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/*
* (C) 2014,2015 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
#include "test_pubkey.h"
#include <botan/pubkey.h>
#include <botan/dh.h>
#endif
namespace Botan_Tests {
namespace {
#if defined(BOTAN_HAS_DIFFIE_HELLMAN)
class Diffie_Hellman_KAT_Tests : public PK_Key_Agreement_Test
{
public:
Diffie_Hellman_KAT_Tests() : PK_Key_Agreement_Test(
"Diffie-Hellman",
"pubkey/dh.vec",
"P,G,X,Y,Msg,OutLen,K",
"Q,KDF")
{}
std::string default_kdf(const VarMap&) const override { return "Raw"; }
std::unique_ptr<Botan::Private_Key> load_our_key(const std::string&, const VarMap& vars) override
{
const Botan::BigInt p = get_req_bn(vars, "P");
const Botan::BigInt q = get_opt_bn(vars, "Q", 0);
const Botan::BigInt g = get_req_bn(vars, "G");
const Botan::BigInt x = get_req_bn(vars, "X");
Botan::DL_Group grp;
if(q == 0)
{
grp = Botan::DL_Group(p, g);
}
else
{
grp = Botan::DL_Group(p, q, g);
}
std::unique_ptr<Botan::Private_Key> key(new Botan::DH_PrivateKey(Test::rng(), grp, x));
return key;
}
std::vector<uint8_t> load_their_key(const std::string&, const VarMap& vars) override
{
const Botan::BigInt p = get_req_bn(vars, "P");
const Botan::BigInt q = get_opt_bn(vars, "Q", 0);
const Botan::BigInt g = get_req_bn(vars, "G");
const Botan::BigInt y = get_req_bn(vars, "Y");
Botan::DL_Group grp;
if(q == 0)
{
grp = Botan::DL_Group(p, g);
}
else
{
grp = Botan::DL_Group(p, q, g);
}
Botan::DH_PublicKey key(grp, y);
return key.public_value();
}
std::vector<Test::Result> run_final_tests() override
{
using namespace Botan;
Test::Result result("DH negative tests");
const BigInt g("2");
const BigInt p("58458002095536094658683755258523362961421200751439456159756164191494576279467");
const DL_Group grp(p, g);
const Botan::BigInt x("46205663093589612668746163860870963912226379131190812163519349848291472898748");
std::unique_ptr<Private_Key> privkey(new DH_PrivateKey(Test::rng(), grp, x));
std::unique_ptr<PK_Key_Agreement> kas(new PK_Key_Agreement(*privkey, rng(), "Raw"));
result.test_throws("agreement input too big",
"Invalid argument DH agreement - invalid key provided",
[&kas]()
{
const BigInt too_big("584580020955360946586837552585233629614212007514394561597561641914945762794672");
kas->derive_key(16, BigInt::encode(too_big));
});
result.test_throws("agreement input too small",
"Invalid argument DH agreement - invalid key provided",
[&kas]()
{
const BigInt too_small("1");
kas->derive_key(16, BigInt::encode(too_small));
});
return{result};
}
};
class DH_Invalid_Key_Tests : public Text_Based_Test
{
public:
DH_Invalid_Key_Tests() :
Text_Based_Test("pubkey/dh_invalid.vec", "P,Q,G,InvalidKey") {}
bool clear_between_callbacks() const override { return false; }
Test::Result run_one_test(const std::string&, const VarMap& vars) override
{
Test::Result result("DH invalid keys");
const Botan::BigInt p = get_req_bn(vars, "P");
const Botan::BigInt q = get_req_bn(vars, "Q");
const Botan::BigInt g = get_req_bn(vars, "G");
const Botan::BigInt pubkey = get_req_bn(vars, "InvalidKey");
Botan::DL_Group grp(p, q, g);
std::unique_ptr<Botan::Public_Key> key(new Botan::DH_PublicKey(grp, pubkey));
result.test_eq("public key fails check", key->check_key(Test::rng(), false), false);
return result;
}
};
class Diffie_Hellman_Keygen_Tests : public PK_Key_Generation_Test
{
public:
std::vector<std::string> keygen_params() const override { return { "modp/ietf/1024", "modp/ietf/2048" }; }
std::string algo_name() const override { return "DH"; }
};
BOTAN_REGISTER_TEST("dh_kat", Diffie_Hellman_KAT_Tests);
BOTAN_REGISTER_TEST("dh_invalid", DH_Invalid_Key_Tests);
BOTAN_REGISTER_TEST("dh_keygen", Diffie_Hellman_Keygen_Tests);
#endif
}
}
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