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Alexandre Alapetite
Works at Alexandra Institute
Attended University of Montpellier
Lives in København
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Alexandre Alapetite

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Article pour lequel j'ai eu une petite interview :-)
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Le phénomène de seconde intercalaire est une curiosité scientifique peu connue, mais qui peut avoir un effet désastreux sur les systèmes informatiques. En 2012, Mozilla en avait notamment fait les frais. Une nouvelle seconde intercalaire est prévue en 2015 pour la nuit du 30 juin. Explications avec Daniel Gambis, patron du Service International de la Rotation terrestre et Alexandre Alapetite, docteur en informatique.
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Alexandre Alapetite

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After more than a decade advocating IPv6, I am amazed to finally have it at home in Copenhagen! Welcome to the future! :-)

Despite the fact that my new Internet provider said they do not have it*....

It is not native IPv6 yet but close enough, and they do assign a full /48 6to4 address range (i.e. many many addresses): 2002:567:x::/48.
I was even able to play successfully with SLAAC (Stateless address autoconfiguration) with success; good riddance IPv4 NAT'ing :-p

* Min Internetudbyder om IPv6, før vi bestilte: "Det er ikke noget vi kan håndtere og bør undlades på jeres pc'er. Hvad jeg forstår er det noget der officielt bliver brugt i Kina og ikke andre steder endnu."


#ipv6  
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Ah, Java.
So today, I wanted to install Java EE 7 64-bit on a fresh Win8 machine.
The Java EE 64-bit installer fails, then crashes... because it requires... Java.
Nevermind, I install Java 7 JRE 64-bit.
I then re-launch the Java EE 64-bit installer, which crashes again... because it requires a 32-bit version of Java pre-installed. WTF.
I proceed to installing Java 7 JRE 32-bit with online installer, which fails to find the files to download...
Same again with offline installer, which succeeds (yeah... not to mention the crapware bundled with the JRE installer).
The Java EE installer now works, and as I will be working with Tomcat, I do not want Oracle's Glassfish server, but the custom installation that would allow not installing it is "Not Supported".
Sigh...
#java #fail #WTF  
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Så meget for bare at installere 1 program...
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Interesting Spanish start-up for the Internet of Things and do-it-yourself home automation, including an extension board for Raspberry Pi :-)
#DIY   #domotics #domotique #raspberrypi #internetofthings  
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They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety. (Benjamin Franklin, 1775) #NSA #Snowden  
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Sankt Hans aften i Vanløse
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For the open source lovers, EasyRSS, an Android news reader app I maintain is now available in F-Droid :-) (open source alternative to Google Play Store)
https://f-droid.org/repository/browse/?fdid=org.freshrss.easyrss
To be used with a FreshRSS back-end (another project I contribute to) http://freshrss.org
#RSS #Android
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From a Danish start-up:
 
We are thrilled to announce the launch of The Eye Tribe Tracker, the first truly affordable eye tracking device. The device is priced at only $99, and includes an SDK that allows you to integrate our eye tracking technology into applications and games.

Pre-order yours now at https://theeyetribe.com/order/
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Je comprends  mieux !
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The evolving relationship between humans and machines is the key theme of Gartner, Inc.'s
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Grrr, after Reader and many others, Google is killing yet another great service, this time Latitude, and with less than one month of warning of course. My Google love index is approaching zero... #Latitude
Google Latitude will be retired on August 9th, 2013. Products being retired include Google Latitude in Google Maps for Android, Latitude for iPhone, the Latitude API, the public badge, the iGoogle Gadget, and the Latitude website at maps.google.com/latitude. What does this mean for me?
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Cross-platform way of storing hashed passwords, using only built-in functions available in C# .NET 2.0+, Java SE 6+, PHP 5.5+. Based on PBKDF2 with internal SHA-1.

* PHP
http://www.php.net/manual/function.hash-pbkdf2.php

echo hash_pbkdf2('sha1', 'password', 'salt1234', 100000 /iterations/ , 32 * 2 /length/, false /raw_output/);

* C#
http://msdn.microsoft.com/library/yx129kfs.aspx

using (var pbkdf2 = new System.Security.Cryptography.Rfc2898DeriveBytes("password", Encoding.UTF8.GetBytes("salt1234"), iterations: 100000))
{
    Console.WriteLine(BitConverter.ToString(pbkdf2.GetBytes(cb: 32)).Replace("-", String.Empty).ToLowerInvariant());
}

* Java
http://docs.oracle.com/javase/6/docs/api/javax/crypto/SecretKeyFactory.html

java.security.spec.KeySpec keySpec = new javax.crypto.spec.PBEKeySpec("password".toCharArray(), "salt1234".getBytes("UTF-8"), 100000 /iterations/, 32 * 8 /length/);
byte[] bytes = javax.crypto.SecretKeyFactory.getInstance("PBKDF2WithHmacSHA1").generateSecret(keySpec).getEncoded();
StringBuffer result = new StringBuffer();
for (byte b:bytes) result.append(String.format("%02x", b));
System.out.println(result.toString());

#csharp #php #java #cryptography  
Key derivation process [edit]. The PBKDF2 key derivation function has five input parameters: DK = PBKDF2(PRF, Password, Salt, c, dkLen). where: PRF is a pseudorandom function of two parameters with output length hLen (e.g. a keyed HMAC); Password is the master password from which a derived key ...
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+SourceForge: Huh, read-access to all SourceForge.net users' home, that does not look normal :-/
For the curious, there are for instance 84834 SourceForge users starting with the letter 'a' (at least on this server)....
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Wut!? 0.0
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Have him in circles
122 people
Jakob Kruse's profile photo
Soeren Thomsen's profile photo
Mikkel Zahle Oestergaard's profile photo
Gulvafslibning's profile photo
maxwell ndakwah's profile photo
Jean-Charles Decorte's profile photo
James Haggard's profile photo
Morten Rudi's profile photo
Philippe Palanque's profile photo
Work
Occupation
Senior Software/ICT Engineer
Skills
Informatics
Employment
  • Alexandra Institute
    Senior Software/ICT Engineer, 2013 - present
    Research & Development
  • Technical University of Denmark
    Senior researcher, 2011 - 2013
  • Technical University of Denmark
    Researcher, 2007 - 2011
  • Risø National Laboratory
    PhD student, 2003 - 2007
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
København
Previously
Toulouse - Montpellier - Avignon
Story
Introduction
Doctor of informatics
Education
  • University of Montpellier
    Informatics, 1998 - 2002
  • University of Toulouse
    Informatics, 2002 - 2003
Basic Information
Gender
Male
Alexandre Alapetite's +1's are the things they like, agree with, or want to recommend.
Seconde intercalaire : une seconde de trop ?
www.zdnet.fr

Le phénomène de seconde intercalaire est une curiosité scientifique peu connue, mais qui peut avoir un effet désastreux sur les systèmes inf

OS Monitor – Android-apps på Google Play
market.android.com

% A major update is applied, some devices may not work properly, please send me email to tell me what your phone and OS, I will fix it asap.

BYG LEGO MED ØJNENE
video.itu.dk

Smid papirmanualerne ud og byg LEGO med øjnene ved hjælp af din iPad.I et nyt forskningsprojekt mellem...

Google Reader Clone | News+
market.android.com

Google Reader was the most popular service for reading feeds. This extension allows you to use services that has the same API as Google Read

Avant sa mort, Steve Jobs voulait "enfermer les clients dans notre écosy...
www.numerama.com

"Enfermer plus encore nos clients dans notre écosystème". Telle était la stratégie d'Apple résumée en interne par Steve Jobs, un an avant sa

Alexandra Instituttet
plus.google.com

Alexandra Instituttet har ikke delt noget på denne side med dig.

The Eye Tribe
plus.google.com

The Eye Tribe - Eye Control for the Mass Market

Airbus A350 cockpit tour with test pilot Jean-Michel Roy (video)
www.engadget.com

What's it like to fly the A350? Only a handful of pilots know for sure, but Jean-Michel Roy has a pretty good idea. The Airbus test pilot ha

Now That It's in the Broadband Game, Google Flip-Flops on Network Neutra...
www.wired.com

In a dramatic about-face on a key internet issue yesterday, Google told the FCC that the network neutrality rules Google once championed don

A WWII Propaganda Campaign Popularized the Myth That Carrots Help You Se...
blogs.smithsonianmag.com

How a ruse to keep German pilots confused gave the Vitamin-A-rich vegetable too much credit

New meta-analysis checks the correlation between intelligence and faith
arstechnica.com

First systematic analysis of its kind even proposes reasons for the negative correlation.

EXCLUSIVE: Owner of Snowden’s Email Service on Why He Closed Lavabit Rat...
www.democracynow.org

Lavabit, an encrypted email service believed to have been used by National Security Agency leaker Edward Snowden, has abruptly shut down. Th

Any cellphone can be traced by its digital fingerprint - tech - 01 Augus...
www.newscientist.com

Slight differences in cellphone components give every handset an unalterable secret signature – that offers a simple way to track them

IKEA's Augmented Reality 2014 Catalog Lets You Preview Products in Your ...
inhabitat.com

IKEA is introducing augmented reality through its iOS and Android application for its 2014 catalog.

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