Renamed the new Directories. (removed the "-Source" from the end of them)

1 files changed, 0 insertions, 109 deletions

diff --git a/Common-Source/OpenSim.Framework/Remoting.cs b/Common-Source/OpenSim.Framework/Remoting.cs
deleted file mode 100644
index 1212ee5..0000000
--- a/Common-Source/OpenSim.Framework/Remoting.cs
+++ /dev/null
@@ -1,109 +0,0 @@
-using System;

-using System.Collections.Generic;

-using System.Text;

-using System.Security.Cryptography;

-

-namespace OpenSim.Framework

-{

-    /// <summary>

-    /// NEEDS AUDIT.

-    /// </summary>

-    /// <remarks>

-    /// Suggested implementation

-    /// <para>Store two digests for each foreign host. A local copy of the local hash using the local challenge (when issued), and a local copy of the remote hash using the remote challenge.</para>

-    /// <para>When sending data to the foreign host - run 'Sign' on the data and affix the returned byte[] to the message.</para>

-    /// <para>When recieving data from the foreign host - run 'Authenticate' against the data and the attached byte[].</para>

-    /// <para>Both hosts should be performing these operations for this to be effective.</para>

-    /// </remarks>

-    class RemoteDigest

-    {

-        private byte[] currentHash;

-        private byte[] secret;

-

-        private SHA512Managed SHA512;

-

-        /// <summary>

-        /// Initialises a new RemoteDigest authentication mechanism

-        /// </summary>

-        /// <remarks>Needs an audit by a cryptographic professional - was not "roll your own"'d by choice but rather a serious lack of decent authentication mechanisms in .NET remoting</remarks>

-        /// <param name="sharedSecret">The shared secret between systems (for inter-sim, this is provided in encrypted form during connection, for grid this is input manually in setup)</param>

-        /// <param name="salt">Binary salt - some common value - to be decided what</param>

-        /// <param name="challenge">The challenge key provided by the third party</param>

-        public RemoteDigest(string sharedSecret, byte[] salt, string challenge)

-        {

-            SHA512 = new SHA512Managed();

-            Rfc2898DeriveBytes RFC2898 = new Rfc2898DeriveBytes(sharedSecret,salt);

-            secret = RFC2898.GetBytes(512);

-            ASCIIEncoding ASCII = new ASCIIEncoding();

-

-            currentHash = SHA512.ComputeHash(AppendArrays(secret, ASCII.GetBytes(challenge)));

-        }

-

-        /// <summary>

-        /// Authenticates a piece of incoming data against the local digest. Upon successful authentication, digest string is incremented.

-        /// </summary>

-        /// <param name="data">The incoming data</param>

-        /// <param name="digest">The remote digest</param>

-        /// <returns></returns>

-        public bool Authenticate(byte[] data, byte[] digest)

-        {

-            byte[] newHash = SHA512.ComputeHash(AppendArrays(AppendArrays(currentHash, secret), data));

-            if (digest == newHash)

-            {

-                currentHash = newHash;

-                return true;

-            }

-            else

-            {

-                throw new Exception("Hash comparison failed. Key resync required.");

-            }

-        }

-

-        /// <summary>

-        /// Signs a new bit of data with the current hash. Returns a byte array which should be affixed to the message.

-        /// Signing a piece of data will automatically increment the hash - if you sign data and do not send it, the 

-        /// hashes will get out of sync and throw an exception when validation is attempted.

-        /// </summary>

-        /// <param name="data">The outgoing data</param>

-        /// <returns>The local digest</returns>

-        public byte[] Sign(byte[] data)

-        {

-            currentHash = SHA512.ComputeHash(AppendArrays(AppendArrays(currentHash, secret), data));

-            return currentHash;

-        }

-

-        /// <summary>

-        /// Generates a new challenge string to be issued to a foreign host. Challenges are 1024-bit (effective strength of less than 512-bits) messages generated using the Crytographic Random Number Generator.

-        /// </summary>

-        /// <returns>A 128-character hexadecimal string containing the challenge.</returns>

-        public static string GenerateChallenge()

-        {

-            RNGCryptoServiceProvider RNG = new RNGCryptoServiceProvider();

-            byte[] bytes = new byte[64];

-            RNG.GetBytes(bytes);

-

-            StringBuilder sb = new StringBuilder(bytes.Length * 2);

-            foreach (byte b in bytes)

-            {

-                sb.AppendFormat("{0:x2}", b);

-            }

-            return sb.ToString();

-        }

-

-        /// <summary>

-        /// Helper function, merges two byte arrays

-        /// </summary>

-        /// <remarks>Sourced from MSDN Forum</remarks>

-        /// <param name="a">A</param>

-        /// <param name="b">B</param>

-        /// <returns>C</returns>

-        private byte[] AppendArrays(byte[] a, byte[] b)

-        {

-            byte[] c = new byte[a.Length + b.Length];

-            Buffer.BlockCopy(a, 0, c, 0, a.Length);

-            Buffer.BlockCopy(b, 0, c, a.Length, b.Length);

-            return c;

-        }

-

-    }

-}