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2.2 Security
The IoT Gateway has a certificate management for secure communication. A corresponding
software interface is supplied for this purpose, which can be displayed in any web browser.
The configuration of the security levels and the administration of the certificates are carried
out in this interface. This is based on the mechanisms defined by the OPC Foundation. OPC
UA Security includes authentication and authorisation, encryption and data integrity through
signing. In this way, the control system can be protected against uncontrolled access via a
higher-level system.
2.2.1 Encryption
There are different levels of encryption (Encrypt): None, Basic128Rsa15 and Basic256.
None
No encryption
Basic128Rsa15
128 bit encryption
Basic256
256 bit encryption
The IBH Link UA function supports the Level Sign and SignAndEncrypt
None
Sign
Sign and Encrypt
Sign + Sign and
Encrypt
2.2.2 Certificates
Another security level of OPC UA is the exchange of certificates. Communication is only
possible when both server and client have been assigned a valid certificate by the respective
partner.
_________________________________________________________________________
Document: Quickstart_IoTGateway_EN
Rev: 001G
Date: 01/02/2022
No security level, fastest data transmission
The messages contain signed certificates
The messages contain signed certificates and are encrypted
The messages may contain only signed certificates, or can be
signed and are encrypted as well
Mitsubishi Electric Europe B.V.
6
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