sl@0: /*
sl@0: * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: #include "cryptospihai.h"
sl@0: #include "keys.h"
sl@0: #include <e32def.h>
sl@0: #include <cryptospi/cryptohashapi.h>
sl@0: #include <pbedata.h>
sl@0: #include "tcryptotokenhai.h"
sl@0: 
sl@0: using namespace CryptoSpiHai;
sl@0: 
sl@0: /**
sl@0:  * Performs the signing operation.
sl@0:  * 
sl@0:  * A cryptoSPI plugin uses this, when it does not have access to the  
sl@0:  * actual key.
sl@0:  * 
sl@0:  * @param aKeyHandle The key handle retrieved from hw crypto 
sl@0:  * token
sl@0:  * @param aInput The text which has to be signed. This is not being 
sl@0:  * used due to signing logic used in this function.
sl@0:  * @param aSignature Output param. The cryptoSPI signature.
sl@0:  * 
sl@0:  * @leave Can leave with all the leave codes present in HAI of 
sl@0:  * reference crypto token implementation.
sl@0:  * 
sl@0:  * @note This function does not actually implement ECC signing. This 
sl@0:  * function just shows how the private key can be extracted from 
sl@0:  * crypto token hai. This function just returns the private key as 
sl@0:  * output signature. The caller can verify the signature by ensuring 
sl@0:  * that test case has same public and private keys and then comparing 
sl@0:  * the signature with public key.
sl@0:  */
sl@0: EXPORT_C void CCryptoSpiHai::SignL(TInt aKeyHandle,
sl@0:         const TDesC8& /*aInput*/, CryptoSpi::CCryptoParams& aSignature)
sl@0:     {
sl@0:     MCTToken* token = NULL;
sl@0:     /**
sl@0:      * We are dereferencing a NULL pointer below. We need to pass 
sl@0:      * MCTToken here. It is not used currently.
sl@0:      */
sl@0:     CCryptoTokenHai *cryptoTokenHai = CCryptoTokenHai::NewLC(token);
sl@0: 
sl@0:     //Call Crypto Token HAI to get the actual key
sl@0:     HBufC8* actualKey = NULL;
sl@0:     cryptoTokenHai->ExportPrivateKeyL(aKeyHandle, actualKey);
sl@0:     CleanupStack::PushL(actualKey);
sl@0: 
sl@0:     aSignature.AddL(*actualKey, CryptoSpi::KEccKeyTypeUid);
sl@0:     CleanupStack::PopAndDestroy(actualKey);
sl@0:     CleanupStack::PopAndDestroy(cryptoTokenHai);
sl@0:     }
sl@0: 
sl@0: /**
sl@0:  * Performs the decryption operation.
sl@0:  * 
sl@0:  * A cryptoSPI plugin uses this, when it does not have access to the 
sl@0:  * actual key.
sl@0:  * 
sl@0:  * @param aKeyHandle The key handle retrieved from hw crypto token
sl@0:  * @param aInput The cipher text. This is not being used due to signing  
sl@0:  * logic used in this function.
sl@0:  * @param aOutput Output param. The decrypted plain text
sl@0:  * 
sl@0:  * @leave Can leave with all the leave codes present in HAI of 
sl@0:  * reference crypto token implementation.
sl@0:  *
sl@0:  * @note This function does not actually implement ECC decryption. This 
sl@0:  * function just shows how the private key can be extracted from 
sl@0:  * crypto token hai. This function just returns the private key as 
sl@0:  * decrypted text. The caller can verify the decryption by ensuring 
sl@0:  * that test case has same public and private keys and then comparing 
sl@0:  * the decrypted text with public key. 
sl@0:  */
sl@0: EXPORT_C void CCryptoSpiHai::DecryptL(TInt aKeyHandle,
sl@0:         const TDesC8& /*aInput*/, TDes8& aOutput)
sl@0:     {
sl@0:     MCTToken* token = NULL;
sl@0:     CCryptoTokenHai *cryptoTokenHai = CCryptoTokenHai::NewLC(token);
sl@0: 
sl@0:     //Call Crypto Token HAI to get the actual key
sl@0:     HBufC8* actualKey = NULL;
sl@0:     cryptoTokenHai->ExportPrivateKeyL(aKeyHandle, actualKey);
sl@0:     CleanupStack::PushL(actualKey);
sl@0:     aOutput.Copy(*actualKey);
sl@0: 
sl@0:     CleanupStack::PopAndDestroy(actualKey);
sl@0:     CleanupStack::PopAndDestroy(cryptoTokenHai);
sl@0:     }
sl@0: 
sl@0: // End of file
sl@0: 
sl@0: