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/*
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* Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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* Example CTestStep derived implementation
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*
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*/
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/**
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@file
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@internalTechnology
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*/
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#include "keyexchangesyncstep.h"
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#include <cryptospi/keypair.h>
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#include <cryptospi/cryptokeypairgeneratorapi.h>
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#include <cryptospi/cryptokeyagreementapi.h>
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#include <bigint.h>
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using namespace CryptoSpi;
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CKeyExchangeSyncStep::~CKeyExchangeSyncStep()
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{
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}
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CKeyExchangeSyncStep::CKeyExchangeSyncStep()
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{
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SetTestStepName(KKeyExchangeSyncStep);
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}
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TVerdict CKeyExchangeSyncStep::doTestStepPreambleL()
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{
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SetTestStepResult(EPass);
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return TestStepResult();
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}
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TVerdict CKeyExchangeSyncStep::doTestStepL()
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{
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INFO_PRINTF1(_L("*** Key Exchange - DH Key Agreement ***"));
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INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
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if (TestStepResult()==EPass)
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{
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//Assume faliure, unless all is successful
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SetTestStepResult(EFail);
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TVariantPtrC testVariant;
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TVariantPtrC dhnVariant;
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TVariantPtrC dhgVariant;
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if( !GetStringFromConfig(ConfigSection(),KConfigExchangeKey, dhnVariant) ||
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!GetStringFromConfig(ConfigSection(),KConfigExchangeKey, dhgVariant )
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)
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{
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// Leave if there's any error.
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User::Leave(KErrNotFound);
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}
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else
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{
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/*
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* both DH keys (ie our private and their public keys) must use the same N and G parameters
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*/
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INFO_PRINTF1(_L("Creating Primes and Base Integers..."));
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RInteger DH_N = RInteger::NewPrimeL(1024); // from ini file
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CleanupClosePushL(DH_N);
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RInteger DH_N_MinusTwo = RInteger::NewL(DH_N);
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CleanupClosePushL(DH_N_MinusTwo);
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DH_N_MinusTwo-=2;
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RInteger DH_G = RInteger::NewRandomL(TInteger::Two(), DH_N_MinusTwo);
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CleanupClosePushL(DH_G);
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INFO_PRINTF1(_L("Creating Key Pair Generator..."));
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// create a DH key pair generator interface for creating the 2 key pairs
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CKeyPairGenerator* keyPairGeneratorImpl = NULL;
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TRAPD_LOG(err,CKeyPairGeneratorFactory::CreateKeyPairGeneratorL(keyPairGeneratorImpl,
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KDHKeyPairGeneratorUid,
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NULL));
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if(keyPairGeneratorImpl && (err==KErrNone))
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{
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CleanupStack::PushL(keyPairGeneratorImpl);
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// package up the common parameters N and G for use through the rest of this method
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CCryptoParams* keyParameters = CCryptoParams::NewLC();
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keyParameters->AddL(DH_N, KDhKeyParameterNUid);
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keyParameters->AddL(DH_G, KDhKeyParameterGUid);
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/*
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* call the api to create a DH key pair for alice
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*/
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INFO_PRINTF1(_L("Generating DH ALICE Key Pair..."));
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CKeyPair* keyAlice = NULL;
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TRAP_LOG(err,keyPairGeneratorImpl->GenerateKeyPairL(NULL,
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*keyParameters,
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keyAlice));
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CleanupStack::PushL(keyAlice);
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/*
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* call the api to create a DH key pair for bob
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*/
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INFO_PRINTF1(_L("Generating DH BOB Key Pair..."));
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CKeyPair* keyBob = NULL;
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TRAP_LOG(err,keyPairGeneratorImpl->GenerateKeyPairL(NULL,
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*keyParameters,
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keyBob));
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CleanupStack::PushL(keyBob);
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/*
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* get DH key agreement interfaces
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*/
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INFO_PRINTF1(_L("Generating ALICE & BOB Key Agreement Interfaces..."));
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CKeyAgreement* keyAgreementAliceImpl = NULL;
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TRAP_LOG(err,CKeyAgreementFactory::CreateKeyAgreementL(keyAgreementAliceImpl,
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KDHAgreementUid,
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keyAlice->PrivateKey(),
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keyParameters));
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CleanupStack::PushL(keyAgreementAliceImpl);
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CKeyAgreement* keyAgreementBobImpl = NULL;
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TRAP_LOG(err,CKeyAgreementFactory::CreateKeyAgreementL(keyAgreementBobImpl,
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KDHAgreementUid,
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keyBob->PrivateKey(),
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keyParameters));
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CleanupStack::PushL(keyAgreementBobImpl);
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/*
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* call the api to get a DH agreed keys
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*/
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INFO_PRINTF1(_L("Generating Agreed Keys..."));
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CKey* agreedKeyAlice = keyAgreementAliceImpl->AgreeL(keyBob->PublicKey(), keyParameters);
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CleanupStack::PushL(agreedKeyAlice);
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CKey* agreedKeyBob = keyAgreementBobImpl->AgreeL(keyAlice->PublicKey(), keyParameters);
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CleanupStack::PushL(agreedKeyBob);
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/*
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* compare the agreed keys
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*/
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const TInteger& agreedKeyDataAlice = agreedKeyAlice->GetBigIntL(KSymmetricKeyParameterUid);
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const TInteger& agreedKeyDataBob = agreedKeyBob->GetBigIntL(KSymmetricKeyParameterUid);
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if (agreedKeyDataAlice == agreedKeyDataBob)
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{
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INFO_PRINTF1(_L("*** PASS : Key Agreement Success ***"));
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SetTestStepResult(EPass);
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}
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else
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{
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INFO_PRINTF1(_L("*** FAIL : Agreed Keys Mismatch ***"));
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SetTestStepResult(EFail);
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}
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// Set the private keys to check the new agreements.
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keyAgreementAliceImpl->SetKeyL(keyAlice->PrivateKey(), keyParameters);
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keyAgreementAliceImpl->SetKeyL(keyBob->PrivateKey(), keyParameters);
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/*
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* call the api to get a DH agreed keys
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*/
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INFO_PRINTF1(_L("Generating Agreed Keys second time..."));
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CKey* agreedKeyAlice1 = keyAgreementAliceImpl->AgreeL(keyBob->PublicKey(), keyParameters);
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CleanupStack::PushL(agreedKeyAlice1);
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CKey* agreedKeyBob1 = keyAgreementBobImpl->AgreeL(keyAlice->PublicKey(), keyParameters);
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CleanupStack::PushL(agreedKeyBob1);
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/*
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* compare the agreed keys
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*/
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const TInteger& agreedKeyDataAlice1 = agreedKeyAlice->GetBigIntL(KSymmetricKeyParameterUid);
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const TInteger& agreedKeyDataBob1 = agreedKeyBob->GetBigIntL(KSymmetricKeyParameterUid);
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if (agreedKeyDataAlice1 != agreedKeyDataBob1)
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{
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INFO_PRINTF1(_L("*** FAIL : Second Agreed Keys Mismatch ***"));
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SetTestStepResult(EFail);
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}
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const CCryptoParams& cryptoParams1 = agreedKeyAlice1->KeyParameters();
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const CCryptoParams& cryptoParams2 = agreedKeyBob1->KeyParameters();
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if (cryptoParams1.Count() != cryptoParams2.GetParams().Count())
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{
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INFO_PRINTF1(_L("*** FAIL : Key Parameters' Count Mismatch ***"));
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SetTestStepResult(EFail);
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}
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TInt paramLength = 10;
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HBufC16* buf = HBufC16::NewLC(paramLength);
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TPtr16 ptr = buf->Des();
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ptr.Copy(_L("DH_N"));
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CCryptoParams* params = CCryptoParams::NewL();
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params->AddL(*buf, KDhKeyParameterNUid);
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if(!params->Count())
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{
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INFO_PRINTF1(_L("*** FAIL : Parameter construction with descriptor failed ***"));
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SetTestStepResult(EFail);
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}
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if (agreedKeyAlice1->IsPresent(KSymmetricKeyParameterUid))
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{
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TRAPD(err, agreedKeyAlice1->GetTIntL(KSymmetricKeyParameterUid));
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if(err == KErrNone)
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{
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INFO_PRINTF1(_L("*** FAIL : Expected Key Parameter Int Value Mismatch ***"));
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SetTestStepResult(EFail);
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}
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}
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// Clear the second key agreement elements.
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CleanupStack::PopAndDestroy(3, agreedKeyAlice1);
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/*
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* cleanup stack - it should contain privateKey, keyAgreementImpl, publicKey, keyParameters and agreedKey
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*/
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CleanupStack::PopAndDestroy(agreedKeyBob);
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CleanupStack::PopAndDestroy(agreedKeyAlice);
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CleanupStack::PopAndDestroy(keyAgreementBobImpl);
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CleanupStack::PopAndDestroy(keyAgreementAliceImpl);
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CleanupStack::PopAndDestroy(keyBob);
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CleanupStack::PopAndDestroy(keyAlice);
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CleanupStack::PopAndDestroy(keyParameters);
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CleanupStack::PopAndDestroy(keyPairGeneratorImpl);
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}
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CleanupStack::PopAndDestroy(&DH_G);
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CleanupStack::PopAndDestroy(&DH_N_MinusTwo);
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CleanupStack::PopAndDestroy(&DH_N);
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}
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INFO_PRINTF2(_L("HEAP CELLS: %d"), User::CountAllocCells());
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}
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return TestStepResult();
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}
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TVerdict CKeyExchangeSyncStep::doTestStepPostambleL()
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{
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return TestStepResult();
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}
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