SUPPLY AUTHENTICATION VIA TIMING CHALLENGE RESPONSE

摘要

In an example implementation, a print supply cartridge comprises a microcontroller to receive a timing challenge and enable authentication of the cartridge by providing a challenge response. The challenge response is provided in a challenge response time that falls within an expected time window.

主权项

1. A device to facilitate authentication of a replaceable supply device comprising:
a memory and logic to receive a timing challenge from a host device and enable authentication of the replaceable supply device by providing a challenge response in a challenge response time that falls within an expected time window, the logic to perform a mathematical calculation in response to the timing challenge, wherein the calculation yields the challenge response within the expected time window.