Symbian3/SDK/Source/GUID-0CD273A2-434C-52E0-B840-CCF24B2853B8.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 15:24:26 +0000
changeset 2 ebc84c812384
parent 0 89d6a7a84779
permissions -rw-r--r--
week 10 bug fix submission: Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
<!-- This component and the accompanying materials are made available under the terms of the License 
"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: 
-->
<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-0CD273A2-434C-52E0-B840-CCF24B2853B8" xml:lang="en"><title>Generating
Random Bytes</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>This example shows how the <codeph>CRandom::GenerateRandomBytesL()</codeph> method
is used to populate a descriptor with a series of random bytes. </p>
<codeblock id="GUID-69C4E8AB-CF2F-59C4-B96D-5B540602E7A6" xml:space="preserve">
using namespace CryptoSpi;

//Create a pointer to store the factory-generated random implementation object
CRandom* randomImpl = NULL;

//Calling the CreateRandomL() method of the random factory class 
//creates a new CRandom object    
TRAPD(err, CRandomFactory::CreateRandomL(randomImpl, KRandomUid, NULL));

if(randomImpl &amp;&amp; (err == KErrNone))
    {    
    //Create an 8 bit descriptor 50 bytes long with a max length of 50 bytes
    TBuf8&lt;50&gt; randomStr(50);
 
    //Passing the 8 bit descriptor to the CRandom::GenerateRandomBytesL() 
    //method fills it with random bytes. If there is no memory available 
    //or any problems occur, the method may leave.    
    randomImpl-&gt;GenerateRandomBytesL(randomStr); 
    }

//Destroy the random implementation object    
delete randomImpl;
randomImpl = NULL;</codeblock>
</conbody></concept>