System requirements for using SHA-2 cipher suites with MQTT channels

If we use a version of Java that supports SHA-2 cipher suites, we can use these suites to secure your MQTT (telemetry) channels and client apps.

For IBM MQ Version 8.0, which includes the telemetry (MQXR) service, the minimum Java version is Java 7 from IBM, SR6. SHA-2 cipher suites are supported by default in Java 7 from IBM, SR4 onwards. We can therefore use SHA-2 cipher suites with the telemetry (MQXR) service to secure your MQTT (telemetry) channels.

If we are running an MQTT client with a different JRE, we need to ensure that it also supports the SHA-2 cipher suites. Details of the SHA-2 cipher suite support for each client is given in System requirements for using SHA-2 cipher suites with MQTT clients.

Parent topic: MQ Telemetry troubleshooting

Related information

• Telemetry (MQXR) service
• Telemetry channel configuration for MQTT client authentication using TLS
• Telemetry channel configuration for channel authentication using TLS
• DEFINE CHANNEL (MQTT)
• ALTER CHANNEL (MQTT)