Mostly Software Engineering » Uncategorized http://www.advansen.com Gabriel Gonzalez's notebook Thu, 22 Jul 2010 13:47:36 +0000 http://wordpress.org/?v=2.9.2 en hourly 1 Long long time ago http://www.advansen.com/2007/09/13/long-long-time-ago/ http://www.advansen.com/2007/09/13/long-long-time-ago/#comments Thu, 13 Sep 2007 09:37:48 +0000 Gabriel Gonzalez http://www.advansen.com/2007/09/13/long-long-time-ago/ Not enough time to keep this blog up to dates with articles and stuff. But soon I will be presenting a really nice and innovative tool which is gonna make our life better. See you soon

]]> http://www.advansen.com/2007/09/13/long-long-time-ago/feed/ 0 Happy newborn 2007 http://www.advansen.com/2007/01/01/happy-newborn-2007/ http://www.advansen.com/2007/01/01/happy-newborn-2007/#comments Mon, 01 Jan 2007 02:36:05 +0000 Gabriel Gonzalez http://www.advansen.com/2007/01/01/happy-newborn-2007/ I wish all the anonymous and known readers of this blog the best for the 2007 and following years. I hope through this year we can keep improving the world contributing to keep the information free as it should be.

All the best!

]]> http://www.advansen.com/2007/01/01/happy-newborn-2007/feed/ 0 Bogus Holidays! http://www.advansen.com/2006/09/08/bogus-holidays/ http://www.advansen.com/2006/09/08/bogus-holidays/#comments Fri, 08 Sep 2006 08:13:02 +0000 Gabriel Gonzalez http://www.advansen.com/2006/09/08/bogus-holidays/ After a while publishing nothing I have come with this “wee” post just to complain about my holidays! I came to Spain willing to have a nice rest, enjoying the sun shineing and stuff BUT I am stuck at my parent´s business!!

It is not bad at all since I chat with quite a few ppl and I enjoy that and I help my parents as well but I need to sleep 12h in a row and spend the rest of the day with my computer!

Well maybe be in a couple of weeks :)

]]> http://www.advansen.com/2006/09/08/bogus-holidays/feed/ 22 Easy migration to a 3 Factor Auth System http://www.advansen.com/2006/06/28/easy-migration-to-a-3-factor-auth-system/ http://www.advansen.com/2006/06/28/easy-migration-to-a-3-factor-auth-system/#comments Wed, 28 Jun 2006 10:26:28 +0000 Gabriel Gonzalez http://www.advansen.com/2006/06/28/easy-migration-to-a-3-factor-auth-system/ Migration from a two factor to a three factor authentication electronic bank system.

Nowdays, almost all of the e-banking systems in Spain have already switched to a two factor authentication system based on:

  1. PIN
  2. a Token Card (Tarjeta coordenadas, a card with a matrix of numbers printed which the system ask to enter randomly)

For almost every human is quite hard to remember an unrelated sequence of random numbers, that’s why most of the users still write down their PIN and keep them together the cards or choose easy numbers like birthdays. If the cards are stolen the thief could bypass easily the second method since it just ask to enter the numbers at random positions being completely useless from a security point of view.

I propose an easy way to extend this system to a 3 Authentication method just asking for an extra number from the token card when logging in the system.

The client should be provided of a method easy enough to remember without writing it down but hard to guess. This method should be chosen randomly from a list trying to distribute them homogeneusly among all the clients.

This method could be sent to the user via the channel used to send the PIN.

The methods I propose should allow to select a cell from the card increasing the security of the system, such methods could be similiar to the detailed below:

  • Introduce the first asked cell
  • Introduce the cell corresponding the current month
  • idem but current day
  • select the cell using the 3rd number of your credit card number.
  • etc

These are just some examples which are easy to remember and hard to guess for any guess since there a large amount of methods of given the system the extra number.

If you notice this method shows any weakness please email me.

]]> http://www.advansen.com/2006/06/28/easy-migration-to-a-3-factor-auth-system/feed/ 3 No More Blogging http://www.advansen.com/2006/06/14/no-more-blogging/ http://www.advansen.com/2006/06/14/no-more-blogging/#comments Wed, 14 Jun 2006 22:01:07 +0000 Gabriel Gonzalez http://www.advansen.com/2006/06/14/no-more-blogging/ I will no publish more entries in the blog till some of the projects I am involved reach an enough mature point to make them available.

No enough to cope with this

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Optimising C++ apps

C++ Templates – The Complete Guide

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]]> http://www.advansen.com/2006/04/03/free-vst-instruments/feed/ 3 Secure MSN Project http://www.advansen.com/2006/03/28/secure-msn-project/ http://www.advansen.com/2006/03/28/secure-msn-project/#comments Tue, 28 Mar 2006 13:15:01 +0000 Gabriel Gonzalez http://www.advansen.com/2006/03/28/secure-msn-project/ MSN Protocol description

Packet Filtering in .NET

Winsock Firewall

Several OS win firewalls

]]> http://www.advansen.com/2006/03/28/secure-msn-project/feed/ 2 New blog new life http://www.advansen.com/2006/01/08/new-blog-new-life/ http://www.advansen.com/2006/01/08/new-blog-new-life/#comments Sun, 08 Jan 2006 11:45:00 +0000 Gabriel Gonzalez http://www.advansen.com/?p=4 After Ru reminded me I had an old blog in www.livejournal.com/usrs/ggonzalez I wanted me to continue posting news about what happens in my life. I don’t want a lot of people reading this shit, even I would be happy without any read ever.&
I just want to keep this update to be aware of how much things are changing in our lifes ;)
Ah! And the new life is about I feel it is time to become the guy I used to be :D

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