Skip to content

Instantly share code, notes, and snippets.

Avatar

Scott Tamosunas scotttam

View GitHub Profile
@scotttam
scotttam / Decrypter.java
Created Mar 17, 2011
encrypt and decrypt with PBKDF2/SHA1 and AES
View Decrypter.java
import javax.crypto.Cipher;
import java.security.spec.KeySpec;
import javax.crypto.spec.PBEKeySpec;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import javax.crypto.SecretKeyFactory;
import java.security.AlgorithmParameters;
import javax.crypto.spec.IvParameterSpec;
public class Decrypter {
@scotttam
scotttam / pbkdf2_aes.js
Created Aug 16, 2011
Javascript example generating a PBKDF2 key and encrypting/decrypting using AES/256/CBC
View pbkdf2_aes.js
//Requires:
//JQuery
//slowAES (http://code.google.com/p/slowaes/)
//pbkdf2 (1.1) by Parvez Anandam (http://anandam.name/pbkdf2)
//sha1 (2.1a) by Paul Johnston (http://pajhome.org.uk/crypt/md5)
(function(window, document, $, undefined){
$(document).ready(function() {
var startTime = new Date();
@scotttam
scotttam / apns.py
Created Jan 30, 2012
Sends an Apple Push Notification with Python
View apns.py
import socket, ssl, json, struct
import binascii
# device token returned when the iPhone application
# registers to receive alerts
deviceToken = '39cac56f 986a0e66 3c4fd4f4 68df5598 024d2ca3 8b9f307c 741c180e 9fc30c62'
thePayLoad = {
'aps': {
'alert':'Oh no! Server\'s Down!',
@scotttam
scotttam / decrypt.rb
Created Mar 17, 2011
decrypt PBKDF2/SHA1 and AES
View decrypt.rb
require "base64"
require 'openssl'
require 'iconv'
CIPHER = "aes-256-cbc"
#http://www.ruby-doc.org/ruby-1.9/classes/OpenSSL/PKCS5.html
PASSPHRASE = "12345"
IV = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16].pack("c*")
@scotttam
scotttam / apns.rb
Created Jan 31, 2012
Sends an Apple Push Notification with Ruby
View apns.rb
require "rubygems"
require "yajl"
require "openssl"
require "socket"
device_token = '39cac56f 986a0e66 3c4fd4f4 68df5598 024d2ca3 8b9f307c 741c180e 9fc30c62'
device_token = device_token.gsub(" ", "")
the_byte_token = [device_token].pack("H*")
file = File.open("ruby_the_byte_token", "wb")
View aes_256_cbc.rb
#!/usr/bin/env ruby
# -*- coding: utf-8 -*-
require 'base64'
require 'digest'
require 'openssl'
def encode(cryptkey, iv, cleardata)
cipher = OpenSSL::Cipher.new('AES-256-CBC')
cipher.encrypt # set cipher to be encryption mode
View aes_256_cbc.js
#!/usr/bin/env node
var crypto = require('crypto');
function encode(cryptkey, iv, cleardata) {
var encipher = crypto.createCipheriv('aes-256-cbc', cryptkey, iv),
encoded = encipher.update(cleardata);
encoded = Buffer.concat([encoded, encipher.final()]);
return encoded;
@scotttam
scotttam / runtime.rb
Created Feb 17, 2012
Instrument bundler for gem load performance
View runtime.rb
def require(*groups)
gem_load_times = {}
groups.map! { |g| g.to_sym }
groups = [:default] if groups.empty?
@definition.dependencies.each do |dep|
# Skip the dependency if it is not in any of the requested
# groups
next unless ((dep.groups & groups).any? && dep.current_platform?)
@scotttam
scotttam / rev_split_num.rb
Created Feb 10, 2012
Reverse split a big number
View rev_split_num.rb
def log(what, str, offset=0)
len = str.length
puts sprintf("| %-25s | %30s | (%-2s) |", what, str << " "*offset, len)
puts "_____________________________________________________________________"
end
def doit(match, buffer_size)
sl = match.slice(-14, 14)
log "14 of first 16", sl, buffer_size
View apns_test.rb
require "base64"
require "openssl"
require "socket"
require "yajl" #gem install yajl-ruby
IDENTIFIER = 0
EXPIRY = 0
ENHANCED_COMMAND = 1
DEVICE_TOKEN_SIZE = 32
# DEVICE_TOKEN = Base64.decode64("4DJXVKUhziWwNihDfraFXXZ4RIJK+dCHoiS3awnh0w0=")