REPLACEABLE ITEM AUTHENTICATION Russian patent published in 2018 - IPC G06F21/44 H04L9/32 

FIELD: electrical communication engineering.

SUBSTANCE: invention relates to the field of printing data. Non-transitory computer-readable data storage medium storing computer-executable code executable by a replaceable item to perform a method comprising, in response to receiving a request for an identity of the replaceable item from a host device to which the replaceable item has been connected, selecting the identity from a plurality of replaceable item identities stored within the replaceable item, the replaceable item storing a plurality of authentication values for each replaceable item identity, sending the selected identity to the host device, after sending the selected identity, and in response to receiving a request for an authentication value from the host device, determining whether the replaceable item stores the requested authentication value for the selected identity and in response to determining that the replaceable item stores the requested authentication value for the selected identity, sending the requested authentication value for the selected identity to the host device.

EFFECT: technical result is providing authentication of a replaceable item.

20 cl, 7 dwg