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I lost my OpenBSD full-disk encryption password
The other day I set up a new OpenBSD instance with a nice RAID array, encrypted with Full Disk Encryption. And promptly proceeded to forget part of the passphrase.
New
The latest blog posts to take off on Hacker News. 2,307 posts.
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Plan9 from?
I have been saying for years that I am seeing the same phenomonon today that I saw thirty years ago when the microprocessor was first invented. At that time I argued a lot with all the computer scientists. They insisted that microprocessors were not really computers because they did not run the same software that…
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NSA Hacked French President’s House
“Keith Alexander (Director of the NSA) told me he was disappointed because he never thought we would detect them and he even added: You guys are good.” Bernard Barbier French newspaper …
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The math of CSS locks
CSS Locks are a Responsive Web Design technique that lets you transition smoothly between two property values when the screen gets smaller or bigger.
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'Dirty Jobs' Mike Rowe Meets the Koch Brothers
If you haven't seen it, my name appeared a few weeks ago in a headline next to Koch Industries
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Running a Tor Exit Node for Fun and E-mails
The Tor Project is a non-profit organization in the United States that created Tor, The Onion Router, a free software that creates an open network of volunteers which helps people anonymize their traffic by routing it through three or more other computers before it reaches its final destination.
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GPU Ray Tracing the Wrong Way
If you’re familiar with my blog, you know I’ve lately taken a fancy to doing abominable things to my Intel GPU’s OpenGL driver.
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New Edition of “Programming in Haskell” Now Available
An extensively updated and expanded version of the best-selling first edition. Now covers recent and more advanced features of Haskell.
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500 Byte Images: The Haiku Vector Icon Format
Haiku uses a custom vector image format to store icons. This is surprising both because most OSes consider bitmaps to be totally sufficient to represent icons and because there are plenty of vector graphics formats out this (e.g. SVG). The goal of the Haiku Vector Icon Format (HVIF) is to make vector icon files as…
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Think Before You Parallelize: A tour of parallel abstractions
In 2005 Intel release the Pentium D, which began the era of multi-core desktop CPUs. Today, even our phones have multiple cores. Making useof all of those c...
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Introduction to Mean Shift Algorithm
Its been quite some time since I wrote a Data Mining post . Today, I intend to post on Mean Shift – a really cool but not very well known algorithm. The basic idea is quite simple but the results a…
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WoSign's secret purchase of StartCom: WoSign threatened legal actions
This website is for sale! percya.com is your first and best source for information about percya. Here you will also find topics relating to issues of general interest. We hope you find what you are looking for!
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A Rocket to Nowhere (2005)
The Space Shuttle Discovery is up in orbit, safely docked to the International Space Station, and for the next five days, astronauts will be busy figuring out whether it's safe for them to come home. In the meantime, the rest of the Shuttle fleet is grounded (confined to base, not allowed to play with its spacecraft…
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Robin Hood Hashing should be the default hash table implementation (2013)
There’s a neat variation on open-addressing based hash tables called Robin Hood hashing . This technique isn’t very well-known, but it makes a huge practical difference because it both improves performance and space utilization compared to other “standard” hash tables (e.g. chaining ). It also eliminates the major…
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On Two Views of Computation in Computer Science
Abstract: Machine and language models of computation differ so greatly in the computational complexity properties of their representation that they form two distinct classes that cannot be directly…
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The Dropbox hack is real
Earlier today, Motherboard reported on what had been rumoured for some time, namely that Dropbox had been hacked [http://motherboard.vice.com/read/hackers-stole-over-60-million-dropbox-accounts] . Not just a little bit hacked and not in that "someone has cobbled together a list of credentials that work
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Google's login page accepts a vulnerable GET parameter
In hope that public disclosure will encourage Google to fix this, despite refusing to, here goes...