Hewlett-packard Development Company, L.p.

Laurent Pizot

Sudhindra Venkatesh Kulkarni

Jefferson Patrick Ward

Stephen D Panshin

Jacob Grundtvig Refstrup

Rowdy Kelvin Webb

Venugopal Kumarahalli Srinivasmurthy

Pankaj Anand

Rodney Hofer

Pankaj Sharma

Thalia Laing

Loren D Chapple

Mark A Fahrenkrug

Deepak Ramachandran

John Cunningham

Nikhilesh Gargi

Paul L Jeran

Joseph W Yang

David B Novak

Gabriel Scott McDaniel

Harish B Kamath

Timothy P Blair

Rajesh Bhatia

Steven T Castle

Shane R Konsella

Roger Scott Twede

Shivaun Albright

Cooper G Urie

Honee L Mesa

Jojee Thomas Chackalackal

Kyle Mannari

Janine Louise Helms

Elijah Houle

Deny Joao Correa Azzolin

Ramesh Kavanapillil

Hitesh Amrutlal Bosamiya

Raviraj Avadhut Kandalgaonkar

Anurag Goyal

Kevin Pearson

Rajrajat Naik

Kyle Michel

Viswanatha Shankaranarayana

Kulkarni Sudhindra Venkatesh

Patrick O'Donnell

Matthew Tollestrup

Steven Schaaf Inch

Reddapa V Srinivas

Lee Jackson

Teresa M O'keeffe

Shawn C Kennedy

Todd Eric Blanchard

Amandeep Batra

A public key service determines a seed value used by a sending device to generate a one-time signature (OTS) private key that the sending device uses to digitally sign a message before sending the message to a receiving device. The public key service generates, based on the seed value, a public key used to authenticate the digitally signed message as having been sent by the sending device. The public key service receives a request for the public key from the receiving device, and in response sends the public key to the receiving device, such that the receiving device is able to authenticate the message.

Public key service for message authentication

A block to be added to a hash chain is generated. The block is for a message to be sent and includes a link hash of a prior block previously added to the hash chain. The prior block includes a public key corresponding to a private key to be used to digitally sign the block. The block includes a payload hash of a payload of the message, and a next public key corresponding to a next private key to be used to digitally sign a next block to be added to the hash chain after the block. The next block is for a next message to be sent after the message. The block is digitally signed with the private key and added to the hash chain. The link hash links the block to the prior block in the hash chain. The message is sent.

Hash chain of blocks of public keys for messages

Reprocessing of a replaceable supply component may include receiving from an encoding device and using an interface communicatively coupled to the encoding device, a request blob to reprocess a replaceable supply component. The method may include in response to cryptographically verifying the request blob, extracting from the request blob, a supply identifier and raw supply data. The method further includes using the supply identifier and raw supply data, generating a reprocess structure to append or amend original manufacturing data for the replaceable supply component, and providing a response blob to the encoding device, to designate the replaceable supply component as a reprocessed supply component.

Reprocessing of a replaceable supply component

In an example, a non-transitory computer readable storage medium may include instructions that when executed cause a computing device to generate a virtual device representation of an image forming apparatus on a cloud. Further, instructions cause the computing device to update the virtual device representation on the cloud with a configuration state of the image forming apparatus. Furthermore, instructions cause the computing device to analyze the updated virtual device representation to determine whether the image forming apparatus is compliant with a stored policy. Further, instructions cause the computing device to initiate, via the virtual device representation, a remediation action to bring the image forming apparatus to compliance based on the determination.

Compliance determination of image forming apparatuses

A method comprises receiving, at a server from a communications-enabled device that includes processing circuitry, a request for providing a user session correlated with a user identifier (ID) and a target appliance. The method further includes in response to the request for the requested user session: retrieving a user attribute from a user-ID database that stores user ID information for a plurality of user accounts, and retrieving an appliance attribute from an appliance-ID database that stores appliance ID information; and correlating the retrieved user attribute and appliance attribute with the requested user session for a user account from among the plurality of user accounts. The method further includes transferring the requested user session to the target appliance as a new user session that is spatial-temporal limited and that is without the target appliance using user login information.

Spatial-temporal limited user sessions

A data collector agent (DCA) connector component running on a cloud computing network signals to a device interfacing platform component that a work request is ready. The device interfacing platform component runs on the cloud computing network and interfaces a device located outside the cloud computing network to the cloud computing network. The work request is for the DCA connector component to perform in conjunction with the device. The DCA connector component establishes a communication session with the device via the device interfacing platform component as initiated by the device. The DCA connector component performs the work request in conjunction with the device by tunneling to the device through the established communication session.

Device data collector agent component on cloud computing network

Example implementations relate to secure messages for IoT devices. For example, a system for secure messages for IoT devices may include an IoT device coupled to a network including a plurality of web services. The IoT device may store a service certificate for each of the plurality of web services, generate a secure message for a web service among the plurality of web services using the stored service certificate for the web service, and send the secure message to the web service without first establishing a connection between the IoT device and the web service.

Secure messages for internet of things devices

A combination of physical and logical components of an apparatus to establish a persistent connection over a network with a source that is provided with or part of a job service. The components extract a job instruction embodied in a first communication that is received from the source over the persistent connection, without the apparatus having provided a request for the first communication. Based on the job instruction, the components send a request to the job service for job data when the job service is able to process job data for a corresponding job, without the apparatus polling the job service or waiting for the job service to receive the corresponding job.

Device messaging for processing jobs over a network

Remotely authenticating a device includes generating authentication data and secret key data in a controlled environment, sending the authentication data to a remote authentication engine, and sending the secret key data to a personalization engine to apply the secret key data to a device after sending the authentication data to the remote authentication engine such that the remote authentication engine has an ability to authenticate the device.

Remotely authenticating a device

A system for authenticating a user is disclosed herein. An example includes a printer and a printer states code. The example also includes a processor and a support center. Other features of the system are disclosed herein, as are an example of authentication method and a non-volatile storage medium.

Authentication utilizing encoded data

A service discovery request is received from a printing device at a cloud server. The request includes profile information for the printing device. In response to the request, service information is provided to the printing device. The service information includes location information and an encryption scheme for retrieving a list of services available to the printing device.

Device service discovery

A pin associated with an identification number (ID) of a subscription device and a sequence number of a credit is output to a user. The pin is inputted to the subscription device. The subscription device is to allow the user to use a resource up to an extension value stored in the subscription device, if the entered pin correlates to a stored pin of the subscription device.

Use of resource up to extension value by subscription device

Example embodiments relate to updating key pairs based on digital signature states. In example embodiments, first credentials that are generated using a first private key may be sent to a user computing device, where the first private key is associated with a first public key. At some stage, second credentials that are generated using the first private key and a second private key are sent to the user computing device, where the second credentials specify that the first private key is deprecated, and where the user computing device authenticates the second credentials using the first public key. In response to receiving confirmation that a firmware upgrade is installed a number of user computing devices such that an upgrade threshold is satisfied, the first private key may be deactivated. The firmware upgrade may be provided in response to receiving a firmware upgrade request from the user computing device.

Key pair updates based on digital signature states

A plurality of printing devices are connected to a cloud server via a persistent connection. The cloud server identifies at least one inactive printing device and provides the at least one inactive printing device with non-persistent connection information via the persistent connection. A polling message is received from the at least one inactive printing device via the non-persistent connection. The cloud server indicates when the at least one inactive printing device is to return to an active state.

Printer-server connections

A printing device is registered at a cloud server and a secure connection is established with the printing device. A subscription packet is sent to the printing device. The subscription packet specifics at least one event to be reported by the printing device. A notification that indicates an occurrence of the at least one event is received from the printing device.

Printer event subscription

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Camas, WA, United States of America

Laurent Pizot