diff --git a/tests/keyring/deletePublic.cs b/tests/keyring/deletePublic.cs
new file mode 100644
index 0000000..1ebb8ce
--- /dev/null
+++ b/tests/keyring/deletePublic.cs
@@ -0,0 +1,45 @@
+using NUnit.Framework;
+using System;
+using System.IO;
+using Sodium;
+using System.Collections.Generic;
+using keyring;
+using chestcrypto;
+using chestcrypto.exceptions;
+
+namespace KeyRingTests
+{
+    public class Tests
+    {
+        [SetUp]
+        public void Setup()
+        {
+        }
+
+        [Test]
+        public void TestDeleteIdentityByPublicKey(){
+            string tempFile = Path.GetTempFileName();
+
+            DoublePublicKey getKey(){
+                KeyRing keyRing = new KeyRing();
+                byte[] signingKey = PublicKeyAuth.GenerateKeyPair().PublicKey;
+                byte[] encryptionKey = PublicKeyBox.GenerateKeyPair().PublicKey;
+
+                byte[] combinedKey = new byte[signingKey.Length + encryptionKey.Length];
+                Buffer.BlockCopy(signingKey, 0, combinedKey, 0, signingKey.Length);
+                Buffer.BlockCopy(encryptionKey, 0, combinedKey, signingKey.Length, encryptionKey.Length);
+                DoublePublicKey combo = new DoublePublicKey(signingKey, encryptionKey);
+                return combo;
+            }
+            DoublePublicKey combo = getKey();
+            KeyRing keyRing = new KeyRing();
+            keyRing.addPublicKey(combo);
+            Assert.IsTrue(keyRing.getIdentityCount() == 1);
+            keyRing.removeIdentityByPubkey(combo);
+            Assert.IsTrue(keyRing.getIdentityCount() == 0);
+
+
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/treasurechest/chestcrypto/identity/exceptions.cs b/treasurechest/chestcrypto/identity/exceptions.cs
new file mode 100644
index 0000000..c8ee2ea
--- /dev/null
+++ b/treasurechest/chestcrypto/identity/exceptions.cs
@@ -0,0 +1,23 @@
+using System;
+namespace chestcrypto{
+
+    namespace exceptions{
+        public class NoIdentityException : Exception
+        {
+            public NoIdentityException()
+            {
+            }
+
+            public NoIdentityException(string message)
+                : base(message)
+            {
+            }
+
+            public NoIdentityException(string message, Exception inner)
+                : base(message, inner)
+            {
+            }
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/treasurechest/keyring/keyring.cs b/treasurechest/keyring/keyring.cs
index 019e273..704326b 100644
--- a/treasurechest/keyring/keyring.cs
+++ b/treasurechest/keyring/keyring.cs
@@ -22,11 +22,34 @@ namespace keyring{
             return success;
         }
 
+        private int getIdentityListPosition(Identity iden){
+            int counter = 0;
+            bool success = false;
+            identities.ForEach(delegate(Identity ident)
+            {
+                if (ident.getDoublePublicKey().Equals(iden.getDoublePublicKey())){
+                    success = true;
+                    return;
+                }
+                counter += 1;
+            });
+            if (success){
+                return counter;
+            }
+            throw new NoIdentityException();
+        }
+
         public KeyRing(string storageFile){
 
         }
         public KeyRing(){}
 
+        public int getIdentityCount(){return identities.Count;}
+
+        public int getIdentityInstance(DoublePublicKey){
+
+        }
+
         public List<byte[]> getIdentityPublicKeys(){
             List<byte[]> pubKeys = new List<byte[]>();
             identities.ForEach(delegate(Identity identity){
@@ -48,7 +71,7 @@ namespace keyring{
 
         }
 
-        public void deletePublicKey(DoublePublicKey key){
+        public void removeIdentityByPubkey(DoublePublicKey key){
 
         }
     }