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#include "tests.h"
#include "test_rng.h"
#include <botan/libstate.h>
#include <botan/hex.h>
#include <iostream>
#include <fstream>
#if defined(BOTAN_HAS_X931_RNG)
#include <botan/x931_rng.h>
#include <botan/aes.h>
#include <botan/des.h>
#endif
using namespace Botan;
namespace {
RandomNumberGenerator* get_rng(const std::string& algo, const std::string& ikm_hex)
{
const auto ikm = hex_decode(ikm_hex);
#if defined(BOTAN_HAS_X931_RNG)
if(algo == "X9.31-RNG(TripleDES)")
return new ANSI_X931_RNG(new TripleDES, new Fixed_Output_RNG(ikm));
else if(algo == "X9.31-RNG(AES-128)")
return new ANSI_X931_RNG(new AES_128, new Fixed_Output_RNG(ikm));
else if(algo == "X9.31-RNG(AES-192)")
return new ANSI_X931_RNG(new AES_192, new Fixed_Output_RNG(ikm));
else if(algo == "X9.31-RNG(AES-256)")
return new ANSI_X931_RNG(new AES_256, new Fixed_Output_RNG(ikm));
#endif
return nullptr;
}
size_t x931_test(const std::string& algo,
const std::string& ikm,
const std::string& out,
size_t L)
{
std::unique_ptr<RandomNumberGenerator> rng(get_rng(algo, ikm));
if(!rng)
throw std::runtime_error("Unknown RNG " + algo);
rng->reseed(0);
const std::string got = hex_encode(rng->random_vec(L));
if(got != out)
{
std::cout << "X9.31 " << got << " != " << out << "\n";
return 1;
}
return 0;
}
}
size_t test_rngs()
{
std::ifstream vec(TEST_DATA_DIR "/x931.vec");
return run_tests_bb(vec, "RNG", "Out", true,
[](std::map<std::string, std::string> m) -> size_t
{
return x931_test(m["RNG"], m["IKM"], m["Out"], to_u32bit(m["L"]));
});
}
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