QCA::Random Class Reference
[QCA user API]

Source of random numbers. More...

#include <QtCrypto>

Inheritance diagram for QCA::Random:

QCA::Algorithm
Collaboration diagram for QCA::Random:

Collaboration graph
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List of all members.

Public Member Functions

uchar nextByte ()
SecureArray nextBytes (int size)
Randomoperator= (const Random &from)
 Random (const Random &from)
 Random (const QString &provider=QString())

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().

Examples:

randomtest.cpp.


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

QCA::Random::Random ( const Random from  ) 

Copy constructor.

Parameters:
from the Random object to copy from


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
Examples:
randomtest.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
Examples:
randomtest.cpp.

Random& QCA::Random::operator= ( const Random from  ) 

Assignment operator.

Parameters:
from the Random object to copy state from

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.

static 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.

Examples:
randomtest.cpp.

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.


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

Generated on Wed Apr 29 15:16:08 2009 for Qt Cryptographic Architecture by  doxygen 1.5.5