1 /*

     2 * Copyright (c) 2003-2009 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: 

    15 * Cryptographic Intermediate Layer to use and change any crypto library easily.

    16 *

    17 */

    18 

    19 #ifndef IKEV1CRYPTO_H

    20 #define IKEV1CRYPTO_H

    21 

    22 #include <e32base.h>

    23 #include "ikev1isakmpct.h"

    24 

    25 

    26 class CUtlDiffieHellman;

    27 

    28 NONSHARABLE_CLASS(CIkeKeys) : public CBase

    29 {

    30 public:

    31     static CIkeKeys* NewL(const TDesC8& aN,const TDesC8& aG);   

    32     HBufC8 *GetPubKey();

    33     void XValueL(); 

    34     const HBufC8* KValueL(const TDesC8& aY) const;

    35 	inline TInt ModulusLength() {return iModuluslength;}

    36 

    37     ~CIkeKeys();

    38 private:

    39     CUtlDiffieHellman* iDHKey;

    40     const HBufC8*      iPubKey;

    41 	TInt               iModuluslength;

    42 };

    43 

    44 

    45 // SSL function implementation using Symbian apis

    46 //  - des_ede3_cbc_encrypt

    47 #define DES_ENCRYPT 1

    48 #define DES_DECRYPT 0

    49 

    50 #define HMAC_MD5_SIZE   128

    51 #define HMAC_SHA1_SIZE  160

    52 

    53 #define DESCBC_KEY_LEN  8

    54 #define DESCBC_IV_LEN   8

    55 

    56 #define AESCBC_DEF_KEY_LEN 16

    57 #define AESCBC_IV_LEN   16

    58 

    59 #define DEFAULT_NONCE_SIZE   128/8   //128 bits = 16 bytes

    60 

    61 #define PAD_SIZE	64 + 2 * DEFAULT_NONCE_SIZE + 1000

    62 

    63 //DH functions

    64 CIkeKeys* GeneratePubPrivKeysL(TUint aGroupDesc);

    65 HBufC8* ComputeAgreedKeyL(TUint aGroupDesc, const TDesC8 &aPeerPublicKey, CIkeKeys *aOwnKeys);

    66 

    67 //

    68 //Symmetric encryption/decryption functions

    69 //

    70 void DecryptL(const TUint8* aInputPayload, TUint8* aOutputPayload, TUint32 aLength, TDes8 &aIV, TDesC8& aKey, TUint16 aEncrAlg);

    71 TBool EncryptL(TDes8& aInputPayload, TDes8& aOutputPayload,TDes8 &aIV, TDesC8& aKey , TUint16 aEncrAlg);

    72 void Cipher3DesL(TUint8 *aInData, TInt aInDataLen, const TDesC8 &aPrfKey, TDes8 &aIV, TDes8 &aPrfOutput);

    73 

    74 //

    75 //Message Digest Algorithms

    76 //

    77 void MD5HashL(const TDesC8 &aInData, TDes8& aOutData);

    78 void SHA1HashL(const TDesC8 &aInData, TDes8& aOutData);

    79 

    80 void MD5HmacL(const TDesC8 &aInData, TDes8& aOutData, const TDesC8& aKeyData);

    81 void SHA1HmacL(const TDesC8 &aInData, TDes8& aOutData, const TDesC8& aKeyData);

    82 

    83 //The length of aInData must be less than PAD_SIZE. The caller of this function

    84 //has to take care of handling the size of this parameter.

    85 void Hmac3DesCbcL(const TDesC8 &aInData, TDes8& aOutData, const TDesC8& aKeyData);

    86 

    87 TInt SymmetricCipherL(TUint8 *aInput,  TUint8 *aOutput, TInt aLength,

    88 					  TUint8 *aKey,    TUint8 *aIV, TBool aEncr, TInt aEncAlg = DES_CBC);

    89 

    90 #endif