Botan 3.0.0-alpha0
Crypto and TLS for C&
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 Entropy_Sources &other)=delete
 
 Entropy_Sources (const std::vector< std::string > &sources)
 
 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 186 of file entropy_srcs.cpp.

187 {
188 for(auto&& src_name : sources)
189 {
191 }
192 }
static std::unique_ptr< Entropy_Source > create(const std::string &type)
void add_source(std::unique_ptr< Entropy_Source > src)

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

◆ 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 134 of file entropy_srcs.cpp.

135 {
136 if(src.get())
137 {
138 m_srcs.push_back(std::move(src));
139 }
140 }

Referenced by Entropy_Sources().

◆ enabled_sources()

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

Definition at line 142 of file entropy_srcs.cpp.

143 {
144 std::vector<std::string> sources;
145 for(const auto& src : m_srcs)
146 {
147 sources.push_back(src->name());
148 }
149 return sources;
150 }

◆ global_sources()

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

Definition at line 194 of file entropy_srcs.cpp.

195 {
196 static Entropy_Sources global_entropy_sources(BOTAN_ENTROPY_DEFAULT_SOURCES);
197
198 return global_entropy_sources;
199 }
#define BOTAN_ENTROPY_DEFAULT_SOURCES
Definition: build.h:421

References BOTAN_ENTROPY_DEFAULT_SOURCES.

◆ 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 152 of file entropy_srcs.cpp.

155 {
156 typedef std::chrono::system_clock clock;
157
158 auto deadline = clock::now() + timeout;
159
160 size_t bits_collected = 0;
161
162 for(auto& src : m_srcs)
163 {
164 bits_collected += src->poll(rng);
165
166 if (bits_collected >= poll_bits || clock::now() > deadline)
167 break;
168 }
169
170 return bits_collected;
171 }

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

◆ 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 173 of file entropy_srcs.cpp.

174 {
175 for(auto& src : m_srcs)
176 {
177 if(src->name() == the_src)
178 {
179 return src->poll(rng);
180 }
181 }
182
183 return 0;
184 }

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