test/header.cpp

#include <doctest/doctest.h>
#include <openssl/crypto.h>
#include <openssl/err.h>

#include <header.h>

#include "common.h"

#include <map>       // for map
#include <stdexcept> // for invalid_argument

using namespace sframe;

TEST_CASE("Header Known-Answer")
{
  struct KnownAnswerTest
  {
    uint64_t key_id;
    uint64_t counter;
    bytes encoding;
  };

  const auto cases = std::vector<KnownAnswerTest>{
    { 0, 0, from_hex("00") },
    { 0, 7, from_hex("07") },
    { 7, 0, from_hex("70") },
    { 7, 7, from_hex("77") },
    { 0, 8, from_hex("0808") },
    { 8, 0, from_hex("8008") },
    { 8, 8, from_hex("880808") },
    { 0xffffffffffffffff, 0, from_hex("f0ffffffffffffffff") },
    { 0, 0xffffffffffffffff, from_hex("0fffffffffffffffff") },
    { 0xffffffffffffffff,
      0xffffffffffffffff,
      from_hex("ffffffffffffffffffffffffffffffffff") },
  };

  for (const auto& tc : cases) {
    // Decode
    const auto decoded = Header::parse(tc.encoding);
    REQUIRE(decoded.key_id == tc.key_id);
    REQUIRE(decoded.counter == tc.counter);
    REQUIRE(decoded.size() == tc.encoding.size());

    // Encode
    const auto to_encode = Header{ tc.key_id, tc.counter };
    const auto encoded = to_bytes(to_encode.encoded());
    REQUIRE(encoded == tc.encoding);
  }
}