Methods and systems for determining the authenticity of a component

A method of determining trust in a supply item in an imaging device for verifying other supply items installed in the imaging device via at least two or more algorithms, wherein the imaging device has a plurality of installed supply items, the method comprising:

• sending, by a controller of the imaging device, challenge data and an indication of the at least two or more algorithms to a candidate supply item, the candidate supply item being one of the installed supply items,
• receiving, by the controller, a challenge response from the candidate supply item, and
• determining, by the controller, a status of the challenge response, the status being verified or unverified, wherein when the controller determines that the received challenge response is a correct output of each of the at least two or more algorithms when the challenge data is input to the at least two or more algorithms, the status is determined as verified, and
• wherein when the status of the challenge response from the candidate supply item is verified, it is determined that the candidate supply item is trusted for the at least two or more algorithms, and the controller is configured to determine if all installed supplies are trusted for all algorithms in an initial list of the at least two or more algorithms.