diff --git a/src/Microsoft.AspNet.Security.DataProtection/PBKDF2.cs b/src/Microsoft.AspNet.Security.DataProtection/PBKDF2.cs
deleted file mode 100644
index c2f7c22b86..0000000000
--- a/src/Microsoft.AspNet.Security.DataProtection/PBKDF2.cs
+++ /dev/null
@@ -1,68 +0,0 @@
-// Copyright (c) Microsoft Open Technologies, Inc. All rights reserved.
-// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
-
-using System;
-using System.Security.Cryptography;
-
-namespace Microsoft.AspNet.Security.DataProtection
-{
-    /// <summary>
-    /// Helper class to derive keys from low-entropy passwords using the PBKDF2 algorithm.
-    /// </summary>
-    public static class PBKDF2
-    {
-        /// <summary>
-        /// Derives a key from a low-entropy password.
-        /// </summary>
-        /// <param name="algorithmName">The name of the PRF to use for key derivation.</param>
-        /// <param name="password">The low-entropy password from which to generate a key.</param>
-        /// <param name="salt">The salt used to randomize the key derivation.</param>
-        /// <param name="iterationCount">The number of iterations to perform.</param>
-        /// <param name="numBytesToDerive">The desired byte length of the derived key.</param>
-        /// <returns>A key derived from the provided password.</returns>
-        /// <remarks>For compatibility with the Rfc2898DeriveBytes class, specify "SHA1" for the <em>algorithmName</em> parameter.</remarks>
-        public unsafe static byte[] DeriveKey(string algorithmName, byte[] password, byte[] salt, ulong iterationCount, uint numBytesToDerive)
-        {
-            if (String.IsNullOrEmpty(algorithmName))
-            {
-                throw new ArgumentException(Res.Common_NullOrEmpty, "algorithmName");
-            }
-            if (password == null || password.Length == 0)
-            {
-                throw new ArgumentException(Res.Common_NullOrEmpty, "password");
-            }
-            if (salt == null || salt.Length == 0)
-            {
-                throw new ArgumentException(Res.Common_NullOrEmpty, "salt");
-            }
-            if (iterationCount <= 0)
-            {
-                throw new ArgumentOutOfRangeException("iterationCount");
-            }
-
-            byte[] derivedKey = new byte[numBytesToDerive];
-            int status;
-
-            using (BCryptAlgorithmHandle algHandle = Algorithms.CreateGenericHMACHandleFromPrimitiveProvider(algorithmName))
-            {
-                fixed (byte* pPassword = password)
-                fixed (byte* pSalt = salt)
-                fixed (byte* pDerivedKey = derivedKey)
-                {
-                    status = UnsafeNativeMethods.BCryptDeriveKeyPBKDF2(
-                        algHandle, pPassword, (uint)password.Length, pSalt, (uint)salt.Length, iterationCount,
-                        pDerivedKey, numBytesToDerive, dwFlags: 0);
-                }
-            }
-
-            if (status == 0 /* STATUS_SUCCESS */)
-            {
-                return derivedKey;
-            }
-            else
-            {
-                throw new CryptographicException(status);
-            }
-        }
-    }
-}