From 72bc65bf9af227d835cfc04e43b4a51b5ac343d6 Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@bouncycastle.org>
Date: Sun, 18 Oct 2015 12:22:25 +0700
Subject: Add CalculateMac utility method

---
 crypto/src/security/MacUtilities.cs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/crypto/src/security/MacUtilities.cs b/crypto/src/security/MacUtilities.cs
index d1f8c89b4..d7fe91142 100644
--- a/crypto/src/security/MacUtilities.cs
+++ b/crypto/src/security/MacUtilities.cs
@@ -230,6 +230,14 @@ namespace Org.BouncyCastle.Security
             return (string) algorithms[oid.Id];
         }
 
+        public static byte[] CalculateMac(string algorithm, ICipherParameters cp, byte[] input)
+        {
+            IMac mac = GetMac(algorithm);
+            mac.Init(cp);
+            mac.BlockUpdate(input, 0, input.Length);
+            return DoFinal(mac);
+        }
+
         public static byte[] DoFinal(IMac mac)
         {
             byte[] b = new byte[mac.GetMacSize()];
-- 
cgit 1.4.1