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waisting some CPU time Oct. 23rd, 2015 @ 06:28 am
Given some people having rainbow tables I'm now waisting a lot of cpu time doing:
for i in 2046 3072 4096 6144 7680 8192 ; do 
  ssh-keygen -G moduli-$i.candidates -b $i 
  ssh-keygen -T moduli-$i -f moduli-$i.candidates 
mv /etc/ssh/moduli /etc/ssh/moduli-normal
cat moduli-[23478]* > /etc/ssh/moduli
systemctl restart ssh.service
This should give me brand-new primes, used only by me. So even if 'bad people' spend a lot of time and money hacking the 20 odd 2048-bit primes distributed with ssh, I would be ... higher on their target list? This entry was originally posted at http://pvaneynd.dreamwidth.org/153364.html. Please comment there using OpenID.

Apple and .be dealers Sep. 22nd, 2015 @ 08:20 am
Last week I took my iphone 5 out of the otterbox to clean it. Then I noticed that the battery decided to find more lebensraum and was pushing the glass upwards. I immediately shutdown the phone (risk of explosion or other nasty business).
Then I waited until this monday, and this because after-sales support from the local Apple dealers sucks. They normally need to send back the phone and you're often for weeks without a phone, uncertain what exactly will happen. Exactly why this sorry state exists is a bit of a mystery.
This Saturday the Apple shop in Brussels opened and yesterday I went to repair the phone. A quick 'Oh, that really shouldn't happen. We'll replace it' later and I've got a new, working iPhone 5.
Seeing the number of people coming into the shop on a Monday morning, I expect the local Apple dealers to ... suffer. This entry was originally posted at http://pvaneynd.dreamwidth.org/153264.html. Please comment there using OpenID.
Current Mood: happyhappy
Tags: ,

May. 26th, 2015 @ 06:46 am
So in the last few weeks I discovered a new hobby: Via Ferrata and actually managed to go to the sailing club with our son and spend an hour or two with a a dinghy to play.
My wife thinks that I'm having a mid-life crisis, my colleagues say that this doesn't have enough young women or horsepower to be a proper mid-life crisis. I just think that I'm enjoying my lower weight and increased possibilities. And having a lot of fun ;) This entry was originally posted at http://pvaneynd.dreamwidth.org/152897.html. Please comment there using OpenID.
Current Mood: happyhappy

Sailing happened Sep. 9th, 2014 @ 12:03 pm

So after our son took up sailing in the summer, I felt free to restart this hobby which I only interrupted temporary for ... 30 years.

We found a nice club which is not so close but cozy: WVD Mechelen and started a course on Saturday for adults. A beginners course as I forgot everything there is to know about sailing. We're with a few people on a Laser 16 and this is great fun.

To get there I thought of cycling. I maybe underestimated this, the distance is about 21 km (13 miles for the colonials) but the 'total climb' so height to overcome is 94 meters (308 ft) going, and 101 meters (331 ft) for the return trek.

My average speed sucked (16.7 km/h (10.3 miles/h) and 14.3 km/h (8.9 miles/hour)) and my legs are _still_ feeling without power. I hope this will improve after a bit of practice

However the path itself is one of the 'fietsknooppunten route' (Belgian invention so the link is in Dutch) so it's very nice, safe and calm. With impressive bridges to cross: SNC01728

This entry was originally posted at http://pvaneynd.dreamwidth.org/152576.html. Please comment there using OpenID.
Current Mood: happyhappy

Old versus new Apr. 7th, 2014 @ 08:08 am
For a side project at $WORK I need to plot some data.

In the past I used gnuplot but as I wanted to interactively investigate the data I wrote a GUI browser in Clojure. This was relatively easy and fast enough.

But I've been told that I'm not with the new hotness and that I should investigate doing this in the browser. So I found the pretty impressive dygraphs javascript library.

The plots look fantastic and are really what I need. So I make my first html5 like page and tried it.

At first I thought that something was wrong. If I do this plot with gnuplot I get:

$ time gnuplot plot.gnuplot

real	0m0.818s
user	0m0.608s
sys	0m0.209s

In Safari it took 22 minutes, while showing a beachball all the time, to plot this data. Chrome and Firefox do it quite a bit better at only two minutes, but still... not subsecond is it? Using the 'canvas' html5 terminal in gnuplot produces 14M html file which only takes something lik 20 seconds to get drawn in all browsers.

But I must admit that the default look and interactivity of dygraph is lightyears ahead of my gnuplot settings...

This entry was originally posted at http://pvaneynd.dreamwidth.org/152036.html. Please comment there using OpenID.
Other entries
» Vampires, I'm surrounded by vampires
So after working for a week in the Indian office with my (naturally) Indian colleagues I was finding the older 'all white American' motivational posters on the wall already jarring. The faces I see and value every day are not so pink ;). (it seems that this is going to get addressed soon)

In fact my only gut reaction on walking the street and the office was more of 'there are a lot of Indians here' (doh!). I seem to be pretty used to seeing Indians in the street in Antwerp, it's just the number which is surprising my unconscious mind.

The streets, and traffic chaos, remind me a lot of the more busy areas in Naples, I keep expecting to see a volcano on the horizon.

But a bigger shock for me was in store: Over the weekend I went shopping and while in Europe we seem to have 'tanned' models in adds, over here they go for the vampire look. All the adds seem to employ westerners, and very pale people at that, in fact most of them look sickly pale to me.

Who knew that the 'geek who shuns daylight' look would be fashionable over here ;)

This entry was originally posted at http://pvaneynd.dreamwidth.org/151569.html. Please comment there using OpenID.
» Too long for twitter: dreaming about the culture
This morning while waking up I was dreaming about the culture.

It started off as a pretty normal dream involving a hidden base where we lived, with an alien space ship inside of it. The main part was that it was well protected about the rain ;). (It rained a lot here yesterday)

Then it went a bit Casablanca on me because another space ship case to visit the base. The avatar of that ship talked with the alien ship and after a while complained that they were discussing in 'greed'. The alien ship replied that 'greed' was an exact language leaving no ambiguities, like Marain. The avatar replied that indeed 'greed' was almost as exact and well specified as Marain, but that the core of 'greed' is about what you wanted and it limites the possibilities. Marain on the other hand talked about what was possible and the infinite possibilities out there.

Then I realised I was dreaming a Culture novel, and irritatingly woke up.

This entry was originally posted at http://pvaneynd.dreamwidth.org/151106.html. Please comment there using OpenID.
» Throne of the Crescent Moon, Saladin Ahmed
This was a funny book, but too much 'fantasy' for me. It was also pretty much following the 'default' plot so it was a bit predictable. I also found it a bit not descriptive enough.

All in all not bad, certainly better then 2312 but technically not so good as Redshirts.

Now reading Captain Vorpatril’s Alliance and it's gripping.

This entry was originally posted at http://pvaneynd.dreamwidth.org/150969.html. Please comment there using OpenID.
» 2312, Kim Stanley Robinson

The story did not capture me, I could frankly not care less about the characters. Finishing it was a chore. I was having the impression of reading a bad version of AADB but without the humor, joy and captivating story.

In Debian it would go below 'further discussion' :(.

Now reading Throne of the Crescent Moon by Saladin Ahmed, which even if it is more fantasy then SF for now caught me already and I really want to find out what happens next.

This entry was originally posted at http://pvaneynd.dreamwidth.org/150738.html. Please comment there using OpenID.
» Hugo 2013: Redshirts
As for the last few years I'm going to try to read the Hugo nominees and vote again.

I started with Redshirts from John Scalzi. Now I like Scalzi, I got Old Man's War in a previous Hugo voter packet and bought a few other books in that series.

However Redshirts is not doing much for me. It feels a bit like professional fanfick, which it is in some way. It is very funny to read and to find the references but in some way it left me unsatisfied.

Next up: 2312 were I am still waiting for it to hook me after ~30% read, which is not a good sign :(.

This entry was originally posted at http://pvaneynd.dreamwidth.org/150508.html. Please comment there using OpenID.
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