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4.14.2 Command Description
The same as chapter 4.1.13.2, user gets promoted from the LCD for entering account
password (PIN). After the PIN is entered and the confirm key is pressed, the PINPAD will
use the Card Number data received from main host to generate PIN Block according to ANSI
X9.8 Standard, and then encrypt the PIN Block using PIN encryption Key.
When entering account password, user cannot cannel that operation; only main host can send
command to cancel PIN Entry.
For protecting against exhaustion PIN attack, the number of PIN Entry attempts is limited in
a period of time. Only 110 times of PIN Entry is allowed in 1 hour.
For screen display flows please see below:
Random Number
Choose PIN encryption key
PIN Entry
Cancel PIN Entry
Entries the interface of enter PIN, the backlight and the green LED indicator light will turn
on.
The interface of enter PIN see below
Select
PLS Input
PIN:
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