1 /*

     2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:    Class is used for configuring MCC SRTP master key

    15 *

    16 */

    17 

    18 

    19 

    20 

    21 #ifndef MCCSRTPMASTERKEY_H

    22 #define MCCSRTPMASTERKEY_H

    23 

    24 // INCLUDES

    25 #include <e32base.h>

    26 

    27 // SRTP Master key length

    28 // 16 octets (128 bits) 

    29 const TUint KMasterKeyMaxLength = 16;

    30 

    31 // default SRTP SESSION key lengths:

    32 // default bit length (n_e) for session encryption key (k_e):

    33 // 128 bits (16 octets)

    34 const TUint KMccSRTPDefSessionEncryptionKeyLength = 0x80;

    35 

    36 // default bit length (n_a) for session authentication key (k_a):

    37 // 160 bits (20 octets)

    38 const TUint KMccSRTPDefSessionAuthenticationKeyLength = 0xa0;

    39 

    40 // default SRTP MASTER key lengths:

    41 // default bit length for SRTP master key (128-bit AES):

    42 // 128 bits (16 octets)

    43 const TUint16 KMccSRTPDefaultMasterKeyLength = 0x80;

    44 

    45 // Master key identifier length

    46 // 128 octets 

    47 const TUint KMKIMaxLength = 128;

    48 

    49 /**

    50  * The TMccSrtpMasterKey captures the MCC SRTP master key params

    51  * into one class

    52  *

    53  * @lib N/A

    54  * @since Series 60 3.2

    55  */    

    56 class TMccSrtpMasterKey

    57 	{

    58 public: 

    59 	

    60     inline TMccSrtpMasterKey( const TDesC8& aMasterKey,

    61                               const TDesC8& aMKI,

    62                               TUint aEncKeyBitLength =

    63                                   KMccSRTPDefSessionEncryptionKeyLength,

    64                               TUint aAuthKeyBitLength =

    65                                   KMccSRTPDefSessionAuthenticationKeyLength ) :

    66         iMasterKey( aMasterKey ),

    67         iMKI( aMKI ),

    68         iEncKeyBitLength( aEncKeyBitLength ),

    69         iAuthKeyBitLength( aAuthKeyBitLength )                    

    70     	{

    71     	};

    72     	

    73 private:

    74 

    75     TMccSrtpMasterKey() :

    76         iMasterKey( KNullDesC8 ),

    77         iMKI( KNullDesC8 ), 

    78         iEncKeyBitLength( KMccSRTPDefSessionEncryptionKeyLength ),

    79         iAuthKeyBitLength( KMccSRTPDefSessionAuthenticationKeyLength )                 

    80     	{

    81     	};

    82 

    83 public:

    84     

    85     /**

    86      * The master key value.

    87      */

    88     TBuf8< KMasterKeyMaxLength > iMasterKey; 

    89     

    90     /**

    91      * The master key identifier value

    92      */

    93     TBuf8< KMKIMaxLength > iMKI;

    94     

    95     /**

    96      * The bit length of the encryption key

    97      */

    98     TUint iEncKeyBitLength;

    99 

   100     /**

   101      * The bit length of the authentication key

   102      */

   103     TUint iAuthKeyBitLength;

   104     	

   105 	};

   106 		

   107 typedef TPckgBuf<TMccSrtpMasterKey> TMccSrtpMasterKeyPckg;

   108 

   109 

   110 #endif /* MCCSRTPMASTERKEY_H */

   111             

   112 // End of File