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Demo mode, simulated J1939 data
Starting
Starting
Starting
SessionStarting demo
TransportNot connected
No sample yet
SecurityNot secured
Expires inNo expiry

Session security

Session security

The session is not secured

Handshake facts, key fingerprints and record counters appear here once a session is secured. Start a session from the context bar, or join one from the vehicle view.

Envelope inspector

These are the wire messages exactly as they cross the link between the two sides. After the handshake every record is ciphertext: the hex is encrypted bytes, and only the header fields (type, epoch, sequence) are readable.

Flips one byte of the next record on the wire. The receiver's authentication check fails and it drops the record.

Sends the last record again, unchanged. Its sequence number was already accepted, so the receiver drops it.

No link

The link between the two sides is not running, so there are no wire messages to show.