
   5 //       Martin Baulig <martin.baulig@xamarin.com>
   6 //
   7 // Copyright (c) 2016 Xamarin Inc. (http://www.xamarin.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining a copy
  10 // of this software and associated documentation files (the "Software"), to deal
  11 // in the Software without restriction, including without limitation the rights
  12 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13 // copies of the Software, and to permit persons to whom the Software is
  14 // furnished to do so, subject to the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be included in
  17 // all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  25 // THE SOFTWARE.
  26 #if SECURITY_DEP && MONO_FEATURE_BTLS
  27 #if MONO_SECURITY_ALIAS
  28 extern alias MonoSecurity;
  29 using MX = MonoSecurity::Mono.Security.Cryptography;
  30 #else
  31 using MX = Mono.Security.Cryptography;
  32 #endif
  33 using System;
  34 using System.IO;
  35 using System.Text;
  36 using System.Runtime.InteropServices;
  37 using System.Runtime.CompilerServices;
  38
  39 namespace Mono.Btls
  40 {
  41         class MonoBtlsKey : MonoBtlsObject
  42         {
  43                 internal class BoringKeyHandle : MonoBtlsHandle
  44                 {
  45                         internal BoringKeyHandle (IntPtr handle)
  46                                 : base (handle, true)
  47                         {
  48                         }
  49
  50                         protected override bool ReleaseHandle ()
  51                         {
  52                                 mono_btls_key_free (handle);
  53                                 return true;
  54                         }
  55                 }
  56
  57
  58                 [DllImport (BTLS_DYLIB)]
  59                 extern static IntPtr mono_btls_key_new ();
  60
  61                 [DllImport (BTLS_DYLIB)]
  62                 extern static void mono_btls_key_free (IntPtr handle);
  63
  64                 [DllImport (BTLS_DYLIB)]
  65                 extern static IntPtr mono_btls_key_up_ref (IntPtr handle);
  66
  67                 [DllImport (BTLS_DYLIB)]
  68                 extern static int mono_btls_key_get_bytes (IntPtr handle, out IntPtr data, out int size, int include_private_bits);
  69
  70                 [DllImport (BTLS_DYLIB)]
  71                 extern static int mono_btls_key_get_bits (IntPtr handle);
  72
  73                 [DllImport (BTLS_DYLIB)]
  74                 extern static int mono_btls_key_is_rsa (IntPtr handle);
  75
  76                 [DllImport (BTLS_DYLIB)]
  77                 extern static int mono_btls_key_assign_rsa_private_key (IntPtr handle, byte[] der, int der_length);
  78
  79                 new internal BoringKeyHandle Handle {
  80                         get { return (BoringKeyHandle)base.Handle; }
  81                 }
  82
  83                 internal MonoBtlsKey (BoringKeyHandle handle)
  84                         : base (handle)
  85                 {
  86                 }
  87
  88                 public byte[] GetBytes (bool include_private_bits)
  89                 {
  90                         int size;
  91                         IntPtr data;
  92
  93                         var ret = mono_btls_key_get_bytes (Handle.DangerousGetHandle (), out data, out size, include_private_bits ? 1 : 0);
  94                         CheckError (ret);
  95
  96                         var buffer = new byte [size];
  97                         Marshal.Copy (data, buffer, 0, size);
  98                         FreeDataPtr (data);
  99                         return buffer;
 100                 }
 101
 102                 public bool IsRsa {
 103                         get {
 104                                 return mono_btls_key_is_rsa (Handle.DangerousGetHandle ()) != 0;
 105                         }
 106                 }
 107
 108                 public MonoBtlsKey Copy ()
 109                 {
 110                         CheckThrow ();
 111                         var copy = mono_btls_key_up_ref (Handle.DangerousGetHandle ());
 112                         CheckError (copy != IntPtr.Zero);
 113                         return new MonoBtlsKey (new BoringKeyHandle (copy));
 114                 }
 115
 116                 public static MonoBtlsKey CreateFromRSAPrivateKey (System.Security.Cryptography.RSA privateKey)
 117                 {
 118                         var keyData = MX.PKCS8.PrivateKeyInfo.Encode (privateKey);
 119                         var key = new MonoBtlsKey (new BoringKeyHandle (mono_btls_key_new ()));
 120
 121                         var ret = mono_btls_key_assign_rsa_private_key (key.Handle.DangerousGetHandle (), keyData, keyData.Length);
 122                         if (ret == 0)
 123                                 throw new MonoBtlsException ("Assigning private key failed.");
 124
 125                         return key;
 126                 }
 127         }
 128 }
 129 #endif