Made by Mikal – Page 136

DES examples

Post author:mikal
Post published:March 25, 2002
Post category:Des

This page contains some DES example code I wrote in reaction to a crypto tutorial I attended a while ago. I finally got around to putting the code online... The basic point of the code is it shows you how to use the DES calls within openssl. It also shows how the electronic code book for of DES is a bad choice for vaguely predictable data such as images. A visual demonstration of this is these two images. The one on the right is an encrypted version of the one on the left... The vertical flip of the image is because of the way libtiff reads colour images, and to be honest isn't worth fixing for this example.

Graphics programming with libtiff: black and white

Post author:mikal
Post published:March 1, 2002
Post category:Article

My first online article, an introduction to programming with libtiff for IBM DeveloperWorks. [tags: libtiff tiff graphics]

My AOSS III Talk

Post author:mikal
Post published:June 17, 2001
Post category:Pngtools

The slides for my Australian Open Source Symposium talk are now available online. This talk covers Panda, PandaLex, PandaScript, PNGTools, and stuff like that. A historical note from November 2020: these presentations are no longer useful due to their age and are no longer online due to hosting changes.

Initial public release

Post author:mikal
Post published:April 12, 2001
Post category:Pngtools

In line with the maxim "release early, release often", here is the initial public viewing of my work on pngtools. At the moment, the only command that is implemented is pnginfo, which is pretty much there (apart from the command line options, which are rarely used). I would welcome comments on the code, which can be sent to mikal@stillhq.com. The code is (c) Michael Still 2001, and is released under the GNU GPL version 2. Source A historical note from November 2020: this code is quite old, but still actively used. I have therefore converted the old subversion repository to git and it is hosted at https://github.com/mikalstill/pngtools. I will monitor there for issues and patches and try my best to remember what I was thinking 20 years ago...