stek: differentiate initial state from valid time window of TOTP
There was a confusion in the TOTP implementation in stek.c. When the mechanism is initialized at the first time, it records the timestamp but doesn't initialize the key. This removes the timestamp recording at the initialization phase, so the key is properly set later. Signed-off-by: Daiki Ueno <email@example.com>
This commit is part of merge request !1275. Comments created here will be created in the context of that merge request.