Lane Rettig lrettig

A description of known problems in Satoshi Nakamoto's paper, "Bitcoin: A Peer-to-Peer Electronic Cash System", as well as notes on terminology changes and how Bitcoin's implementation differs from that described in the paper.

Abstract

The longest chain not only serves as proof of the sequence of events witnessed, but proof that it came from the largest pool of CPU power.

Most VPN Services are Terrible

Short version: I strongly do not recommend using any of these providers. You are, of course, free to use whatever you like. My TL;DR advice: Roll your own and use Algo or Streisand. For messaging & voice, use Signal. For increased anonymity, use Tor for desktop (though recognize that doing so may actually put you at greater risk), and Onion Browser for mobile.

This mini-rant came on the heels of an interesting twitter discussion: https://twitter.com/kennwhite/status/591074055018582016

Exporting (iCloud) Keychain and Safari credentials to a CSV file

Update (October 2021)

Exporting password + one-time code data from iCloud Keychain is now officially supported in macOS Monterey and Safari 15 (for Monterey, Big Sur, and Catalina). You can access it in the Password Manager’s “gear” icon (System Preferences > Passwords on Monterey, and Safari > Passwords everywhere else), or via the File > Export > Passwords... menu item). You shouldn't need to hack up your own exporter anymore.

Original, Obsolete Content (2014)

After my dad died, I wanted to be able to have access any of his online accounts going forward. My dad was a Safari user and used iCloud Keychain to sync his credentials across his devices. I don’t want to have to keep an OS X user account around just to access his accounts, so I wanted to export his credentials to a portable file.

Multiple SSH Keys settings for different github account

create different public key

create different ssh key according the article Mac Set-Up Git

$ ssh-keygen -t rsa -C "your_email@youremail.com"

	const AWS = require('aws-sdk');
	const CognitoUserPool = require('amazon-cognito-identity-js-node').CognitoUserPool;
	const CognitoUserSession = require('amazon-cognito-identity-js-node').CognitoUserSession;
	const CognitoUser = require('amazon-cognito-identity-js-node').CognitoUser;
	const CognitoIdToken = require('amazon-cognito-identity-js-node').CognitoIdToken;
	const CognitoAccessToken = require('amazon-cognito-identity-js-node').CognitoAccessToken;
	const CognitoRefreshToken = require('amazon-cognito-identity-js-node').CognitoRefreshToken;

	const cfg = require('config').config;
	const COGNITO_IDENTITY_POOL_ID = cfg.COGNITO_IDENTITY_POOL_ID;

	class ParentComponent extends Component {
	constructor() {
	super();

	this.state = {
	data : [
	{id : 1, date : "2014-04-18", total : 121.0, status : "Shipped", name : "A", points: 5, percent : 50},
	{id : 2, date : "2014-04-21", total : 121.0, status : "Not Shipped", name : "B", points: 10, percent: 60},
	{id : 3, date : "2014-08-09", total : 121.0, status : "Not Shipped", name : "C", points: 15, percent: 70},
	{id : 4, date : "2014-04-24", total : 121.0, status : "Shipped", name : "D", points: 20, percent : 80},

	# Install QEMU OSX port with ARM support
	sudo port install qemu +target_arm
	export QEMU=$(which qemu-system-arm)

	# Dowload kernel and export location
	curl -OL \
	https://github.com/dhruvvyas90/qemu-rpi-kernel/blob/master/kernel-qemu-4.1.7-jessie
	export RPI_KERNEL=./kernel-qemu-4.1.7-jessie

	# Download filesystem and export location

	//
	// ViewController.m
	// AVPlayerCaching
	//
	// Created by Anurag Mishra on 5/19/14.
	// Sample code to demonstrate how to cache a remote audio file while streaming it with AVPlayer
	//

	#import "ViewController.h"
	#import <AVFoundation/AVFoundation.h>

	require 'action_dispatch/middleware/static'

	module Middleware
	class FileHandler < ActionDispatch::FileHandler
	def initialize(root, assets_path, cache_control)
	@assets_path = assets_path.chomp('/') + '/'
	super(root, cache_control)
	end

	def match?(path)

	#!/bin/bash -x
	find . -name 'fbjs' -print \| grep "\./node_modules/fbjs" -v \| xargs rm -rf