[Gllug] Oyster cards vulnerable?

Christopher Hunter chrisehunter at blueyonder.co.uk
Wed Jan 23 02:25:14 UTC 2008


On Wed, 2008-01-23 at 00:20 +0000, Richard Jones wrote:
> The Dutch OV card (similar to Oyster) uses a secret proprietary crypto
> algorithm and a 48 bit key.  Rather predictably, it was broken by
> researchers this month:
> 
> http://www.freedom-to-tinker.com/?p=1250
> 
> According to the press release, Oyster cards are of the same type:
> 
> http://www.cs.virginia.edu/~kn5f/OV-card_security.html
> 
> Rich.
> 
> -- 
> Richard Jones
> Red Hat

Oyster Cards were cracked a while ago.  They are surprisingly crude
things.  If TfL had spent another tuppence per card, they could have had
one with proper encryption.  Instead, they chose the cheapest option...

Chris 


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