randombit

#define OPENSSL_SUPPRESS_DEPRECATED
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/obj_mac.h>
#include <openssl/objects.h>
#include <stdio.h>
#include <vector>

void check_rc(const char* where, int rc, int expected_rc = 1) {
   if(rc != expected_rc) {

randombit

#include <botan/internal/simd_avx2.h>
#include <botan/internal/simd_avx2_gfni.h>
#include <immintrin.h>
#include <botan/hex.h>
#include <botan/system_rng.h>

namespace Botan {

SIMD_8x32 camellia_s1(SIMD_8x32 x) {
   constexpr uint64_t pre_a = gfni_matrix(R"(

randombit

// Demo of constexpr asm (gcc 15)

#include <stdlib.h>
#include <array>
#include <string>
#include <algorithm>

consteval std::string body_i(std::string_view x, size_t i) {
   std::string out;
   for(char c : x) {

randombit

#define OPENSSL_SUPPRESS_DEPRECATED
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <stdio.h>

void check_rc(const char* where, int rc, int expected_rc = 1) {
   if(rc != expected_rc) {
      printf("%s returned %d\n", where, rc);
      exit(1);
   }

randombit

def mods(ki, w):
    if ki >= (1 << (w-1)):
        return ki - (1 << w)
    else:
        return ki

def wnaf(k, w):
    assert(w >= 2)
    mask = (1 << w) - 1
    naf = []

randombit

[remote "origin"]
        url = [email protected]:randombit/foo.git
        fetch = +refs/heads/*:refs/remotes/origin/*
        fetch = +refs/pull/*/head:refs/remotes/origin/pr/*

randombit

/**
Minimization of https://github.com/randombit/botan/issues/3637
*/

#define CAUSE_CODEGEN_BUG

#include <stdint.h>
#include <stdlib.h>
#include <type_traits>
#include <cstring>

randombit

#include <argon2.h>
#include <stdint.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>

uint64_t timestamp()
   {
   struct timespec ts;
   if(::clock_gettime(CLOCK_MONOTONIC_RAW, &ts) == 0)

randombit

via https://twitter.com/mjos_crypto/status/1219610073816801286

Cloned https://github.com/daniel-thompson/pinebook-pro-debian-installer/
Inserted a 32GB sdcard into the built-in slot.
./install-debian
Installs the a system there, reboot from sdcard.
Clone again, now do: 
./install-debian CRYPT=y BLKDEV=/dev/mmcblk2
Answer questions, done!
Supafresh Debian with LUKS on PineBook Pro.

randombit

void apply_simple_seccomp_filter(const std::vector<std::string>& allowed_syscalls)
   {
   //scmp_filter_ctx seccomp_ctx = ::seccomp_init(SCMP_ACT_ERRNO(EPERM));
   scmp_filter_ctx seccomp_ctx = ::seccomp_init(SCMP_ACT_TRAP);
   if(seccomp_ctx == NULL)
      throw std::runtime_error("seccomp_init failed");

   for(std::string syscall : allowed_syscalls)
      {
      int syscall_num = ::seccomp_syscall_resolve_name(syscall.c_str());