Hewlett-Packard Development Company, L.p.

Hewlett-Packard Company

Chris Richard Gunning

J Sean Fresk

Dellas G Frederiksen

Paul L Jeran

Erik D Ness

Marvin D Nelson

Honee L Mesa

Theresa A Burkes

Shivaun Albright

Douglas J Mellor

Lisa Johnson

Scott D Bonar

Shane Konsella

Travis Myron Cossel

James H Bigelow

Raymond S Kennedy

Perry Victor Lea

Paul K Mui

David Plaquin

Joshua Serratelli Schiffman

Randall Edward Grohs

Shane R Konsella

Russell A Mendenhall

Dana A Jacobsen

Elliot Lee Klosterman

Michael B Lloyd

Richard M Dow

Cooper G Urie

Eugene Cohen

Mark A Fahrenkrug

Brian L Watts

Steven Robert Folkner

Daniel A Donegan

Steven J Claiborne

Mark E Hodges

Thomas Stanley Gale

Craig L Miller

Robert J Lavey

Steve Claiborne

Pierre Belgarric

Brandon R Ashey

Theresa L McGuire

Michael Tang

Scott S Lee

John Mauzey

Terry-Lee M Fritz

Nolan Glen Rosenbaum

Jamie Escandon

Scott W Ahistrom

Sidney R Reed

Jim F Adams

Jitendra Kavathekar

Cheryl S Freeman

Secure code image delivery may include encrypting, using an invariant content encryption key, an invariant portion of a code image for a set of electronic devices to generate an encrypted invariant potion of the code image. A first variant of a variant portion of the code image may be encrypted using a first variant content encryption key to generate a first encrypted variant portion. A second variant of a variant portion of the code image may be encrypted using a second variant content encryption key to generate a second encrypted variant portion. A code image bundle may be generated including the encrypted invariant portion, the first encrypted variant portion, and the second encrypted variant portion.

Secure code image distribution

An IC comprising functional circuit to perform primary functions of the IC is provided. The functional circuit is to enable electrical signals to propagate through it within a timing constraint of the functional circuit. The IC comprises at least one canary circuit used for detecting glitch attacks on the circuit. Electrical signals are to propagate through the canary circuit(s) within a defined timing constraint of the canary circuit(s). The canary circuit is to provide a signal path designed such that in the event of a timing constraint of the functional circuit(s) is violated due to a glitch attack, also the timing constraint of the canary circuit(s) is violated.

Integrated circuit(s) with anti-glitch canary circuit(s)

Examples associated with firmware encryption are described. One example device firmware includes a base module. The base module controls a base function of the device. The device firmware also includes a first encrypted module that modifies a first function of the device. The first encrypted module is inactive until decrypted. A decryption module decrypts the first module using a first encryption key and controls activation of the first encrypted module.

Firmware module encryption

Example implementations relate to code package variants. For example, a system according to the present disclosure, may include a client server, a development environment, a digital signing environment, and a central server. The development environment may generate a plurality of variants of a first portion of a code package. The digital signing environment may create a distinct digital signature for each variant of the plurality of variants of the first portion of the code package with a same second portion of the code package. The central server may transmit to the client server a complete code package comprising a variant of the plurality of variants of the first portion of the code package along with the second portion of the code package and a corresponding digital signature. The central server may transmit to the client server an incomplete code package comprising a remainder of the plurality of variants of the first portion of the code package, without the second portion of the code package, and digital signatures of each of the remainder of the plurality of variants.

Code package variants

Examples associated with printer authentication are described. One example print container includes a space for a supply of print material and an interface for delivering the print material to a printer to which the print container is connected. An authentication module provides an authentication signal to a decrypted module embedded in firmware of the printer. The decrypted firmware module is kept in an encrypted state until decrypted by a decryption module embedded in the firmware of the printer. The decrypted module is decrypted after the decryption module receives a decryption key after release of the printer.

Printer authentication

Examples associated with printer firmware encryption are described. One example printer includes a base firmware module. The base firmware module controls a base function of the printer. The printer also includes a first encrypted firmware module that modifies a first function of the printer. The first encrypted module is inactive until decrypted. A firmware decryption module decrypts the first encrypted module upon receiving a first encryption key.

Printer firmware encryption

An authenticated print session allows a mobile device to authenticate an encrypted file for printing at a print device sent by a base computer. The base computer authorizes the mobile device to release printing when in close proximity to the print device. The authenticated print session uses the mobile device to authenticate the owner of the encrypted file, and to authorize the release of the file at the print device over a non-secure communication channel.

Mobile device authenticated print

Examples disclosed herein relate to wireless communication of a user identifier and encrypted time-sensitive data. Examples further include wireless communication of an authentication token including a user identifier and encrypted time-sensitive data. Examples further include interaction with a remote authentication service. Examples further include utilization of near field communication (NFC).

Wireless communication of a user identifier and encrypted time-sensitive data

In an exemplary device implementation, the device includes: a scanner capable of scanning a scanning target to produce an electronic image of the scanning target; and a printer capable of printing an image of the scanning target on a media, the printer including a print engine; wherein the device is adapted to overlap the scanning of the scanning target with preparation of the print engine for printing.

Printing preparation

An exemplary device implementation includes: a manager that is capable of monitoring a process for preparing a page for printing; and a print engine that is capable of printing the page after the process for preparing the page for printing is complete; wherein the device is adapted to temporally overlap the process for preparing the page for printing with preparation of the print engine for printing. An exemplary method implementation includes actions of: beginning processing of a page of a printing job; providing at least one command to a print engine responsive to at least one time remaining estimate for the processing of the page of the printing job prior to completion of the processing of the page of the printing job; and changing a state of the print engine responsive to the providing of the at least one command to the print engine.

Page processing and print engine management

A system, method, and a program embodied on a computer readable medium for performing authentication tasks is provided. In one embodiment, the system comprises a number of authentication agents, each of the authentication agents authenticating at least one user parameter by performing at least one authentication task. The system also includes an authentication manager that requests each of the authentication agents to authenticate an unauthenticated user parameter.

Extensible authentication system and method

A system, method, and program embodied in a computer readable medium are provided for parameter authentication. In one embodiment, the method comprises the steps of examining an authenticated parameter table to determine whether an unauthenticated user parameter is listed therein, and, bypassing authentication of the unauthenticated user parameter if the unauthenticated user parameter is listed in the authenticated parameter table.

Parameter verification in an authentication system and method

A device and method of scanning a job on a document-processing device when a print path is not available. The method includes initiating a job and determining that a printer job channel is not available. The method further includes scanning the job and spooling the job to a mass storage device. The method also includes storing the job in the mass storage device until the printer job channel becomes available.

Apparatus and method for scanning a copy job when a print path is not available

Methods and systems for processing image data in connection with peripheral units such as laser printers are described. In one embodiment, an image pipeline is queried to determine at least one constraint which affects the image data provided to the image pipeline from a source of image data. If appropriate, the constraint(s) is imposed on the image data to provide constrained image data. After the constraint is imposed on the image data, the constrained image data is provided from the source to the image pipeline for processing into a page-arranged output. In another embodiment, image data which is provided by a source is stored in a first buffer. A handle is assigned to the image data. The handle is passed through at least a portion of the image pipeline. After such passing, at least a portion of the image data which was stored in the first buffer is copied directly into at least one strip buffer, with such copying being the first copying of the image data after the storing thereof in the first buffer. Other embodiments are described.

Methods and systems for processing image data

The present invention includes an image forming system and method of operating an image forming system. According to one aspect, the present invention provides an image forming system including an accessory device including a processor configured to control at least one operation of the accessory device; an image forming device coupled with the accessory device and including a storage device; and wherein the storage device of the image forming device is configured to store operational data useable by the accessory device, and the image forming device is configured to output the operational data and the accessory device is configured to receive the operational data, and the processor is configured to control the at least one operation of the accessory device responsive to the operational data.

Image forming system and method of operating an image forming system

Growing community of inventors

Boise, ID, United States of America

Chris Richard Gunning