From f47b458f2a8e154624d73d58cd9fbfca72e0a89d Mon Sep 17 00:00:00 2001
From: Alistair Evans <alistair.evans@enclave.io>
Date: Fri, 4 Feb 2022 15:41:43 +0000
Subject: [PATCH] Don't depend on enclave for RNG, just use the built-in .NET
 one

---
 src/Enclave.ARSoft.Tools.Net/Dns/DnsClientBase.cs           | 6 ++----
 .../Enclave.ARSoft.Tools.Net.csproj                         | 3 ---
 2 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/src/Enclave.ARSoft.Tools.Net/Dns/DnsClientBase.cs b/src/Enclave.ARSoft.Tools.Net/Dns/DnsClientBase.cs
index fb48ea3..7498bd8 100644
--- a/src/Enclave.ARSoft.Tools.Net/Dns/DnsClientBase.cs
+++ b/src/Enclave.ARSoft.Tools.Net/Dns/DnsClientBase.cs
@@ -25,16 +25,14 @@
 using System.Net;
 using System.Net.NetworkInformation;
 using System.Net.Sockets;
+using System.Security.Cryptography;
 using System.Threading;
 using System.Threading.Tasks;
-using Enclave.Sdk.Security;
 
 namespace ARSoft.Tools.Net.Dns
 {
 	public abstract class DnsClientBase
 	{
-		private static readonly IRngSecure _secureRandom = RngSecure.Shared;
-
 		private readonly List<IPAddress> _servers;
 		private readonly bool _isAnyServerMulticast;
 		private readonly int _port;
@@ -263,7 +261,7 @@ private void PrepareMessage<TMessage>(TMessage message, out int messageLength, o
 		{
 			if (message.TransactionID == 0)
 			{
-				message.TransactionID = (ushort) BinaryPrimitives.ReadUInt16LittleEndian(_secureRandom.GetRandomBits(sizeof(ushort) * 8));
+				message.TransactionID = (ushort) RandomNumberGenerator.GetInt32(0, 0xffff);
 			}
 
 			if (Is0x20ValidationEnabled)
diff --git a/src/Enclave.ARSoft.Tools.Net/Enclave.ARSoft.Tools.Net.csproj b/src/Enclave.ARSoft.Tools.Net/Enclave.ARSoft.Tools.Net.csproj
index e472907..64f42ab 100644
--- a/src/Enclave.ARSoft.Tools.Net/Enclave.ARSoft.Tools.Net.csproj
+++ b/src/Enclave.ARSoft.Tools.Net/Enclave.ARSoft.Tools.Net.csproj
@@ -15,7 +15,4 @@
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>
   </ItemGroup>
-  <ItemGroup>
-    <PackageReference Include="Enclave.Sdk.Security" Version="3.0.0" />
-  </ItemGroup>
 </Project>
\ No newline at end of file