Added challenge generation function to generate cryptographic strength challenges.

1 files changed, 19 insertions, 0 deletions

diff --git a/OpenSim.Framework/Remoting.cs b/OpenSim.Framework/Remoting.cs
index 88f5598..12208fa 100644
--- a/OpenSim.Framework/Remoting.cs
+++ b/OpenSim.Framework/Remoting.cs
@@ -73,8 +73,27 @@ namespace OpenSim.Framework
         }

 

         /// <summary>

+        /// Generates a new challenge string to be issued to a foreign host. Challenges are 1024-bit 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>