#include <es_capi.h>

Inheritance diagram for Botan::Win32_CAPI_EntropySource:

Public Member Functions
std::string	name () const
void	poll (Entropy_Accumulator &accum)
	Win32_CAPI_EntropySource (const std::string &provs="")

Detailed Description

Win32 CAPI Entropy Source

Definition at line 19 of file es_capi.h.

Constructor & Destructor Documentation

◆ Win32_CAPI_EntropySource()

Botan::Win32_CAPI_EntropySource::Win32_CAPI_EntropySource ( const std::string & provs = "" )

Win32_Capi_Entropysource Constructor

Parameters

provs list of providers, separated by ':'

Definition at line 77 of file es_capi.cpp.

   {
   std::vector<std::string> capi_provs = split_on(provs, ':');
 
   for(size_t i = 0; i != capi_provs.size(); ++i)
      {
      if(capi_provs[i] == "RSA_FULL")  prov_types.push_back(PROV_RSA_FULL);
      if(capi_provs[i] == "INTEL_SEC") prov_types.push_back(PROV_INTEL_SEC);
      if(capi_provs[i] == "FORTEZZA")  prov_types.push_back(PROV_FORTEZZA);
      if(capi_provs[i] == "RNG")       prov_types.push_back(PROV_RNG);
      }
 
   if(prov_types.size() == 0)
      prov_types.push_back(PROV_RSA_FULL);
   }

References Botan::split_on().

Member Function Documentation

◆ name()

std::string Botan::Win32_CAPI_EntropySource::name ( ) const

inlinevirtual

Returns: name identifying this entropy source

Implements Botan::EntropySource.

Definition at line 22 of file es_capi.h.

22{ return "Win32 CryptoGenRandom"; }

◆ poll()

void Botan::Win32_CAPI_EntropySource::poll ( Entropy_Accumulator & accum )

virtual

Perform an entropy gathering poll

Parameters

accum is an accumulator object that will be given entropy

Implements Botan::EntropySource.

Definition at line 56 of file es_capi.cpp.

   {
   MemoryRegion<byte>& io_buffer = accum.get_io_buffer(32);
 
   for(size_t i = 0; i != prov_types.size(); ++i)
      {
      CSP_Handle csp(prov_types[i]);
 
      size_t got = csp.gen_random(&io_buffer[0], io_buffer.size());
 
      if(got)
         {
         accum.add(&io_buffer[0], io_buffer.size(), 6);
         break;
         }
      }
   }

References Botan::Entropy_Accumulator::add(), Botan::Entropy_Accumulator::get_io_buffer(), and Botan::MemoryRegion< T >::size().

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