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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;
class Saver_Of_Bytes : public Entropy_Accumulator
{
public:
Saver_Of_Bytes(u32bit bits) :
Entropy_Accumulator(bits), outbuf(64), written(0) {}
void add_bytes(const byte in[], u32bit length)
{
for(size_t i = 0; i != length; ++i)
outbuf[i % outbuf.size()] ^= in[i];
written += length;
}
void trunc() { if(written < 64) outbuf.resize(written); }
std::vector<byte> outbuf;
u32bit written;
};
void test_entropy_source(EntropySource* es)
{
// sometimes iostreams really is just a pain
printf("Polling '%s':\n", es->name().c_str());
Saver_Of_Bytes accum(128);
es->poll(accum);
accum.trunc();
printf("Got %d bytes\n", accum.written);
for(size_t i = 0; i != accum.outbuf.size(); ++i)
printf("%02X", accum.outbuf[i]);
printf("\n");
delete es;
}
int main()
{
Botan::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"));
#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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