So today I thought I would be neat to show how to quickly create QR codes using Google’s Chart Tools . Google gives us a extremely easy way to create QR code by sending GET data request via URL: https://chart.googleapis.com/chart?cht=qr&chs=300x300&chl=nessy That is nice and easy, but I figured I would wrap this up in a small Python script just because: #!/usr/bin/env python from urllib2 import quote, urlopen, Request from poster.encode import multipart_encode from poster.

Since my last post showed how to check a salted password, I figured this time we can look over some example code for brute forcing a salted password. Of course this is just proof of concept and should not be used on any password you do not have access to. The code I tossed together is using a bit of some examples I found online, and is no where near optimized for speed, but as I will show it will work.

Well today I spent a bit of time looking up how /etc/shadow created their shadow passwords. I found a good source for the method at http://www.akkadia.org/drepper/SHA-crypt.txt , and if you take some time to review it you will notice the steps are a bit involved Lucky for us Python has a Crypt module that works nicely. First off I started by creating a dummy user with the password of test on one of my Linux computers:

After a bit of thinking I believe I have a better way to create all possible ASCII pass phrases, rather than create a recursive function that calls itself as I did in the previous post. This method takes a slightly different approach, but I believe it to return the same results. First off let’s create a list of all lower case ASCII character numbers: >>> chars = range(97, 123) >>> chars [97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122] >>> map(chr, chars) ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'] Next we can set our max word width and current word width variables:

So in my last article I talked a little bit about using libvirt to start and stop QEMU domains. In this article I would like to go over how domains are created. QEMU uses XML files for each domain configuration, and using libvirt we can access that data. First off lets connect to our local running QEMU instance: >>> import libvirt >>> conn = libvirt.open('qemu:///system') Next lets look for and link to a running domain:

Lately I’ve been using Jenkins as a central hub for automated task across multiple machines, think a central cron system with a slick web interface. In a nutshell Jenkins CI is the leading open-source continuous integration server. Built with Java, it provides over 400 plugins to support building and testing virtually any project. One thing that is very nice about Jenkins is the easy to use REST JSON API .

So I was doing a bit of research on a Diablo III API, and stumbled across this article: http://us.battle.net/d3/en/forum/topic/4877377752 It seems they are still in the early stages, but there is a Character Calculator API, and it is in JSON. First off we need to load in our Python libraries: >>> from urllib2 import urlopen >>> from json import loads We can make our request using common URL methods: >>> res = urlopen('http://us.

Binary Binary is nothing more than a base 2 numbering system using the numbers 0 and 1. Bit A Bit is merely a single number of either 1 and 0 within the binary. Byte A Byte consists of 8 bits. A byte containing all 0s will be the integer 0, while a byte containing all 1s will be the integer of 255. Nibble A Nibble consits of 4 bits. A nibble containing all 0s will be the iteger 0, while a nibble containing all 1s will be the integer 15 (very useful for hex numbers).

Today I decide to toy around with a KVM server we have running in house for testing. I started by using the libvirt Documentation, but it was very limited and I had to do some trial and error. I will go over a few basic things I learned using the libvirt Python module: Normally we us virt-manager to connect to our KVM instances, and the authentication is tunnled over SSH (using SSH Keys) and QEMU .

The other day I was playing with some Python challenges found on a popular sites, this challenge worked with xy coordinates on a 2D plane. I wanted to show some of the code I wrote and how they work. The Plane Being the data is a tuple of x, y coordinates we will use the Cartesian Coordinate System . I started my code off as a simple Python class: class Line(object): def init(self, data): self.