Crypto++  5.6.5
Free C++ class library of cryptographic schemes
Public Member Functions | List of all members
NonblockingRng Class Reference

Wrapper class for /dev/random and /dev/srandom. More...

+ Inheritance diagram for NonblockingRng:

Public Member Functions

 NonblockingRng ()
 Construct a NonblockingRng.
void GenerateBlock (byte *output, size_t size)
 Generate random array of bytes. More...
- Public Member Functions inherited from RandomNumberGenerator
virtual void IncorporateEntropy (const byte *input, size_t length)
 Update RNG state with additional unpredictable values. More...
virtual bool CanIncorporateEntropy () const
 Determines if a generator can accept additional entropy. More...
virtual byte GenerateByte ()
 Generate new random byte and return it. More...
virtual unsigned int GenerateBit ()
 Generate new random bit and return it. More...
virtual word32 GenerateWord32 (word32 min=0, word32 max=0xffffffffUL)
 Generate a random 32 bit word in the range min to max, inclusive. More...
virtual void GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length)
 Generate random bytes into a BufferedTransformation. More...
virtual void DiscardBytes (size_t n)
 Generate and discard n bytes. More...
template<class IT >
void Shuffle (IT begin, IT end)
 Randomly shuffle the specified array. More...
- Public Member Functions inherited from Algorithm
 Algorithm (bool checkSelfTestStatus=true)
 Interface for all crypto algorithms. More...
virtual std::string AlgorithmName () const
 Provides the name of this algorithm. More...
- Public Member Functions inherited from Clonable
virtual ClonableClone () const
 Copies this object. More...

Detailed Description

Wrapper class for /dev/random and /dev/srandom.

Encapsulates CryptoAPI's CryptGenRandom() or CryptoNG's BCryptGenRandom() on Windows, or /dev/urandom on Unix and compatibles.

Definition at line 87 of file osrng.h.

Member Function Documentation

void NonblockingRng::GenerateBlock ( byte *  output,
size_t  size 

Generate random array of bytes.

outputthe byte buffer
sizethe length of the buffer, in bytes

GenerateIntoBufferedTransformation() calls are routed to GenerateBlock().

Reimplemented from RandomNumberGenerator.

Definition at line 149 of file osrng.cpp.

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