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/*
* (C) 2014,2015,2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_STREAM_CIPHER)
#include <botan/stream_cipher.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_STREAM_CIPHER)
class Stream_Cipher_Tests final : public Text_Based_Test
{
public:
Stream_Cipher_Tests(): Text_Based_Test("stream", "Key,Out", "In,Nonce,Seek") {}
Test::Result run_one_test(const std::string& algo, const VarMap& vars) override
{
const std::vector<uint8_t> key = get_req_bin(vars, "Key");
const std::vector<uint8_t> expected = get_req_bin(vars, "Out");
const std::vector<uint8_t> nonce = get_opt_bin(vars, "Nonce");
const size_t seek = get_opt_sz(vars, "Seek", 0);
std::vector<uint8_t> input = get_opt_bin(vars, "In");
if(input.empty())
{
input.resize(expected.size());
}
Test::Result result(algo);
const std::vector<std::string> providers =
provider_filter(Botan::StreamCipher::providers(algo));
if(providers.empty())
{
result.note_missing("block cipher " + algo);
return result;
}
for(auto const& provider_ask : providers)
{
std::unique_ptr<Botan::StreamCipher> cipher(Botan::StreamCipher::create(algo, provider_ask));
if(!cipher)
{
result.test_failure("Stream " + algo + " supported by " + provider_ask + " but not found");
continue;
}
const std::string provider(cipher->provider());
result.test_is_nonempty("provider", provider);
result.test_eq(provider, cipher->name(), algo);
try
{
std::vector<uint8_t> buf(128);
cipher->cipher1(buf.data(), buf.size());
result.test_failure("Was able to encrypt without a key being set");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to encrypt with no key set fails");
}
try
{
cipher->seek(0);
result.test_failure("Was able to seek without a key being set");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to seek with no key set fails");
}
catch(Botan::Not_Implemented&)
{
result.test_success("Trying to seek failed because not implemented");
}
cipher->set_key(key);
/*
Test invalid nonce sizes. this assumes no implemented cipher supports a nonce of 65000
*/
const size_t large_nonce_size = 65000;
result.confirm("Stream cipher does not support very large nonce", cipher->valid_iv_length(large_nonce_size) == false);
result.test_throws("Throws if invalid nonce size given",
[&]() { cipher->set_iv(nullptr, large_nonce_size); });
if(nonce.size())
{
if(!cipher->valid_iv_length(nonce.size()))
{
throw Test_Error("Invalid nonce for " + algo);
}
cipher->set_iv(nonce.data(), nonce.size());
}
else
{
/*
* If no nonce was set then implicitly the cipher is using a
* null/empty nonce. Call set_iv with such a nonce to make sure
* set_iv accepts it.
*/
if(!cipher->valid_iv_length(0))
{
throw Test_Error("Stream cipher " + algo + " requires nonce but none provided");
}
cipher->set_iv(nullptr, 0);
}
if(seek != 0)
{
cipher->seek(seek);
}
// Test that clone works and does not affect parent object
std::unique_ptr<Botan::StreamCipher> clone(cipher->clone());
result.confirm("Clone has different pointer", cipher.get() != clone.get());
result.test_eq("Clone has same name", cipher->name(), clone->name());
clone->set_key(Test::rng().random_vec(cipher->maximum_keylength()));
{
std::vector<uint8_t> buf = input;
cipher->encrypt(buf);
result.test_eq(provider, "encrypt", buf, expected);
}
cipher->clear();
try
{
std::vector<uint8_t> buf(128);
cipher->cipher1(buf.data(), buf.size());
result.test_failure("Was able to encrypt without a key being set (after clear)");
}
catch(Botan::Invalid_State&)
{
result.test_success("Trying to encrypt with no key set (after clear) fails");
}
}
return result;
}
};
BOTAN_REGISTER_TEST("stream", Stream_Cipher_Tests);
#endif
}
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