QCA::Random Class Reference

#include <QtCrypto>

Inheritance diagram for QCA::Random:

Public Member Functions
	Random (const QString &provider=QString())
	Random (const Random &from)
uchar	nextByte ()
SecureArray	nextBytes (int size)
Random &	operator= (const Random &from)
Public Member Functions inherited from QCA::Algorithm
	Algorithm (const Algorithm &from)
void	change (const QString &type, const QString &provider)
void	change (Provider::Context *c)
Provider::Context *	context ()
const Provider::Context *	context () const
Algorithm &	operator= (const Algorithm &from)
Provider *	provider () const
Provider::Context *	takeContext ()
QString	type () const

Static Public Member Functions
static SecureArray	randomArray (int size)
static uchar	randomChar ()
static int	randomInt ()

Additional Inherited Members
Protected Member Functions inherited from QCA::Algorithm
	Algorithm ()
	Algorithm (const QString &type, const QString &provider)

Detailed Description

Source of random numbers.

QCA provides a built in source of random numbers, which can be accessed through this class. You can also use an alternative random number source, by implementing another provider.

The normal use of this class is expected to be through the static members - randomChar(), randomInt() and randomArray().

Examples

randomtest.cpp.

Definition at line 65 of file qca_basic.h.

Constructor & Destructor Documentation

Random() [1/2]

QCA::Random::Random

(

const QString &

provider = QString()

)

Standard Constructor.

Parameters

provider

the name of the provider library for the random number generation

Random() [2/2]

QCA::Random::Random

(

const Random &

from

)

Copy constructor.

Parameters

from	the Random object to copy from

Member Function Documentation

nextByte()

uchar QCA::Random::nextByte

(

)

Provide a random byte.

This method isn't normally required - you should use the static randomChar() method instead.

See also

randomChar

Examples

randomtest.cpp.

nextBytes()

SecureArray QCA::Random::nextBytes

(

int

size

)

Provide a specified number of random bytes.

This method isn't normally required - you should use the static randomArray() method instead.

Parameters

size	the number of bytes to provide

See also

randomArray

Examples

randomtest.cpp.

operator=()

Random & QCA::Random::operator=

(

const Random &

from

)

Assignment operator.

Parameters

from	the Random object to copy state from

randomArray()

static SecureArray QCA::Random::randomArray ( int size )

static

Provide a specified number of random bytes.

// build a 30 byte secure array.
SecureArray arry = QCA::Random::randomArray(30);

Parameters

size	the number of bytes to provide

Examples

randomtest.cpp.

randomChar()

static uchar QCA::Random::randomChar ( )

static

Provide a random character (byte)

This is the normal way of obtaining a single random char (i.e. 8 bit byte), as shown below:

myRandomChar = QCA::Random::randomChar();

If you need a number of bytes, perhaps randomArray() may be of use.

Examples

randomtest.cpp.

randomInt()

static int QCA::Random::randomInt ( )

static

Provide a random integer.

This is the normal way of obtaining a single random integer, as shown below:

myRandomInt = QCA::Random::randomInt();

Examples

randomtest.cpp.

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The documentation for this class was generated from the following file:

• qca_basic.h