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HandEra 330 User Guide
Figure A-26. Login Script
Token-Based Authentication Systems
Token-based authentication systems are security systems and provide
another security barrier to the access of network servers. Token-
based authentication systems make use of small credit-card-sized
devices called “token cards” or “security keys,” which users carry
with them and must use to complete the authentication process when
they log in to a network server.
There are currently three types of token-based authentication
systems.
♦
Time-Synchronous
– The token card generates dynamic
passwords based on an exact schedule. The schedule is aligned
between the authentication server and the token hardware
using built-in synchronized clocks.
♦
Challenge-Response
– The authentication server prompts the
user with a dynamically generated value — the challenge. The
user enters this challenge value on the token card, and the
token card generates a response value. The user enters this
response value like a password on the HandEra computer.
♦
Event-Synchronous
– This system generates and tracks an
ordered series of dynamic passwords. The server matches the
passwords based on the iteration ID.
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