thalamus

/* 
 * This document is provided to the public domain under the 
 * terms of the Creative Commons CC0 public domain license
 */

How to boot Arch Linux ARM in QEMU (patched for M1)

Prerequisites:

QEMU - patched for M1 processors - patches: https://github.com/utmapp/qemu

deimi

1. apt install bbswitch

2. /etc/modprobe.d/bbswitch.conf
       options bbswitch load_state=0 unload_state=1

   To run bbswitch without bumblebeed on system startup, do not forget to add bbswitch to /etc/modules-load.d.

   nano /etc/modules-load.d
       bbswitch

vkobel

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/cred.h>
#include <linux/fs.h>

MODULE_LICENSE("GPL");

struct task_struct *get_task_struct_by_pid(unsigned pid)
{
    struct pid *proc_pid = find_vpid(pid);

vkobel

## /etc/udev/rules.d/21-yubikey.rules
ACTION=="remove", SUBSYSTEM=="input", ATTRS{idVendor}=="1050", ATTRS{idProduct}=="0407", RUN+="/usr/local/bin/lockscreen.sh"

chrisdone

output/

extremecoders-re

Setting up Qemu with a tap interface

There are two parts to networking within QEMU:

• The virtual network device that is provided to the guest (e.g. a PCI network card).
• The network backend that interacts with the emulated NIC (e.g. puts packets onto the host's network).

Example: User mode network

chrisdone

Common

export OPT=/opt
export BUILDS=/some/where/mini_linux
mkdir -p $BUILDS

Linux kernel

vkobel

import aiohttp
import asyncio

def async_http_get(urls, extractor=None, json_response=True):
    tasks = []
    sem = asyncio.Semaphore(32)

    async def fetch(session, url):
        async with session.get(url) as response:
            if json_response:

chris-belcher

The Problem

JoinMarket has a problem where it assumes different nicknames have different bitcoin wallets. This can be exploited by people running multiple yield generator bots from the same wallet, so they get a higher rate of profit at the expense of de-legitimizing the system for privacy.

Crypto primitive 1: Merkle Tree

A merkle tree is a way of producing a commitment to a set, which can later can prove that elements are contained within the set using only O(logN) data, and only revealing one other element in the set.

For example here is a merkle tree commiting to a set of numbers {6, 3, 9, 0, 8, 4, 7, 2}

heppu

Create bootable USB

dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx status=progress oflag=sync

Boot from USB and set prepare system

loadkeys <your-keymap>