dahnielson

<?php
/**
 * UUID class
 *
 * The following class generates VALID RFC 4122 COMPLIANT
 * Universally Unique IDentifiers (UUID) version 3, 4 and 5.
 *
 * UUIDs generated validates using OSSP UUID Tool, and output
 * for named-based UUIDs are exactly the same. This is a pure
 * PHP implementation.

benjamincharity

HTML
=====
<script type='text/javascript'>
  window.jQuery || document.write('<script src="js/jquery-1.7.1.js">\x3C/script>')
</script>
<script src='http://cdnjs.cloudflare.com/ajax/libs/modernizr/2.0.6/modernizr.min.js' type='text/javascript'></script>
<script type='text/javascript'>
  window.Modernizr || document.write('<script src="js/modernizr-2.0.6.js">\x3C/script>')
</script>

gavinandresen

# Raw transaction API example work-through
# Send coins to a 2-of-3 multisig, then spend them.
#
# For this example, I'm using these three keypairs (public/private)
# 0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86 / 5JaTXbAUmfPYZFRwrYaALK48fN6sFJp4rHqq2QSXs8ucfpE4yQU
# 04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a986818a7cb624532f062c1d1f8722084861c5c3291ccffef4ec6874 / 5Jb7fCeh1Wtm4yBBg3q3XbT6B525i17kVhy3vMC9AqfR6FH2qGk
# 048d2455d2403e08708fc1f556002f1b6cd83f992d085097f9974ab08a28838f07896fbab08f39495e15fa6fad6edbfb1e754e35fa1c7844c41f322a1863d46213 / 5JFjmGo5Fww9p8gvx48qBYDJNAzR9pmH5S389axMtDyPT8ddqmw

# First: combine the three keys into a multisig address:
./bitcoind createmultisig 2 '["0491bba2510912a5bd37da1fb5b1673010e43d2c6d812c514e91bfa9f2eb129e1c183329db55bd868e209aac2fbc02cb33d98fe74bf23f0c235d6126b1d8334f86","04865c40293a680cb9c020e7b1e106d8c1916d3cef99aa431a56d253e69256dac09ef122b1a9

aaroncohen

# Written by Aaron Cohen -- 1/14/2013
# Brought to you by BitTorrent, Inc.
# "We're not just two guys in a basement in Sweden." TM
#
# This work is licensed under a Creative Commons Attribution 3.0 Unported License.
# See: http://creativecommons.org/licenses/by/3.0/

import sys
import re
import socket

dooglus

// g++ UniversalTimer.o BinaryData.o FileDataPtr.o BtcUtils.o BlockObj.o BlockUtils.o libcryptopp.a -o bootstrap.out -Icryptopp -DUSE_CRYPTOPP -D__STDC_LIMIT_MACROS -lpthread bootstrap.cpp

#include "BlockUtils.h"

int main(void)
{
	string btcdir("/home/chris/.bitcoin");
	string bootstrap(btcdir + "/" + "bootstrap.dat");
	BlockDataManager_FileRefs::GetInstance().SelectNetwork("Main");
	BlockDataManager_FileRefs & bdm = BlockDataManager_FileRefs::GetInstance(); 

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

karlgluck

What's this all about?

Digital cryptography! This is a subject I've been interested in since taking a class with Prof. Fred Schneider back in college. Articles pop up on Hacker News fairly often that pique my interest and this technique is the result of one of them.

Specifically, this is about Lamport signatures. There are many signature algorithms (ECDSA and RSA are the most commonly used) but Lamport signatures are unique because they are formed using a hash function. Many cryptographers believe that this makes them resistant to attacks made possible by quantum computers.

How does a Lamport Signature work?

chadsmith

(function() {
  var FaviconAwesome = function(icon, color, bg) {
    'use strict';
    var
      container = document.createElement('div'),
      span = document.createElement('span'),
      body = document.body,
      content,
      canvas = document.createElement('canvas'),
      getContext = function(w) {

achillean

ethack

It "types" the contents of the clipboard.

Why can't you just paste the contents you ask? Sometimes pasting just doesn't work.

• One example is in system password fields on OSX.
• Sometimes you're working in a VM and the clipboard isn't shared.
• Other times you're working via Remote Desktop and again, the clipboard doesn't work in password boxes such as the system login prompts.
• Connected via RDP and clipboard sharing is disabled and so is mounting of local drives. If the system doesn't have internet access there's no easy way to get things like payloads or Powershell scripts onto it... until now.

Windows

The Windows version is written in AutoHotKey and easily compiles to an executable. It's a single line script that maps Ctrl-Shift-V to type the clipboard.