An organization has introduced token-based authentication to system administrators due to
risk of password compromise. The tokens have a set of numbers that automatically change
every 30 seconds. Which of the following type of authentication mechanism is this?
A.
TOTP
B.
Smart card
C.
CHAP
D.
HOTP
I have suspected how the TOTP and HOTP are different? and why HOTP it not correct?
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key word here is “every 30 seconds”
Time-based one-time password (TOTP) tokens or synchronous dynamic password tokens
are devices or applications that generate passwords at fi xed time intervals, such as every60 seconds.
Time-interval tokens must have their clocks synchronized to an authentication
server. To authenticate, the user enters the password shown along with a PIN or passphrase as a second factor of authentication. The generated one-time password provides identification, and the PIN/passphrase provides authentication.
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