SHARP PN Series Interactive Display Instruction Manual

PN Series Interactive Display

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Product Information

Specifications

• Model Numbers: PN-ME652, PN-ME552, PN-ME502, PN-ME432

• Interactive Display Operation Manual for Secure Command

• Supported Public Key Methods: RSA (2048-bit), DSA, ECDSA-256,
  ECDSA-384, ECDSA-521, ED25519

• Operating System Compatibility: Windows 10 (version 1803 or
  later), Windows 11

Product Usage Instructions

Creating Private and Public Keys

1. Use OpenSSL, OpenSSH, or terminal software to create private
   and public keys.

2. For RSA key creation using OpenSSH on Windows:

3. Open a command prompt from the Start button.

4. Run the following command:

        C:ssh-key>ssh-keygen.exe -t rsa -m RFC4716 -b 2048 -N user1 -C rsa_2048_user1 -f id_rsa

5. Private (id_rsa) and public (id_rsa.pub) keys will be
   generated. Keep the private key secure.

Registering a Public Key

1. Copy the public key file (e.g., id_rsa.pub) to a USB flash
   drive.

2. Connect the USB flash drive to the USB1 terminal of the
   monitor.

3. In the Setting menu of the monitor, navigate to Administrator
   Settings > Network > Monitor Control.

4. Set “Use Secure Protocol for Authentication” to ON.

5. Select “Upload for Public Key File” and choose the public key
   file on the USB flash drive to register it.

Command Control via Secure Communication Protocol

1. Connect the computer to the monitor.

2. Start an SSH client, specify the IP address and data port
   number (Default: 10022) to connect to the monitor.

3. Set the user name (Default: Admin) and use the private key
   associated with the registered public key.

4. Enter the passphrase for the private key. If authentication is
   successful, the connection will be established.

Frequently Asked Questions (FAQ)

Q: What is the default data port number for connecting to the

monitor via SSH?

A: The default data port number is 10022.

Q: Which public key methods are supported by this monitor?

A: This monitor supports RSA (2048-bit), DSA, ECDSA-256,
ECDSA-384, ECDSA-521, and ED25519 public key methods.

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PN-ME652 PN-ME552 PN-ME502 PN-ME432
INTERACTIVE DISPLAY OPERATION MANUAL for Secure Command
PN-ME652-ME552-ME502-ME432 EN(1)
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Controlling the Monitor via Secure Communication (LAN)

You can control this monitor with secure communication from a computer via network.
TIPS
· This monitor must be connected to a network. · Set “Ethernet” to ON in “Administrator Settings” >
“Network” > “Ethernet” on the Setting menu and configure network settings in “Ethernet”. · Set “Monitor Control via Network” to ON in “Administrator Settings” > “Network” > “Monitor Control” · Set “Control Terminal” to “LAN” and set the other settings for the commands are set in “Administrator Settings” > “Setup” > “Advanced”
Control via secure communication
User authentication and encrypted communication can be performed using public key cryptography. To perform secure communication, a private key and public key must be created in advance, and the public key must be registered with the device. Client software that supports secure communication is also required. N-format commands and Sformat commands are used to control this device. Please also read the instructions for each format.

Creating Private and Public Keys

Use OpenSSL, OpenSSH, or a terminal software to create private and public keys. The following public key methods are supported in this monitor.
RSA(20484096bit)
DSA ECDSA-256 ECDSA-384 ECDSA-521 ED25519 OpenSSH is available as standard on Windows 10 (version 1803 or later) and Windows 11. This section describes the procedure for creating an RSA key using OpenSSH (sshkeygen) on Windows.

(1) Open a command prompt from the Start button.

(2) Send the following command to create the key with the

following setting:

key type:

RSA

length:

2048bit

passphrase:

user1

public key comment: rsa_2048_user1

file name:

id_rsa

C:ssh-key>ssh-keygen.exe -t rsa -m

RFC4716 -b 2048 -N “user1” -C

“rsa_2048_user1” -f id_rsa

Generating public/private rsa key pair.

Your identification has been saved in

id_rsa.

Your public key has been saved in

id_rsa.pub.

The key fingerprint is:

SHA256:NB7PiZnl+S1Osig5P0lne+h7AarPOP0z9B

UpHl2OSzU rsa_2048_user1

The key’s randomart image is:

+—[RSA 2048]—-+

|

|

|

Eo|

| xxxxxxxxxxxxxx |

|

.=+=. |

+—-[SHA256]—–+

(3) “id_rsa” – private key and “id_rsa.pub” – public key will be created. Keep the private key in a safe place. For details of the commands, please refer to the description of each
tool.

Registering a public key
Register the public key on the Setting menu of the monitor.
(1) Copy the public key file (id_rsa.pub in the example above) to the USB flash drive.
(2) Connect the USB flash drive to the USB1 terminal of the monitor.
(3) Set “Use Secure Protocol for Authentication ” to ON in “Administrator Settings” > “Network” > “Monitor Control” on the Setting menu.
(4) Select “Upload” for “Public Key File” and the file selection screen will be displayed.
(5) Select the public key file on the USB flash drive to register the public key. Registered public key files can be downloaded and deleted.

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Command control via secure communication protocol.
This device can be controlled via secure communication using SSH authentication and encryption functions. Implement “Creating Private and Public Keys” and “Creating Private and Public Keys” procedure before.
(1) Connect the computer to the monitor. 1. Start SSH client, specify the IP address and data port number (Default setting: 10022) and connect the computer to the monitor. 2. Set the user name (Default setting: Admin) and the private key for the registered public key, and enter the passphrase for the private key. 3. If the authentication is successful, the connection is established.
(2) Send commands to control the monitor. 1. Use N-format or S-format commands to control the monitor. For details on commands, refer to the manual for each format.
TIPS · If there is no command communication after the “Auto
Logout Time” (Default value: 5 minutes), the connection will be automatically disconnected. · Up to one connection can be used at the same time. · Normal and secure connections cannot be used at the same time.
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