Crypto++ 8.2
Free C&
Public Member Functions | List of all members
ClassNullRNG Class Reference

Random Number Generator that does not produce random numbers. More...

+ Inheritance diagram for ClassNullRNG:

Public Member Functions

std::string AlgorithmName () const
 The name of the generator.
 
byte GenerateByte ()
 An implementation that throws NotImplemented.
 
unsigned int GenerateBit ()
 An implementation that throws NotImplemented.
 
word32 GenerateWord32 (word32 min, word32 max)
 An implementation that throws NotImplemented.
 
void GenerateBlock (byte *output, size_t size)
 An implementation that throws NotImplemented.
 
void GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length)
 An implementation that throws NotImplemented.
 
void IncorporateEntropy (const byte *input, size_t length)
 An implementation that throws NotImplemented.
 
bool CanIncorporateEntropy () const
 An implementation that returns false.
 
void DiscardBytes (size_t n)
 An implementation that does nothing.
 
void Shuffle (IT begin, IT end)
 An implementation that does nothing.
 
- Public Member Functions inherited from RandomNumberGenerator
virtual void IncorporateEntropy (const byte *input, size_t length)
 Update RNG state with additional unpredictable values.
 
virtual bool CanIncorporateEntropy () const
 Determines if a generator can accept additional entropy.
 
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 min=0, word32 max=0xffffffffUL)
 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 GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length)
 Generate random bytes into a BufferedTransformation.
 
virtual void DiscardBytes (size_t n)
 Generate and discard n bytes.
 
template<class IT >
void Shuffle (IT begin, IT end)
 Randomly shuffle the specified array.
 
- Public Member Functions inherited from Algorithm
 Algorithm (bool checkSelfTestStatus=true)
 Interface for all crypto algorithms.
 
virtual std::string AlgorithmName () const
 Provides the name of this algorithm.
 
virtual std::string AlgorithmProvider () const
 Retrieve the provider of this algorithm.
 
virtual ClonableClone () const
 Copies this object.
 

Detailed Description

Random Number Generator that does not produce random numbers.

ClassNullRNG can be used for functions that require a RandomNumberGenerator but don't actually use it. The class throws NotImplemented when a generation function is called.

See also
NullRNG()

Definition at line 360 of file cryptlib.cpp.

Member Function Documentation

◆ AlgorithmName()

std::string ClassNullRNG::AlgorithmName ( ) const
inlinevirtual

The name of the generator.

Returns
the string NullRNGs

Reimplemented from Algorithm.

Definition at line 365 of file cryptlib.cpp.

◆ GenerateByte()

byte ClassNullRNG::GenerateByte ( )
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 369 of file cryptlib.cpp.

◆ GenerateBit()

unsigned int ClassNullRNG::GenerateBit ( )
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 371 of file cryptlib.cpp.

◆ GenerateWord32()

word32 ClassNullRNG::GenerateWord32 ( word32  min,
word32  max 
)
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 373 of file cryptlib.cpp.

◆ GenerateBlock()

void ClassNullRNG::GenerateBlock ( byte *  output,
size_t  size 
)
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 377 of file cryptlib.cpp.

◆ GenerateIntoBufferedTransformation()

void ClassNullRNG::GenerateIntoBufferedTransformation ( BufferedTransformation target,
const std::string &  channel,
lword  length 
)
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 385 of file cryptlib.cpp.

◆ IncorporateEntropy()

void ClassNullRNG::IncorporateEntropy ( const byte *  input,
size_t  length 
)
inlinevirtual

An implementation that throws NotImplemented.

Reimplemented from RandomNumberGenerator.

Definition at line 387 of file cryptlib.cpp.

◆ CanIncorporateEntropy()

bool ClassNullRNG::CanIncorporateEntropy ( ) const
inlinevirtual

An implementation that returns false.

Reimplemented from RandomNumberGenerator.

Definition at line 389 of file cryptlib.cpp.

◆ DiscardBytes()

void ClassNullRNG::DiscardBytes ( size_t  n)
inlinevirtual

An implementation that does nothing.

Reimplemented from RandomNumberGenerator.

Definition at line 391 of file cryptlib.cpp.

◆ Shuffle()

void ClassNullRNG::Shuffle ( IT  begin,
IT  end 
)
inline

An implementation that does nothing.

Definition at line 393 of file cryptlib.cpp.


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