Botan  2.15.0
Crypto and TLS for C++11
Public Member Functions | Static Public Member Functions | List of all members
Botan::Entropy_Sources Class Referencefinal

#include <entropy_src.h>

Public Member Functions

void add_source (std::unique_ptr< Entropy_Source > src)
 
std::vector< std::string > enabled_sources () const
 
 Entropy_Sources ()=default
 
 Entropy_Sources (const std::vector< std::string > &sources)
 
 Entropy_Sources (const Entropy_Sources &other)=delete
 
 Entropy_Sources (Entropy_Sources &&other)=delete
 
Entropy_Sourcesoperator= (const Entropy_Sources &other)=delete
 
size_t poll (RandomNumberGenerator &rng, size_t bits, std::chrono::milliseconds timeout)
 
size_t poll_just (RandomNumberGenerator &rng, const std::string &src)
 

Static Public Member Functions

static Entropy_Sourcesglobal_sources ()
 

Detailed Description

Definition at line 56 of file entropy_src.h.

Constructor & Destructor Documentation

◆ Entropy_Sources() [1/4]

Botan::Entropy_Sources::Entropy_Sources ( )
default

◆ Entropy_Sources() [2/4]

Botan::Entropy_Sources::Entropy_Sources ( const std::vector< std::string > &  sources)
explicit

Definition at line 219 of file entropy_srcs.cpp.

References add_source(), and Botan::Entropy_Source::create().

220  {
221  for(auto&& src_name : sources)
222  {
224  }
225  }
void add_source(std::unique_ptr< Entropy_Source > src)
static std::unique_ptr< Entropy_Source > create(const std::string &type)

◆ Entropy_Sources() [3/4]

Botan::Entropy_Sources::Entropy_Sources ( const Entropy_Sources other)
delete

◆ Entropy_Sources() [4/4]

Botan::Entropy_Sources::Entropy_Sources ( Entropy_Sources &&  other)
delete

Member Function Documentation

◆ add_source()

void Botan::Entropy_Sources::add_source ( std::unique_ptr< Entropy_Source src)

Definition at line 167 of file entropy_srcs.cpp.

Referenced by Entropy_Sources().

168  {
169  if(src.get())
170  {
171  m_srcs.push_back(std::move(src));
172  }
173  }

◆ enabled_sources()

std::vector< std::string > Botan::Entropy_Sources::enabled_sources ( ) const

Definition at line 175 of file entropy_srcs.cpp.

References name.

176  {
177  std::vector<std::string> sources;
178  for(size_t i = 0; i != m_srcs.size(); ++i)
179  {
180  sources.push_back(m_srcs[i]->name());
181  }
182  return sources;
183  }
std::string name

◆ global_sources()

Entropy_Sources & Botan::Entropy_Sources::global_sources ( )
static

Definition at line 227 of file entropy_srcs.cpp.

228  {
229  static Entropy_Sources global_entropy_sources(BOTAN_ENTROPY_DEFAULT_SOURCES);
230 
231  return global_entropy_sources;
232  }

◆ operator=()

Entropy_Sources& Botan::Entropy_Sources::operator= ( const Entropy_Sources other)
delete

◆ poll()

size_t Botan::Entropy_Sources::poll ( RandomNumberGenerator rng,
size_t  bits,
std::chrono::milliseconds  timeout 
)

Definition at line 185 of file entropy_srcs.cpp.

Referenced by Botan::RandomNumberGenerator::reseed().

188  {
189  typedef std::chrono::system_clock clock;
190 
191  auto deadline = clock::now() + timeout;
192 
193  size_t bits_collected = 0;
194 
195  for(size_t i = 0; i != m_srcs.size(); ++i)
196  {
197  bits_collected += m_srcs[i]->poll(rng);
198 
199  if (bits_collected >= poll_bits || clock::now() > deadline)
200  break;
201  }
202 
203  return bits_collected;
204  }

◆ poll_just()

size_t Botan::Entropy_Sources::poll_just ( RandomNumberGenerator rng,
const std::string &  src 
)

Poll just a single named source. Ordinally only used for testing

Definition at line 206 of file entropy_srcs.cpp.

References name.

207  {
208  for(size_t i = 0; i != m_srcs.size(); ++i)
209  {
210  if(m_srcs[i]->name() == the_src)
211  {
212  return m_srcs[i]->poll(rng);
213  }
214  }
215 
216  return 0;
217  }
std::string name

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