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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>
#endif
#if defined(BOTAN_HAS_EME_PKCS1)
#include <botan/eme_pkcs.h>
#endif
namespace Botan_Tests {
#if defined(BOTAN_HAS_EME_PKCS1)
class EME_PKCS1v15_Decoding_Tests final : public Text_Based_Test
{
public:
EME_PKCS1v15_Decoding_Tests()
: Text_Based_Test(
"pk_pad_eme/pkcs1.vec",
"RawCiphertext",
"Plaintext") {}
Test::Result run_one_test(const std::string& hdr, const VarMap& vars) override
{
const bool is_valid = (hdr == "valid");
Test::Result result("PKCSv15 Decoding");
Botan::EME_PKCS1v15 pkcs;
const std::vector<uint8_t> ciphertext = vars.get_req_bin("RawCiphertext");
const std::vector<uint8_t> plaintext = vars.get_opt_bin("Plaintext");
if(is_valid == false)
{
result.test_eq("Plaintext value should be empty for invalid EME inputs", plaintext.size(), 0);
}
uint8_t valid_mask = 0;
Botan::secure_vector<uint8_t> decoded =
pkcs.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(valid_mask == 0xFF)
{
result.test_eq("EME decoded plaintext correct", decoded, plaintext);
}
else
{
bool all_zeros = true;
for(size_t i = 0; i != decoded.size(); ++i)
if(decoded[i] != 0)
all_zeros = false;
result.confirm("On invalid padding output is all zero", all_zeros);
}
// TODO: also test that encoding is accepted
return result;
}
};
BOTAN_REGISTER_TEST("eme_pkcs1v15", EME_PKCS1v15_Decoding_Tests);
class EMSA_unit_tests final : public Test
{
public:
std::vector<Test::Result> run() override
{
Test::Result name_tests("EMSA_name_tests");
std::vector<std::string> pads_need_hash =
{
#if BOTAN_HAS_EMSA1
"EMSA1",
#endif
#if BOTAN_HAS_EMSA_X931
"EMSA2",
#endif
#if BOTAN_HAS_EMSA_PKCS1
"EMSA3",
#endif
#if BOTAN_HAS_EMSA_PSSR
"EMSA4",
"PSSR_Raw",
#endif
#if BOTAN_HAS_ISO_9796
"ISO_9796_DS2",
"ISO_9796_DS3",
#endif
};
std::vector<std::string> pads_no_hash =
{
#if BOTAN_HAS_EMSA_RAW
"Raw",
#endif
#if BOTAN_HAS_EMSA_PKCS1
"EMSA3(Raw)",
"EMSA3(Raw,SHA-512)",
#endif
};
for(auto pad : pads_need_hash)
{
try
{
const std::string hash_to_use = Botan::hash_for_emsa(pad);
std::unique_ptr<Botan::EMSA> emsa_1(
Botan::get_emsa(pad + "(" + hash_to_use + ")"));
std::unique_ptr<Botan::EMSA> emsa_2(Botan::get_emsa(emsa_1->name()));
name_tests.test_eq("EMSA_name_test for " + pad,
emsa_1->name(), emsa_2->name());
}
catch(Botan::Lookup_Error&)
{
name_tests.test_note("Skipping test due to missing hash");
}
catch(const std::exception& e)
{
name_tests.test_failure("EMSA_name_test for " + pad + ": " + e.what());
}
}
for(auto pad : pads_need_hash)
{
std::string algo_name = pad + "(YYZ)";
try
{
std::unique_ptr<Botan::EMSA> emsa(
Botan::get_emsa(algo_name));
name_tests.test_failure("EMSA_name_test for " + pad + ": " +
"Could create EMSA with fantasy hash YYZ");
}
catch(Botan::Lookup_Error&)
{
name_tests.test_note("Skipping test due to missing hash");
}
catch(const std::exception& e)
{
name_tests.test_eq("EMSA_name_test for " + pad,
e.what(),
"Could not find any algorithm named \"" + algo_name + "\"");
}
}
for(auto pad : pads_no_hash)
{
try
{
std::unique_ptr<Botan::EMSA> emsa_1(Botan::get_emsa(pad));
std::unique_ptr<Botan::EMSA> emsa_2(Botan::get_emsa(emsa_1->name()));
name_tests.test_eq("EMSA_name_test for " + pad,
emsa_1->name(), emsa_2->name());
}
catch(Botan::Lookup_Error&)
{
name_tests.test_note("Skipping test due to missing hash");
}
catch(const std::exception& e)
{
name_tests.test_failure("EMSA_name_test for " + pad + ": " + e.what());
}
}
return { name_tests };
}
};
BOTAN_REGISTER_TEST("pk_pad_emsa_unit", EMSA_unit_tests);
#endif
}
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