Botan  1.10.9
Classes | Public Member Functions | List of all members
Botan::EGD_EntropySource Class Reference

#include <es_egd.h>

Inheritance diagram for Botan::EGD_EntropySource:
Botan::EntropySource

Public Member Functions

 EGD_EntropySource (const std::vector< std::string > &)
 
std::string name () const
 
void poll (Entropy_Accumulator &accum)
 
 ~EGD_EntropySource ()
 

Detailed Description

EGD Entropy Source

Definition at line 20 of file es_egd.h.

Constructor & Destructor Documentation

Botan::EGD_EntropySource::EGD_EntropySource ( const std::vector< std::string > &  paths)

EGD_EntropySource constructor

Definition at line 122 of file es_egd.cpp.

123  {
124  for(size_t i = 0; i != paths.size(); ++i)
125  sockets.push_back(EGD_Socket(paths[i]));
126  }
Botan::EGD_EntropySource::~EGD_EntropySource ( )

Definition at line 128 of file es_egd.cpp.

129  {
130  for(size_t i = 0; i != sockets.size(); ++i)
131  sockets[i].close();
132  sockets.clear();
133  }

Member Function Documentation

std::string Botan::EGD_EntropySource::name ( ) const
inlinevirtual
Returns
name identifying this entropy source

Implements Botan::EntropySource.

Definition at line 23 of file es_egd.h.

23 { return "EGD/PRNGD"; }
void Botan::EGD_EntropySource::poll ( Entropy_Accumulator accum)
virtual

Gather Entropy from EGD

Implements Botan::EntropySource.

Definition at line 138 of file es_egd.cpp.

References Botan::Entropy_Accumulator::add(), Botan::Entropy_Accumulator::desired_remaining_bits(), and Botan::Entropy_Accumulator::get_io_buffer().

139  {
140  size_t go_get = std::min<size_t>(accum.desired_remaining_bits() / 8, 32);
141 
142  MemoryRegion<byte>& io_buffer = accum.get_io_buffer(go_get);
143 
144  for(size_t i = 0; i != sockets.size(); ++i)
145  {
146  size_t got = sockets[i].read(&io_buffer[0], io_buffer.size());
147 
148  if(got)
149  {
150  accum.add(&io_buffer[0], got, 6);
151  break;
152  }
153  }
154  }

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