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#include <botan/botan.h>
#include <stdio.h>
#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
#include <botan/es_dev.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
#include <botan/es_egd.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
#include <botan/es_unix.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
#include <botan/es_beos.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
#include <botan/es_capi.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
#include <botan/es_win32.h>
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
#include <botan/es_ftw.h>
#endif
using namespace Botan;
void test_entropy_source(EntropySource* es,
EntropySource* es2 = 0)
{
// sometimes iostreams really is just a pain
printf("Polling '%s':\n", es->name().c_str());
Entropy_Accumulator accum1(256);
es->poll(accum1);
Entropy_Accumulator accum2(256);
if(es2)
es2->poll(accum2);
else
es->poll(accum2);
SecureVector<byte> polled1 = accum1.get_entropy_buffer();
SecureVector<byte> polled2 = accum2.get_entropy_buffer();
SecureVector<byte> compare(std::min(polled1.size(), polled2.size()));
for(u32bit i = 0; i != compare.size(); ++i)
compare[i] = polled1[i] ^ polled2[i];
for(u32bit i = 0; i != compare.size(); ++i)
printf("%02X", compare[i]);
printf("\n");
delete es;
delete es2;
}
int main()
{
LibraryInitializer init;
#if defined(BOTAN_HAS_ENTROPY_SRC_DEVICE)
test_entropy_source(
new Device_EntropySource(
split_on("/dev/random:/dev/srandom:/dev/urandom", ':')
)
);
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_EGD)
test_entropy_source(
new EGD_EntropySource(split_on("/var/run/egd-pool:/dev/egd-pool", ':'))
);
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_CAPI)
test_entropy_source(new Win32_CAPI_EntropySource);
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_FTW)
test_entropy_source(new FTW_EntropySource("/proc"),
new FTW_EntropySource("/proc"));
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_WIN32)
test_entropy_source(new Win32_EntropySource);
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_BEOS)
test_entropy_source(new BeOS_EntropySource);
#endif
#if defined(BOTAN_HAS_ENTROPY_SRC_UNIX)
test_entropy_source(
new Unix_EntropySource(split_on("/bin:/sbin:/usr/bin:/usr/sbin", ':'))
);
#endif
}
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