公开(公告)号：WO2021118573A1

公开(公告)日：2021-06-17

申请号：PCT/US2019/065964

申请日：2019-12-12

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： LAING, Thalia May ,  SCHIFFMAN, Joshua Serratelli ,  HUSSON, Remy

IPC: H04L9/14 ,  H04L9/30

Abstract: In an example, a method includes receiving a signed message generated by a computing device associated with a private key and a public key. The signed message includes an input message signed with the private key. The method further includes generating, using processing circuitry, a candidate public key based on the input message and the signed message using a public key recovery procedure. The method further includes determining the public key associated with the computing device based on an indication as to whether or not the candidate public key corresponds to the public key associated with the computing device.

公开(公告)号：WO2021086362A1

公开(公告)日：2021-05-06

申请号：PCT/US2019/059044

申请日：2019-10-31

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： HUSSON, Remy ,  BALINSKY, Helen

IPC: G06Q10/06 ,  G06F16/00 ,  G06F21/60

Abstract: In an example there is provided a method for certifying transactions of a workflow for a workflow comprising a set of transactions and a permitted order of execution of transactions. The method comprises generating verification data in response to a request from a client to certify a transaction of the workflow on the basis of a secure ledger where the verification data certifies the validity of the secure ledger. The method further comprises communicating the verification data to the client. The secure ledger is determined on the basis of workflow transactions.

公开(公告)号：WO2020081076A1

公开(公告)日：2020-04-23

申请号：PCT/US2018/056383

申请日：2018-10-17

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： HUSSON, Remy ,  SCHIFFMAN, Joshua Serratelli ,  LAING, Thalia

IPC: G06F16/00 ,  G06F21/64 ,  H04L29/06

Abstract: An apparatus, being a network entity of a computer network is provided. The apparatus comprises a communication module to receive and to send information on a blockchain. Moreover, the apparatus comprises a query module to obtain from a master chain of the blockchain a rule for a first shard and a second shard of the blockchain with respect to a smart contract. Furthermore, the query module is to obtain information on the smart contract from the first shard or from the second shard depending on the rule. Moreover, the query module is to output the information on the smart contract.

公开(公告)号：WO2018194568A1

公开(公告)日：2018-10-25

申请号：PCT/US2017/028156

申请日：2017-04-18

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： HUSSON, Remy ,  BALDWIN, Adrian ,  ELLAM, Daniel

IPC: G06F9/06 ,  G06F21/57

Abstract: In an example, a machine-readable medium includes instructions that, when executed by a processor, cause the processor to order, as part of an execution of a trusted process, a plurality of processes into a sequence comprising a first process, at least one intermediate process, and a last process. The machine-readable medium may further comprise instruction to cause the processor to generate, as part of an execution of the first process, a value based on a code portion of the process following the first process in the sequence, and to generate, as part of an execution of each intermediate process, a respective value based on the value generated by the process preceding the intermediate process in the sequence and based on a code portion associated with the process following the intermediate process in the sequence.

公开(公告)号：WO2021112860A1

公开(公告)日：2021-06-10

申请号：PCT/US2019/064749

申请日：2019-12-05

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： SUCH VICENTE, Alberto ,  ABAD PEIRO, Josep ,  BALINSKY, Helen ,  HUSSON, Remy

IPC: G06F21/10 ,  G06F21/62 ,  G06Q50/04

Abstract: In some examples, there is provided a method, comprising receiving data encrypted using an encryption key, querying a digital ledger server for rights associated with the received data, recording, at the digital ledger server, a request to perform an access/process operation on the data, decrypting the data using a decryption key, and determining, using the rights, whether a rendering device is authorised to access and/or process the data.

公开(公告)号：WO2020145967A1

公开(公告)日：2020-07-16

申请号：PCT/US2019/012918

申请日：2019-01-09

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： BALINSKY, Helen ,  ABAD PEIRO, Josep ,  HUSSON, Remy

IPC: G06Q10/06

Abstract: In an example, there is provided a method for creating a workflow, comprising workflow tasks. The method comprises assigning workflow tasks to workers, according to an access control policy. The method comprises encoding as a transaction to a secure ledger that access to the workflow is granted to a worker to perform a workflow task and enforcing access control on execution of the workflow task according to the transaction encoded to the secure ledger.

公开(公告)号：WO2020117232A1

公开(公告)日：2020-06-11

申请号：PCT/US2018/064131

申请日：2018-12-05

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： SCHIFFMAN, Joshua Serratelli ,  HUSSON, Remy ,  LAING, Thalia May

IPC: G06F21/62

Abstract: A method comprising: receiving, by a blockchain maintainer, a client request for a cryptographic token, the cryptographic token to allow the client to access a particular service from a service provider; processing, by the blockchain maintainer, the request using a blockchain smart contract to determine if the client request is valid; if the client request is determined to be valid, including the client request in the blockchain; generating, by a token issuer, the requested cryptographic token in response to inclusion of the valid client request in the blockchain; and issuing the generated cryptographic token to the client.

公开(公告)号：WO2022093256A1

公开(公告)日：2022-05-05

申请号：PCT/US2020/058108

申请日：2020-10-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： BALINSKY, Helen ,  ABAD PEIRO, Josep ,  HUSSON, Remy ,  JORDANEY, Roberto

IPC: G06F9/50 ,  G06Q30/06

Abstract: A method and apparatus for processing a set of secure ledger transaction requests are provided. The method comprises determining a partition of the set of transaction requests into a first subset and second subset and provisioning computational resources having a first computational characteristic for processing the first subset of transaction requests and computational resources having a second computational characteristic, different from the first computational characteristic, for processing the second subset of transaction requests. The partition optimizes a performance parameter for processing the transaction requests.

公开(公告)号：WO2019209272A1

公开(公告)日：2019-10-31

申请号：PCT/US2018/029153

申请日：2018-04-24

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： BALINSKY, Helen ,  SUCH VICENTE, Alberto ,  DALTON, Chris ,  HUSSON, Remy

IPC: G06F3/12 ,  G06F21/62

Abstract: In an example, print apparatus comprises a security services engine to perform cryptographic services. The security services engine may receive a request for a cryptographic service and validate that the request is an authorised request. On successful validation, the security services engine may perform the cryptographic service by acquiring a first key, acquire an associated first key identifier and may output the first key identifier.

公开(公告)号：WO2019203790A1

公开(公告)日：2019-10-24

申请号：PCT/US2018/027794

申请日：2018-04-16

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： SCHIFFMAN, Joshua Seratelli ,  HUSSON, Remy ,  BALINSKY, Helen

IPC: G06F21/64

Abstract: A method, in examples, comprises appending multiple workflow transactions to a distributed digital ledger, verifying a sequence of the multiple workflow transactions using verification criteria, generating a certification transaction attesting to the verified sequence of multiple workflow transactions according to a visibility policy, collating multiple certification transactions for respective sequences of workflow transactions, and generating a chained certification transaction.