146
IrIs BIometrIC modeL
10. Process AR
10
: the AF_B verifies the received message from
the AF_A:
a. In case the message is not valid (i.e., the type of the mes-
sage sent via the IP address is not defined at the level of the
incoming port of the AF_B), the AF_B informs the AF_A
that the message M is blocked. e AF_A reacts to see the
cause of blocking. It perceives its environment to adjust its
behavior and decides to send the message M again.
b. If not, the AF_A sends the message to the AU_B and
executes the next process.
11. Process AR
11
: the AU_B asks the AK_B to retrieve the pri-
vate key of the receiver to decrypt the encrypted message M.
12. Process AR
12
: the AK_B takes the request and sends the pri-
vate key of the receiver in encr ...