--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ipappprotocols_plat/srtp_api/inc/srtpdef.h	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,102 @@
+/*
+* 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:    Contains SRTP definitions and constants.
+*
+*/
+
+
+
+
+#ifndef __SRTP_DEF_H__
+#define __SRTP_DEF_H__
+
+// INCLUDES
+#include <e32def.h>
+#include <e32des8.h>
+
+// CONSTANTS
+//Block size of the 128 bit AES-CM in bytes
+const TInt KAESCM128BlockSizeInBytes = 0x10;
+
+const TInt KMinSizeRtpHeader = 12; // 96 bits in header, 96/8 = 12
+const TInt KMinSizeRtcpHeader = 8; // 96 bits in header, 96/8 = 12
+
+// The 80 bit length of the HMAC-SHA1 authentication tag (n_tag)
+const TUint KSRTPAuthTagLength80 = 80;
+
+//recommending to use in RCCm1 or RCCm2 as 14 octets
+const TUint KSRTPAuthTagLength112 = 112;
+// 4 octets32 bits
+const TUint KSRTPROCLength4 = 4; 
+
+// The 32 bit length of the HMAC-SHA1 authentication tag (n_tag)
+// Also recommending in RCCm3 as 4 octects
+const TUint KSRTPAuthTagLength32 = 32;
+
+// The default bit length of the HMAC-SHA1 authentication tag (n_tag)
+const TUint KSRTPAuthTagDefaultLength = KSRTPAuthTagLength80;
+
+// The default length of the SRTP prefix
+const TUint KSRTPPrefixLength = 0;
+
+// default SRTP key derivation rate: 0
+const TUint16 KSRTPDefaultKeyDerivationRate = 0x00;
+
+// default SRTP ROC Transmission rate: 1
+const TUint16 KSRTPDefaultROCTransRate = 0x01;
+
+const TUint KSRTCPPacketIndexLength4 = 4; 
+// default label values
+const TUint KSRTPEncryptionLabel = 0x00;
+const TUint KSRTPAuthenticationLabel = 0x01;
+const TUint KSRTPSaltingLabel = 0x02;
+const TUint KSRTCPEncryptionLabel = 0x03;
+const TUint KSRTCPAuthenticationLabel = 0x04;
+const TUint KSRTCPSaltingLabel = 0x05;
+
+// default SRTP SESSION key lengths:
+// default bit length (n_e) for session encryption key (k_e):
+// 128 bits (16 octets)
+const TUint KSRTPDefSessionEncryptionKeyLength = 0x80;
+// default bit length (n_s) for session salt key (k_s):
+// 112 bits (14 octets)
+const TUint KSRTPDefSessionSaltingKeyLength = 0x70;
+// default bit length (n_a) for session authentication key (k_a):
+// 160 bits (20 octets)
+const TUint KSRTPDefSessionAuthenticationKeyLength = 0xa0;
+
+// default SRTP MASTER key lengths:
+// default bit length for SRTP master key (128-bit AES):
+// 128 bits (16 octets)
+const TUint16 KSRTPDefaultMasterKeyLength = 0x80;
+// default bit length for SRTP master salt 
+// 112 bits (14 octets)
+const TUint16 KSRTPDefaultMasterSaltLength = 0x70;
+
+// SRTP limit values
+// max SRTP plain/cipher text length is 2^23 == 0x80000
+// since we use 8 bit descriptors, divide this with 2
+const TUint KSRTPMaxTextLength = 0x40000;
+// max SRTP keystream 128 bit blocks is 2^16 == 0x10000
+// for an IV value we can not create more keystream blocks
+// KSRTPMaxKeyStreamBlocks * 128 equals KSRTPMaxTextLength * 2 
+const TUint KSRTPMaxKeyStreamBlocks = 0x10000;
+
+const TInt KReplayWindowSize = 64;
+//2^48 -1 for SRTP
+const TUint64 KSRTPMasterKeysLifeTime = 0xFFFFFFFFFFFF;
+const TUint32 KLeftNumOfPacketBeforeReKey = 0x64;
+//2^31 -1 for SRTCP
+const TUint64 KSRTCPMaterKeysLifeTime = 0x7FFFFFFF;
+#endif // __SRTP_DEF_H__