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<!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 && (err == KErrNone))

    {    

    //Create an 8 bit descriptor 50 bytes long with a max length of 50 bytes

    TBuf8<50> 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->GenerateRandomBytesL(randomStr); 

    }

//Destroy the random implementation object    

delete randomImpl;

randomImpl = NULL;</codeblock>