-/* Transport Security Layer (TLS)
- * Copyright (c) 2003 Carlos Guzmán Álvarez
- *
- * 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.
- */
+// Transport Security Layer (TLS)
+// Copyright (c) 2003-2004 Carlos Guzman Alvarez
+
+//
+// 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.Security.Cryptography;
namespace Mono.Security.Protocol.Tls.Handshake.Client
{
- internal class TlsServerKeyExchange : TlsHandshakeMessage
+ internal class TlsServerKeyExchange : HandshakeMessage
{
- #region FIELDS
+ #region Fields
private RSAParameters rsaParams;
private byte[] signedParams;
#endregion
- #region CONSTRUCTORS
+ #region Constructors
- public TlsServerKeyExchange(TlsSession session, byte[] buffer)
- : base(session, TlsHandshakeType.ServerKeyExchange, buffer)
+ public TlsServerKeyExchange(Context context, byte[] buffer)
+ : base(context, HandshakeType.ServerKeyExchange, buffer)
{
this.verifySignature();
}
#endregion
- #region METHODS
+ #region Methods
- public override void UpdateSession()
+ public override void Update()
{
- base.UpdateSession();
+ base.Update();
- this.Session.Context.ServerSettings.ServerKeyExchange = true;
- this.Session.Context.ServerSettings.RsaParameters = this.rsaParams;
- this.Session.Context.ServerSettings.SignedParams = this.signedParams;
+ this.Context.ServerSettings.ServerKeyExchange = true;
+ this.Context.ServerSettings.RsaParameters = this.rsaParams;
+ this.Context.ServerSettings.SignedParams = this.signedParams;
}
#endregion
- #region PROTECTED_METHODS
+ #region Protected Methods
protected override void ProcessAsSsl3()
{
this.rsaParams = new RSAParameters();
// Read modulus
- rsaParams.Modulus = this.ReadBytes(this.ReadInt16());
+ this.rsaParams.Modulus = this.ReadBytes(this.ReadInt16());
// Read exponent
- rsaParams.Exponent = this.ReadBytes(this.ReadInt16());
+ this.rsaParams.Exponent = this.ReadBytes(this.ReadInt16());
// Read signed params
- signedParams = this.ReadBytes(this.ReadInt16());
+ this.signedParams = this.ReadBytes(this.ReadInt16());
}
#endregion
- #region PRIVATE_METHODS
+ #region Private Methods
private void verifySignature()
{
- MD5SHA1CryptoServiceProvider hash = new MD5SHA1CryptoServiceProvider();
+ MD5SHA1 hash = new MD5SHA1();
+
+ // Calculate size of server params
+ int size = rsaParams.Modulus.Length + rsaParams.Exponent.Length + 4;
// Create server params array
TlsStream stream = new TlsStream();
- stream.Write(this.Session.Context.RandomCS);
- stream.Write(rsaParams.Modulus.Length);
- stream.Write(rsaParams.Modulus);
- stream.Write(rsaParams.Exponent.Length);
- stream.Write(rsaParams.Exponent);
+ stream.Write(this.Context.RandomCS);
+ stream.Write(this.ToArray(), 0, size);
hash.ComputeHash(stream.ToArray());
stream.Reset();
-
- // Verify Signature
- X509Certificate certificate = this.Session.Context.ServerSettings.ServerCertificates[0];
-
- RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(rsaParams.Modulus.Length << 3);
- rsa.ImportParameters(rsaParams);
-
- byte[] sign = hash.CreateSignature(rsa);
- hash.VerifySignature(rsa, this.signedParams);
+
+ bool isValidSignature = hash.VerifySignature(
+ this.Context.ServerSettings.CertificateRSA,
+ this.signedParams);
+
+ if (!isValidSignature)
+ {
+ throw new TlsException(
+ AlertDescription.DecodeError,
+ "Data was not signed with the server certificate.");
+ }
}
#endregion
projects / mono.git / blobdiff