# RandomNumberGenerator Class Reference

`#include <cryptlib.h>`

Inheritance diagram for RandomNumberGenerator:

List of all members.

## Detailed Description

interface for random number generators

All return values are uniformly distributed over the range specified.

Definition at line 680 of file cryptlib.h.

## Public Member Functions
virtual void | IncorporateEntropy (const byte *input, size_t length)
| update RNG state with additional unpredictable values
virtual bool | CanIncorporateEntropy () const
| returns true if IncorporateEntropy is implemented
virtual byte | GenerateByte ()
| generate new random byte and return it
virtual unsigned int | GenerateBit ()
| generate new random bit and return it
virtual word32 | GenerateWord32 (word32 a=0, word32 b=0xffffffffL)
| generate a random 32 bit word in the range min to max, inclusive
virtual void | GenerateBlock (byte *output, size_t size)
| generate random array of bytes
virtual void | DiscardBytes (size_t n)
| generate and discard n bytes
virtual void | GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length)
| generate random bytes as input to a BufferedTransformation
template<class IT>
void | Shuffle (IT begin, IT end)
| randomly shuffle the specified array, resulting permutation is uniformly distributed
virtual std::string | AlgorithmName () const
| returns name of this algorithm, not universally implemented yet
virtual Clonable * | Clone () const
| this is not implemented by most classes yet

## Member Function Documentation

unsigned int RandomNumberGenerator::GenerateBit | ( |  | ) | `[virtual]`

generate new random bit and return it

Default implementation is to call GenerateByte() and return its lowest bit.

Reimplemented in PublicBlumBlumShub.

Definition at line 229 of file cryptlib.cpp.

References GenerateByte().

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

- cryptlib.h
- cryptlib.cpp