3 files changed, 44 insertions, 4 deletions
diff --git a/MediaBrowser.Common/Extensions/BaseExtensions.cs b/MediaBrowser.Common/Extensions/BaseExtensions.cs
index db0514bb18..40c16b9573 100644
--- a/MediaBrowser.Common/Extensions/BaseExtensions.cs
+++ b/MediaBrowser.Common/Extensions/BaseExtensions.cs
@@ -1,6 +1,7 @@
 using System;
+using System.Text;
 using System.Text.RegularExpressions;
-using MediaBrowser.Model.Cryptography;
+using System.Security.Cryptography;
 
 namespace MediaBrowser.Common.Extensions
 {
@@ -9,8 +10,6 @@ namespace MediaBrowser.Common.Extensions
     /// </summary>
     public static class BaseExtensions
     {
-        public static ICryptoProvider CryptographyProvider { get; set; }
-
         /// <summary>
         /// Strips the HTML.
         /// </summary>
@@ -31,7 +30,10 @@ namespace MediaBrowser.Common.Extensions
         /// <returns>Guid.</returns>
         public static Guid GetMD5(this string str)
         {
-            return CryptographyProvider.GetMD5(str);
+            using (var provider = MD5.Create())
+            {
+                return new Guid(provider.ComputeHash(Encoding.Unicode.GetBytes(str)));
+            }
         }
     }
 }
diff --git a/MediaBrowser.Common/Extensions/CollectionExtensions.cs b/MediaBrowser.Common/Extensions/CollectionExtensions.cs
new file mode 100644
index 0000000000..f7c0e3cf04
--- /dev/null
+++ b/MediaBrowser.Common/Extensions/CollectionExtensions.cs
@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace MediaBrowser.Common.Extensions
+{
+    // The MS CollectionExtensions are only available in netcoreapp
+    public static class CollectionExtensions
+    {
+        public static TValue GetValueOrDefault<TKey, TValue> (this IReadOnlyDictionary<TKey, TValue> dictionary, TKey key)
+        {
+            dictionary.TryGetValue(key, out var ret);
+            return ret;
+        }
+    }
+}
diff --git a/MediaBrowser.Common/Extensions/ResourceNotFoundException.cs b/MediaBrowser.Common/Extensions/ResourceNotFoundException.cs
index f62c65fd7f..9f70ae7d89 100644
--- a/MediaBrowser.Common/Extensions/ResourceNotFoundException.cs
+++ b/MediaBrowser.Common/Extensions/ResourceNotFoundException.cs
@@ -26,6 +26,30 @@ namespace MediaBrowser.Common.Extensions
         }
     }
 
+    /// <summary>
+    /// Class MethodNotAllowedException
+    /// </summary>
+    public class MethodNotAllowedException : Exception
+    {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MethodNotAllowedException" /> class.
+        /// </summary>
+        public MethodNotAllowedException()
+        {
+
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="MethodNotAllowedException" /> class.
+        /// </summary>
+        /// <param name="message">The message.</param>
+        public MethodNotAllowedException(string message)
+            : base(message)
+        {
+
+        }
+    }
+
     public class RemoteServiceUnavailableException : Exception
     {
         public RemoteServiceUnavailableException()