Back to results
US 10,372,898 B2Granted
Protecting data in memory of a consumable product
AssigneeHewlett-Packard Development Company, L.P.
InventorsPaul L. Jeran, Stephen D. Panshin, Jefferson P. Ward
Life of this patent
Estimating the term…
Abstract
A non-transitory memory storing a digital signature of a consumable product where the digital signature indicates that an identifier and host device setting data are from a trusted source.
Claims19
A non-transitory memory for a consumable product, the memory comprising:
- a non-transitory data storage device;
- an interface for a printing device to interface the data storage device with a host printing device when the consumable product is installed in the host printing device;
- and
- a digital signature of a consumable product on the data storage device, where the digital signature indicates that an identifier and host device setting data on the data storage device are from a trusted source, wherein the host device setting data comprises a setting for operation of the host printing device.
1 more element
A method comprising:
- upon installation of a consumable product in a host device, accessing a non-transitory memory with the consumable product for a stored digital signature of the consumable product;
- verifying the digital signature with a signature scheme that provides additional bit space in the signature in which host setting data is contained;
- retrieving the host setting data from the verification of the digital signature;
- and
- applying the host setting data to the host device, wherein the host device setting data comprises a setting for operation of the host device.
2 more elements
A consumable product, comprising:
- a consumable component used in operation of a host device, the consumable product packaging the consumable component for installation in the host device, making the consumable component available to the host device;
- an electronic circuit with the consumable component, the circuit comprising all of:
- a memory device;
- an interface, connected to the memory device, to communicate with the host device when the consumable product is installed in the host device;
- a storing engine to store a digital signature in the memory where the digital signature indicates that an identifier and host functional data are from a trusted source, the host functional data providing an address or link to data accessible by the host device;
- and
- an exchanging engine to exchange the host functional data with the host device during an authentication session.
4 more elements
Dependencies are inferred from the claim text.