Jaap-Henk Hoepman – on security, privacy and…

Using a mobile phone number as an authentic identifier

Posted in Science, Seeds by Jaap-Henk on April 27, 2010

This idea came up when I saw a guy in the train today, carrying a cardboard box with a number written on it.

I stared at the box, and it took a short while before I realised the number was a phone number. I wondered why that was, and then it occurred to me that maybe the guy carrying the box was the recipient of the box. Maybe the phone number on the box was used to call him up to say his parcel was waiting for him…

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SMS authenticatie: nog steeds waardevol (voor two-factor authentication).

Posted in Opinies (Nederlands) by Jaap-Henk on January 12, 2010

Govcert raadt aanbieders van sms authenticatie diensten (zoals telebankieren of DigiD) aan om geen nieuwe diensten aan te beiden en voor bestaande diensten een hernieuwde risico analyse uit te voeren. Dit naar aanleiding van de nieuwste ontwikkelingen rondom het kraken van het encryptie algoritme A5/1 in mobiele telefoons (GSM).

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