--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/rtp/srtpstack/inc/srtpauthentication_hmac_sha1.h Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,71 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: Provides class for authentication with HMAC-SHA1 algorithm.
+*
+*/
+
+
+
+
+#ifndef __SRTP_AUTHENTICATION_HMAC_SHA1_H__
+#define __SRTP_AUTHENTICATION_HMAC_SHA1_H__
+
+#include "msrtpauthentication.h"
+
+class CSRTPAuthentication_HMAC_SHA1 : public CBase, public MSRTPAuthentication
+ {
+ public:
+ /**
+ * Constructor.
+ * @leave KErrNone if success, system-wide error code otherwise
+ */
+ static CSRTPAuthentication_HMAC_SHA1* NewL();
+
+ /**
+ * Constructor.
+ * @leave KErrNone if success, system-wide error code otherwise
+ */
+ static CSRTPAuthentication_HMAC_SHA1* NewLC();
+
+ /**
+ * Destructor.
+ */
+ ~CSRTPAuthentication_HMAC_SHA1();
+
+ /**
+ * This function is called by SRTP for authentication/integrity protection
+ * with the default algorith, HMAC-SHA1.
+ * Produces authentication tag based on input key and data M.
+ * result IS truncated to n_tag leftmost bits
+ * @param aBitLength authentication tag length
+ * @param aKey authentication key (n_a)
+ * @param aAuthPortion data to be integrity protected
+ * Returns HBufC8* authentication tag (n_tag truncated)
+ */
+ HBufC8* AuthenticateL(TUint aBitLength,
+ const TDesC8& aKey,
+ const TDesC8& aAuthPortion,
+ const TDesC8& aRoc);
+
+ private: // methods
+ /**
+ * Default constructor.
+ */
+ CSRTPAuthentication_HMAC_SHA1();
+
+ void ConstructL();
+ };
+
+#endif // __SRTP_AUTHENTICATION_HMAC_SHA1_H__
+