Hitachi CP-AX2505 User Manual page 101

8.4 Command Control via the Network (continued)
Automatic Connection Break
The TCP connection will be automatically disconnected after there is no
communication for 30 seconds after being established.
Authentication
The projector does not accept commands without authentication success
when authentication is enabled. The projector uses a challenge response type
authentication with an MD5 (Message Digest 5) algorithm.
Password and digest this data with the MD5 algorithm and add this in front of the
commands to send.
Following is a sample if the Authentication Password is set to "password" and the
random 8 bytes are "a572f60c".
1) Connect the projector.
"password" and it becomes "a572f60cpassword".
4) Digest this bind "a572f60cpassword" with MD5 algorithm.
It will be "e3d97429adffa11bce1f7275813d4bde".
5) Add this "e3d97429adffa11bce1f7275813d4bde" in front of the commands
and send the data.
6) When the sending data is correct, the command will be performed and the
reply data will be returned. Otherwise, an authentication error will be returned.
NOTE
authentication data can be omitted when the same connection.
8. Other Functions
101