/*

* Copyright (c) 2002-2004 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:  ?Description

*

*/

#ifndef OMACRYPTO_H

#define OMACRYPTO_H

#include <bigint.h>

// FORWARD DECLARATIONS

class CRSAPrivateKey;

class CRSAPublicKey;

class MDrmKeyStorage;

// CLASS DECLARATION

/**

*  OmaCrypto: Contains crypto operations for OMA DRM 2.0

*

*  @lib    -

*  @since  3.0

*/

class OmaCrypto

    {

public: // Constants    

    static const TInt KKeySize = 16;

    static const TInt KMacSize = 16;

    static const TInt KWrapBlockSize = 8;

    static const TInt KWrappedKeySize = KKeySize + KMacSize + KWrapBlockSize;

    static const TInt KPssSaltLength = 20;

public: // New functions

    IMPORT_C static HBufC8* RsaDecryptL(

        MDrmKeyStorage* aKeyStorage,

        const TDesC8& aInput);

    IMPORT_C static HBufC8* RsaEncryptL(

        CRSAPublicKey* aKey,

        const TDesC8& aInput);

    IMPORT_C static HBufC8* RsaVerifyL(

        CRSAPublicKey* aKey,

        const TDesC8& aInput);

    IMPORT_C static HBufC8* RsaKemKwsEncryptL(

        CRSAPublicKey* aKey,

        const TDesC8& aRek,

        const TDesC8& aMac);

    IMPORT_C static void RsaKemKwsDecryptL(

        MDrmKeyStorage* aKeyStorage,

        const TDesC8& aInput,

        TDes8& aRek,

        TDes8& aMac);

    IMPORT_C static HBufC8* KdfL(

        const TDesC8& aInput,

        const TDesC8& aOtherData,

        TInt aKLen);

    IMPORT_C static HBufC8* AesWrapL(

        const TDesC8& aKey,

        const TDesC8& aInput);

    IMPORT_C static HBufC8* AesUnwrapL(

        const TDesC8& aKey,

        const TDesC8& aInput);

    IMPORT_C static HBufC8* I2OSPL(

        RInteger& aInt);

    IMPORT_C static RInteger OS2IPL(

        const TDesC8& aOctetStream);

    IMPORT_C static HBufC8* Mgf1L(

        const TDesC8& aMfgSeed,

        TInt aMaskLen);

    IMPORT_C static HBufC8* RsaPssSignHashL(

        MDrmKeyStorage* aKeyStorage,

        const TDesC8& aMHash);

    IMPORT_C static TBool RsaPssVerifyHashL(

        CRSAPublicKey* aKey,

        const TDesC8& aSignature,

        const TDesC8& aMHash);

protected: // New functions

    IMPORT_C static void WriteUint32ToBlock(

        TUint32 aInt,

        TDes8& aBlock,

        TInt aOffset);

    };

#endif      // OMACRYPTO_H   

// End of File