MarekKnapek

#include <string.h>

#define crash(x) do{ if(!(x)){ __debugbreak(); int volatile* volatile ptr; ptr = 0; *ptr = 0; } }while(false)
#define min(a, b) (((b) < (a)) ? (b) : (a))

void test_1(unsigned char const* const data, size_t const size) noexcept
{
	uint8_t state[256];
	struct bcomp_state state_out;
	uint16_t bcomp_bits;

MarekKnapek

• Download oldver verison of my tool from GitHub actions artifacts. https://github.com/MarekKnapek/mk_clib/suites/18431986431/artifacts/1068471379
• Download newer version of my tool from https://github.com/MarekKnapek/mk_clib/suites/18473732200/artifacts/1071599132
• Find some large file on your hard disk (>1GB) or create new one.
  • You can use the dd tool for Windows from http://www.chrysocome.net/dd to create new file.
  • dd bs=1M count=1k if=/dev/random of=plaintext.bin --progress
• Encrypt the file with the Serpent cipher using the CTR mode and measure how long it took.
  • I'm using the unix time utility from https://github.com/skeeto/w64devkit
  • Command to encrypt:
  • c:\path\to\w64devkit64\bin\time.exe .\mkcc-release-x64.exe /direction encrypt /alg serpent /padding pkcs7 /mode ctr /kdf pbkdf2_sha2_512_256 /password Hunter2 /salt cryptor /cost 1000 /input plaintext.bin /output ciphertext.bin
• Repeat the measurement with newver version of my tool. This version is able to detect an

MarekKnapek

#define mk_lang_jumbo_want 1
/* You need my library from https://github.com/marekKnapek/mk_clib for this. */
#include "mk_sl_uint32.h"
#include "mk_lang_div_roundup.h"

#define mk_sl_cui_t_name big_fib
#define mk_sl_cui_t_base mk_sl_cui_uint32
#define mk_sl_cui_t_count mk_lang_div_roundup(346, 32)
#include "mk_sl_cui_inl_fileh.h"
#include "mk_sl_cui_inl_filec.h"

MarekKnapek

/* you need my library from */
/* https://github.com/MarekKnapek/mk_clib */
/* https://www.reddit.com/r/C_Programming/comments/17qgg6u/storing_extremely_large_numbers_in_c/ */


#define mk_lang_jumbo_want 1

#include "mk_lang_charbit.h"
#include "mk_lang_sizeof.h"

MarekKnapek

#include "mk_lib_crypto_hash_stream_blake3.h"

#include <array> /* std::array */
#include <string_view> /* std::string_view */


constexpr auto blake3_constexpr(std::string_view const& str_a, char const& char_a, std::string_view const& str_b, char const& char_b)
{
	mk_lib_crypto_hash_stream_blake3_t hash{};
	std::size_t i{};

MarekKnapek

#define WANT_CONST 1


#include <cstdio>


class my_type
{
public:
	my_type() noexcept;

MarekKnapek

// ========== ==========
// library begin
// ========== ==========


#include <algorithm> // min
#include <array> // array
#include <cassert> // assert
#include <cstdint> // uint64_t, uint32_t, uint16_t, uint8_t, uintptr_t
#include <cstdlib> // abort

MarekKnapek

"Windows 7 64bit (amd64), version 6.1.7601."
"apisetschema.dll version 6.1.7601.24499."

"MS-Win-Core-Console-L1-1-0","","kernel32.dll"
"MS-Win-Core-DateTime-L1-1-0","","kernel32.dll"
"MS-Win-Core-Debug-L1-1-0","","kernelbase.dll"
"MS-Win-Core-DelayLoad-L1-1-0","","kernel32.dll"
"MS-Win-Core-ErrorHandling-L1-1-0","","kernel32.dll"
"MS-Win-Core-ErrorHandling-L1-1-0","kernel32.dll","kernelbase.dll"
"MS-Win-Core-Fibers-L1-1-0","","kernelbase.dll"