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0answers
58 views

How do OTP USB sticks work?

I just discovered the YubiKey NEO which seems like a pretty awesome device for maintaining security for a variety of different things including computer login, SSH private keys, GPG private keys, and ...
1
vote
1answer
98 views

How to detect suspicious tokens collected by a hacker

I previously asked a question here What's the use of adding a challenge in the otp algorithm? Let's suppose that a hacker has succeeded to collect tokens. Is there a way to detect suspicious ...
6
votes
1answer
238 views

What's the use of adding a challenge to a one time password algorithm?

In these YouTube videos Challenge-Respond Mode and Sign Mode the customer enters a challenge into the CAP device before generating a one time password. Why not just generate the one time password ...