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/*
* (C) 2014,2015 Jack Lloyd
* (C) 2016 Daniel Neus, Rohde & Schwarz Cybersecurity
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_DLIES) && defined(BOTAN_HAS_DIFFIE_HELLMAN)
#include "test_pubkey.h"
#include <botan/dlies.h>
#include <botan/dh.h>
#include <botan/pubkey.h>
#endif
namespace Botan_Tests {
namespace {
#if defined(BOTAN_HAS_DLIES) && defined(BOTAN_HAS_DIFFIE_HELLMAN)
class DLIES_KAT_Tests : public Text_Based_Test
{
public:
DLIES_KAT_Tests()
: Text_Based_Test(
"pubkey/dlies.vec",
"Kdf,Mac,MacKeyLen,IV,Group,X1,X2,Msg,Ciphertext") {}
Test::Result run_one_test(const std::string& cipher_algo, const VarMap& vars) override
{
const Botan::BigInt x1 = get_req_bn(vars, "X1");
const Botan::BigInt x2 = get_req_bn(vars, "X2");
const std::vector<uint8_t> input = get_req_bin(vars, "Msg");
const std::vector<uint8_t> expected = get_req_bin(vars, "Ciphertext");
const std::string kdf_algo = get_req_str(vars, "Kdf");
const std::string mac_algo = get_req_str(vars, "Mac");
const size_t mac_key_len = get_req_sz(vars, "MacKeyLen");
const std::string group_name = get_req_str(vars, "Group");
const std::vector<uint8_t> iv = get_opt_bin(vars, "IV");
Test::Result result("DLIES " + cipher_algo);
std::unique_ptr<Botan::KDF> kdf(Botan::KDF::create(kdf_algo));
if(!kdf)
{
result.test_note("Skipping due to missing KDF: " + kdf_algo);
return result;
}
std::unique_ptr<Botan::MAC> mac(Botan::MAC::create(mac_algo));
if(!mac)
{
result.test_note("Skipping due to missing MAC: " + mac_algo);
return result;
}
std::unique_ptr<Botan::Cipher_Mode> enc;
std::unique_ptr<Botan::Cipher_Mode> dec;
size_t cipher_key_len = 0;
if(cipher_algo != "XOR")
{
enc.reset(Botan::get_cipher_mode(cipher_algo, Botan::ENCRYPTION));
dec.reset(Botan::get_cipher_mode(cipher_algo, Botan::DECRYPTION));
cipher_key_len = enc->key_spec().maximum_keylength();
}
Botan::DL_Group domain(group_name);
Botan::DH_PrivateKey from(Test::rng(), domain, x1);
Botan::DH_PrivateKey to(Test::rng(), domain, x2);
Botan::DLIES_Encryptor encryptor(from, Test::rng(), kdf->clone(), enc.release(), cipher_key_len, mac->clone(),
mac_key_len);
Botan::DLIES_Decryptor decryptor(to, Test::rng(), kdf.release(), dec.release(), cipher_key_len, mac.release(),
mac_key_len);
if(!iv.empty())
{
encryptor.set_initialization_vector(iv);
decryptor.set_initialization_vector(iv);
}
encryptor.set_other_key(to.public_value());
result.test_eq("encryption", encryptor.encrypt(input, Test::rng()), expected);
result.test_eq("decryption", decryptor.decrypt(expected), input);
check_invalid_ciphertexts(result, decryptor, input, expected);
return result;
}
};
BOTAN_REGISTER_TEST("dlies", DLIES_KAT_Tests);
Test::Result test_xor()
{
Test::Result result("DLIES XOR");
std::vector<std::string> kdfs = { "KDF2(SHA-512)", "KDF1-18033(SHA-512)" };
std::vector<std::string> macs = { "HMAC(SHA-512)", "CMAC(AES-128)" };
const size_t mac_key_len = 16;
std::unique_ptr<Botan::KDF> kdf;
std::unique_ptr<Botan::MAC> mac;
Botan::DH_PrivateKey alice(Test::rng(), Botan::DL_Group("modp/ietf/2048"));
Botan::DH_PrivateKey bob(Test::rng(), Botan::DL_Group("modp/ietf/2048"));
for(const auto& kfunc : kdfs)
{
kdf = Botan::KDF::create(kfunc);
if(!kdf)
{
result.test_note("Skipping due to missing KDF: " + kfunc);
continue;
}
for(const auto& mfunc : macs)
{
mac = Botan::MAC::create(mfunc);
if(!mac)
{
result.test_note("Skipping due to missing MAC: " + mfunc);
continue;
}
Botan::DLIES_Encryptor encryptor(alice, Test::rng(), kdf->clone(), mac->clone(), mac_key_len);
// negative test: other pub key not set
Botan::secure_vector<uint8_t> plaintext = Test::rng().random_vec(32);
result.test_throws("encrypt not possible without setting other public key", [&encryptor, &plaintext]()
{
encryptor.encrypt(plaintext, Test::rng());
});
encryptor.set_other_key(bob.public_value());
std::vector<uint8_t> ciphertext = encryptor.encrypt(plaintext, Test::rng());
Botan::DLIES_Decryptor decryptor(bob, Test::rng(), kdf->clone(), mac->clone(), mac_key_len);
// negative test: ciphertext too short
result.test_throws("ciphertext too short", [ &decryptor ]()
{
decryptor.decrypt(std::vector<uint8_t>(2));
});
result.test_eq("decryption", decryptor.decrypt(ciphertext), plaintext);
check_invalid_ciphertexts(result, decryptor, unlock(plaintext), ciphertext);
}
}
return result;
}
class DLIES_Unit_Tests : public Test
{
public:
std::vector<Test::Result> run() override
{
std::vector<Test::Result> results;
std::vector<std::function<Test::Result()>> fns =
{
test_xor
};
for(size_t i = 0; i != fns.size(); ++i)
{
try
{
results.push_back(fns[ i ]());
}
catch(std::exception& e)
{
results.push_back(Test::Result::Failure("DLIES unit tests " + std::to_string(i), e.what()));
}
}
return results;
}
};
BOTAN_REGISTER_TEST("dlies_unit", DLIES_Unit_Tests);
#endif
}
}
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