Discrete time window example
- 23 Jan 2025
- 1 Minute à lire
- SombreLumière
- PDF
Discrete time window example
- Mis à jour le 23 Jan 2025
- 1 Minute à lire
- SombreLumière
- PDF
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Initial parameters
- Digipass time step: 36 seconds
- Identification time window: 10 Digipass time steps
- Discrete synchronization time window: 3 hours (SyncWindow = 3 | SW_DISCRETE)
Step 1: Mobile Authenticator Studio is correctly adjusted
An authentication request succeeds because:
- The SyncWindow is configured to accept OTPs from GMT-1 to GMT+1 (SyncWindow = 3 | SW_DISCRETE).
- The mobile phone drift is less than ITimeWindow x time step/2.
The authentication request iterates on:
- Discrete time window GMT+0 (iteration 1): OTP validated.
Step 2: After the daylight savings adjustment, the mobile phone clock is set back one hour
An authentication request succeeds because:
- SyncWindow is configured to accept OTPs from GMT-1 to GMT+1 (SyncWindow = 3 | SW_DISCRETE).
- The mobile phone drift is less than ITimeWindow x time step/2.
The authentication request iterates on:
- Discrete time window GMT+0 (iteration 1)
- Discrete time window GMT-1 (iteration 2)
- Discrete time window GMT+1 (iteration 3): OTP validated
After successful authentication at GMT+1, the SyncWindow stays centered around GMT+0.
Step 3: The mobile phone is now set 2 hours later
An authentication request succeeds because:
- SyncWindow is configured to accept OTPs from GMT-1 to GMT+1 (SyncWindow = 3 | SW_DISCRETE).
- The mobile phone drift is less than ITimeWindow x time step/2.
The authentication request iterates on:
- Discrete time window GMT+1 (iteration 1)
- Discrete time window GMT+0 (iteration 2)
- Discrete time window GMT-1 (iteration 3): OTP validated
The first iteration starts at the previous time zone (here GMT+1).
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