Yubikey 1 and Yubikey 2 static mode - bug

2009-08-06T22:40:37+01:00

The first (AFAIK) Yubikey 2 bug has been reported: Configuring a Yubikey 1 and a Yubikey 2 in static mode with identical input parameters produces different output.

The cause is that the use counter is set to the fixed value 0x7fff rather than 0xffff. One can of course argue what is the most logical choice, but given the choice made for Yubikey 1, we'll change the behavior to be identical for Yubikey 2.

Pending version 2.0.2 fixes this issue. Yubikeys being shipped from around August 20 will include this firmware version.

Regards,

JakobE
Hardware- and firmware guy @ Yubico

Statistics: Posted by Jakob — Thu Aug 06, 2009 10:40 pm

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Yubikey 1 and Yubikey 2 static mode - bug