Of course, I meant "wringer"!  

 

 

 
> Date: Thu, 7 Jan 2010 18:03:24 -0500
> From: [email protected]
> Subject: Re: Korean bank Moves back to Mainframes (...no, not back)
> To: [email protected]
> 
> > But, the PIN is supposed to be a secret.
> 
> 
> They make a point of not knowing what your actual PIN is. What they 
> put in the chip is an encrypted PIN block that has to be matched after 
> the PIN that you actually key in has been put through the ringer. 
> 
> Even if you could read the chip, and find your PIN block, unless you knew 
> what cryptographic key(s) were used, and which variant(s), to create it and 
> using which algorithm(s), you wouldn't be able to come up with your clear 
> text PIN. Your clear text PIN is not recorded anywhere unless you wrote it 
> down. 
> 
> 
> 
> 
> > Date: Thu, 7 Jan 2010 22:51:52 +0000
> > From: [email protected]
> > Subject: Re: Korean bank Moves back to Mainframes (...no, not back)
> > To: [email protected]
> > 
> > >I presume they did that for your convenience. (Not anybody else's since 
> > >they wouldn't know the PIN.) 
> > However, being a "smart" card with a processor on it, you should be able to 
> > change your PIN at an ATM. 
> > 
> > Yes!
> > But, the PIN is supposed to be a secret.
> > Give me the chip-card, and have me come in to re-do my PIN would have made 
> > me feel more secure.
> > 
> > They didn't do that!
> > -
> > Too busy driving to stop for gas!
> 
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