Diagnostic method for security records in networking application

A diagnostic method, comprising:

• monitoring communication failure rates at a terminal,
• when communication failure rates indicate a possible abnormality, causing a networking circuit of the terminal to enter an offline state,
• providing test data to the networking circuit,
• receiving processed test data from the networking circuit,
• comparing the processed test data to expected processed test data, the expected processed test data having been generated with reference to a security record, and
• if they match, returning the networking circuit to an online state.

A terminal, comprising:

• a networking circuit to support the terminal's communication with a network, comprising:
• an encryption engine,
• a memory to store security records,
• an interface to the network,
• a processing element provided to source data to the networking circuit,
• a driver, to confirm proper operating of the networking circuit by:
• providing test data to the networking circuit,
• receiving processed test data from the networking circuit,
• comparing the processed test data to an expectation of the processed test data.

A computer readable medium storing program instructions that, when executed, cause to be performed a method, comprising:

• causing a networking circuit to enter a loopback mode,
• providing test data to the networking circuit,
• receiving processed test data from the networking circuit,
• comparing the processed test data to expected processed test data, and
• if they match, confirming integrity of the security record.

A method of storing a new security record in a networking circuit, comprising:

• commanding the networking circuit to store the new security record,
• commanding the networking circuit to process test data with reference to the new security record,
• comparing processed test data with expected processed test data, and
• confirming the storing if the processed test data and the expected processed test data match.