QCA::Random Class Reference
[QCA user API]

Source of random numbers. More...

#include <QtCrypto>

Inheritance diagram for QCA::Random:

[legend]

List of all members.

Public Member Functions
	Random (const Random &from)
	Random (const QString &provider=QString())
	~Random ()
uchar	nextByte ()
SecureArray	nextBytes (int size)
Random &	operator= (const Random &from)
Static Public Member Functions
static SecureArray	randomArray (int size)
static uchar	randomChar ()
static int	randomInt ()

---

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().

Definition at line 62 of file qca_basic.h.

---

Constructor & Destructor Documentation

QCA::Random::Random

(

const QString &

provider = QString()

)

Standard Constructor.

Parameters:

provider

the name of the provider library for the random number generation

Definition at line 118 of file qca_basic.cpp.

QCA::Random::Random

(

const Random &

from

)

Copy constructor.

Parameters:

from

the Random object to copy from

Definition at line 123 of file qca_basic.cpp.

QCA::Random::~Random

(

)

Definition at line 128 of file qca_basic.cpp.

---

Member Function Documentation

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

Definition at line 138 of file qca_basic.cpp.

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

Definition at line 143 of file qca_basic.cpp.

Random & QCA::Random::operator=

(

const Random &

from

)

Assignment operator.

Parameters:

from

the Random object to copy state from

Reimplemented from QCA::Algorithm.

Definition at line 132 of file qca_basic.cpp.

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

Definition at line 163 of file qca_basic.cpp.

uchar QCA::Random::randomChar

(

)

[static]

Provide a random character (byte).

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

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

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

Definition at line 148 of file qca_basic.cpp.

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();

Definition at line 154 of file qca_basic.cpp.

---

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

• qca_basic.h
• qca_basic.cpp