Crypto dongles to secure online transactions

Darren J Moffat Darren.Moffat at Sun.COM
Mon Nov 23 07:40:34 EST 2009

Peter Gutmann wrote:
> external data from finding its way onto their corporate networks (they are
> really, *really* concerned about this).  If you wanted this to work, you'd
> need to build a device with a small CMOS video sensor to read data from the
> browser via QR codes and return little more than a 4-6 digit code that the
> user can type in (a MAC of the transaction details or something).  It's
> feasible, but not quite what you were thinking of.

That reminds me of the Lenslok copy protection device on the Elite (and 
others) game from the '80s[1]


Darren J Moffat

The Cryptography Mailing List
Unsubscribe by sending "unsubscribe cryptography" to majordomo at

More information about the cryptography mailing list