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/*
* (C) 2016 Jack Lloyd
*
* Botan is released under the Simplified BSD License (see license.txt)
*/
#include "tests.h"
#if defined(BOTAN_HAS_PK_PADDING)
#include <botan/emsa.h>
#include <botan/eme.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_PK_PADDING)
class EME_Decoding_Tests final : public Text_Based_Test
{
public:
EME_Decoding_Tests()
: Text_Based_Test(
"pk_pad_eme",
"RawCiphertext,ValidInput",
"Plaintext") {}
Test::Result run_one_test(const std::string& algo, const VarMap& vars) override
{
Test::Result result(algo + " Decoding");
std::unique_ptr<Botan::EME> eme;
try
{
eme.reset(Botan::get_eme(algo));
}
catch(Botan::Lookup_Error&)
{
result.note_missing(algo);
return result;
}
const std::vector<uint8_t> ciphertext = get_req_bin(vars, "RawCiphertext");
const std::vector<uint8_t> plaintext = get_opt_bin(vars, "Plaintext");
const bool is_valid = get_req_bool(vars, "ValidInput");
if(is_valid == false)
{
result.test_eq("Plaintext value is empty for invalid EME inputs", plaintext.size(), 0);
}
uint8_t valid_mask = 0;
Botan::secure_vector<uint8_t> decoded =
eme->unpad(valid_mask, ciphertext.data(), ciphertext.size());
result.confirm("EME valid_mask has expected value", valid_mask == 0x00 || valid_mask == 0xFF);
result.test_eq("EME decoding valid/invalid matches", valid_mask == 0xFF, is_valid);
if(is_valid && valid_mask == 0xFF)
{
result.test_eq("EME decoded plaintext correct", decoded, plaintext);
}
// TODO: also test that encoding is accepted
return result;
}
};
BOTAN_REGISTER_TEST("pk_pad_eme", EME_Decoding_Tests);
#endif
}
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