Patents by Inventor Tat Keung Chan
Tat Keung Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11929995Abstract: A method is provided for securely providing data for use in a consumer electronics device having a processor performing instructions defined in a software image. The method includes receiving the data encrypted according to a global key, further encrypting the data according to a device-unique hardware key, storing the further encrypted data in a secure memory of the consumer electronics device, providing the global key to a whitebox encoder for encoding according to a base key to generate a whitebox encoded global key, and transmitting the software image to the consumer electronics device for storage in an operating memory of the consumer electronics device, the software image having a whitebox decoder utility corresponding to the whitebox encoder and the whitebox encoded global key.Type: GrantFiled: September 16, 2022Date of Patent: March 12, 2024Assignee: ARRIS ENTERPRISES LLCInventors: Brian D. Mullen, Alexander Medvinsky, Tat Keung Chan
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Patent number: 11882224Abstract: A method for signing data such as software images is provided that uses modules executable by a generic client to sign hashes of the software images rather than the images themselves. The method avoids both the requirement for new or updated client software and the uploading of full software images to the signing system. This approach uses a generic client that requests and downloads processing modules from the signing system to perform the pre-processing operations in signing software images, as well as optionally for post-processing operations.Type: GrantFiled: September 8, 2021Date of Patent: January 23, 2024Assignee: ARRIS Enterprises LLCInventors: Tat Keung Chan, Ting Yao, Jason A. Pasion
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Publication number: 20230393831Abstract: A method and apparatus for distributing a software release is disclosed. The method comprises accepting, in a software distribution system, a software download configuration from a software download system administrator, the software download configuration comprising: first information defining software post processing, the software post processing identifying: a software image to be included in the software release; and a post processing operation to be performed on the software image, the post processing operation associated with a post processing configuration specifying post processing operation parameters defining how the post processing operation is performed by the post processing server; and second information defining a restriction on distribution of the software release.Type: ApplicationFiled: June 2, 2023Publication date: December 7, 2023Applicant: ARRIS Enterprises LLCInventors: Alexander MEDVINSKY, Xin QIU, Tat Keung CHAN, Jinsong ZHENG, Ting YAO
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Publication number: 20230370270Abstract: A method and apparatus, and system for providing device credentials to a plurality of devices is disclosed.Type: ApplicationFiled: May 10, 2023Publication date: November 16, 2023Applicant: ARRIS Enterprises LLCInventors: Alexander MEDVINSKY, Xin QIU, Ting YAO, Jason PASION, Oscar JIANG, Rafie SHAMSAASEF, Tat Keung CHAN
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Publication number: 20230315858Abstract: A system is provided for configurably signing a secure data image that includes software code that interprets cryptographic atomic code. In the system, a code signing engine includes an interpreter that interprets atomic code signing operations presented in a recipe defined by a system administrator according to configuration parameter values supplied with the input image.Type: ApplicationFiled: May 8, 2023Publication date: October 5, 2023Applicant: ARRIS Enterprises LLCInventors: Tat Keung Chan, Ting Yao, Alexander Medvinsky
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Publication number: 20230269066Abstract: A system and method for provisioning confidential data such as unique credentials is described. The technique initializes a whitebox cryptographic software module to a particular PKI client to soft-lock whitebox cryptographic operations to the particular PKI client and uniquely encrypting the credentials with a node-locking key (NLK) derivable from a digital certificate.Type: ApplicationFiled: February 9, 2023Publication date: August 24, 2023Applicant: ARRIS Enterprises LLCInventors: Tat Keung CHAN, Alexander MEDVINSKY, Rafie SHAMSAASEF, Fariba BAREZ
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Publication number: 20230269099Abstract: A method and apparatus for revoking and replacing digital certificates issued by distributed servers is disclosed. An architecture in which issued certificates from distributed factory and field provisioning servers are gathered into a centrally managed certificate authority which manages the full certificate lifecycle. Revocation and rekey approvals are performed through this central certificate authority, while the resulting revocation status and rekey approvals are made available for consumption by those same distributed servers.Type: ApplicationFiled: February 17, 2023Publication date: August 24, 2023Applicant: ARRIS Enterprises LLCInventors: Alexander MEDVINSKY, Ting YAO, Tat Keung CHAN, Jason PASION, Jinsong ZHENG, Xin QIU
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Publication number: 20230216662Abstract: A system and method for providing a providing security credential is disclosed. In one embodiment, the method comprises accepting a request to generate at least one key in an online data signing system; generating, in a hardware security module communicatively coupled to the online data signing system, a first key K1 as a temporary object; encrypting, by the hardware security module, the first key K1 according to a wrapping key Kw to produce an encrypted first key EKw[K1]; storing the encrypted first key; and providing a second key K2 associated with the first key K1 to a user device communicatively coupled to the online data signing system.Type: ApplicationFiled: December 29, 2022Publication date: July 6, 2023Applicant: ARRIS Enterprises LLCInventors: Tat Keung Chan, Alexander Medvinsky, Ting Yao
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Publication number: 20230198968Abstract: A system and method for authenticating a user device is disclosed. In one embodiment, the method comprises: transmitting a request for credentials from the user device, wherein the request comprises a user device identifier and the credentials comprise an asymmetric key pair having a public key and an associated private key, the private key being encrypted; receiving the credentials in the user device, the credentials comprising the encrypted private key and the public key; retrieving quick response (QR) code data associated with the user device identifier from a QR code data directory, the QR code data generated from the public key and stored in the QR code data directory according to the user device identifier by a secure online service; extracting the public key from the QR code data; and establishing an authenticated and encrypted communication session with the user device according to the extracted public key.Type: ApplicationFiled: December 15, 2022Publication date: June 22, 2023Applicant: ARRIS Enterprises LLCInventors: Alexander Medvinsky, Nicol C. P. So, Tat Keung Chan, Greg Nakanishi
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Patent number: 11681808Abstract: A system is provided for configurably signing a secure data image that includes software code that interprets cryptographic atomic code. In the system, a code signing engine includes an interpreter that interprets atomic code signing operations presented in a recipe defined by a system administrator according to configuration parameter values supplied with the input image.Type: GrantFiled: January 6, 2022Date of Patent: June 20, 2023Assignee: ARRIS Enterprises LLCInventors: Tat Keung Chan, Ting Yao, Alexander Medvinsky
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Patent number: 11677548Abstract: A system is provided for distribution of device key sets over a network in a protected software environment (PSE). In the system, a client device includes a connection interface for receiving a crypto hardware (CH) token belonging to a user, untrusted software, a quoting enclave, and a PSE for generating a provisioning request for a device key set. An attestation proxy server (APS) receives the provisioning message using a first network connection, and transmits the provisioning message to an online provisioning server (OPS) using a second network connection. The OPS constructs a provisioning response and an encrypted device key set, and delivers the provisioning response to the untrusted software using the first and second network connections. The PSE decrypts the encrypted device key set to obtain the device key set, re-encrypts the device key set with a local chip-specific key, and stores the re-encrypted device key set.Type: GrantFiled: June 23, 2021Date of Patent: June 13, 2023Assignee: ARRIS Enterprises LLCInventors: Alexander Medvinsky, Jinsong Zheng, Jason A. Pasion, Xin Qiu, Tat Keung Chan, Eric Eugene Berry, Michael Ryan Pilquist, Douglas M. Petty
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Patent number: 11626975Abstract: In a system comprising an customer providing a service to a plurality of client devices, a method and system for providing an customer-specific digital certificate to a client device of the plurality of client devices is disclosed. The method comprises receiving, in an intermediate certificate authority, a pre-generated digital certificate and an encrypted client device private key encrypted according to a private key encryption key PrKEK, receiving, from the client device, a request for the customer-specific digital certificate, the request comprising at least one of client device identifying information and information identifying the customer, the request signed according to a pre-provisioned client device digital certificate, and transmitting the customer-specific digital certificate and the encrypted client device private key to the client device.Type: GrantFiled: January 15, 2021Date of Patent: April 11, 2023Assignee: ARRIS Enterprises LLCInventors: Alexander Medvinsky, Tat Keung Chan, Xin Qiu, Jason A. Pasion, Ting Yao, Shanthakumar Ramakrishnan
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Patent number: 11616994Abstract: A method and system are provided for updating an elliptic curve (EC) base point G, with the EC basepoint used in encryption and coding of video data. A candidate base point G is generated that includes additional data used for validation purposes and checked as a valid base point before transmission and use.Type: GrantFiled: May 11, 2021Date of Patent: March 28, 2023Assignee: ARRIS Enterprises LLCInventors: Tat Keung Chan, Alexander Medvinsky, Eric J. Sprunk
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METHOD AND APPARATUS FOR FLEXIBLE CONFIGURATION MANAGMENT USING EXTERNAL IDENTITY MANAGEMENT SERVICE
Publication number: 20230053907Abstract: To address the requirements described above, this document discloses a system and method for performing an action on at least one resource node of a hierarchical organization of resource nodes is disclosed. The system utilizes an external Identity Provider that provide more flexible authentication and authorization services, and leverages such services with secure server such as an on-line data signing service to provide flexible permission management.Type: ApplicationFiled: August 19, 2022Publication date: February 23, 2023Applicant: ARRIS Enterprises LLCInventors: Tat Keung CHAN, Alexander MEDVINSKY -
Publication number: 20230013112Abstract: A method is provided for securely providing data for use in a consumer electronics device having a processor performing instructions defined in a software image. The method includes receiving the data encrypted according to a global key, further encrypting the data according to a device-unique hardware key, storing the further encrypted data in a secure memory of the consumer electronics device, providing the global key to a whitebox encoder for encoding according to a base key to generate a whitebox encoded global key, and transmitting the software image to the consumer electronics device for storage in an operating memory of the consumer electronics device, the software image having a whitebox decoder utility corresponding to the whitebox encoder and the whitebox encoded global key.Type: ApplicationFiled: September 16, 2022Publication date: January 19, 2023Inventors: Brian D. MULLEN, Alexander MEDVINSKY, Tat Keung CHAN
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Publication number: 20230007479Abstract: Systems and methods for PKI certificate and key allocations to wireless base station radio units are provided. In one embodiment, a system for obtaining PKI credentials for a remote unit for a wireless base station, the system comprises: a remote unit, the remote unit configured to implement a radio frequency (RF) interface; a gateway coupled to the remote unit, the gateway communicatively coupled to an online provision service (OPS) certificate authority (CA); wherein the gateway is configured to generate an AuthToken unique to the remote unit, wherein the remote unit is configured to request a RU digital certificate and private key from an OPS CA based on the AuthToken.Type: ApplicationFiled: June 30, 2022Publication date: January 5, 2023Applicant: CommScope Technologies LLCInventors: Shanthakumar Ramakrishnan, Prashanth Venkatesh, Tat Keung Chan, Devaraj Sambandan
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Publication number: 20230007474Abstract: In one embodiment, a method for secure virtualized wireless base station orchestration comprises: obtaining a node certificate and private key from a global CA defining a PKI signing certificate/private key; obtaining a sub CA certificate/private key from either an edge cloud node cluster or the global CA, using a PKI request signed using the PKI signing certificate/private key; establishing an orchestration access IPsec tunnel to a cloud comprising edge cloud orchestration functions; utilizing the orchestration functions to deploy on the node virtualized entities comprising VNFs of a wireless base station; obtaining at least one VNF certificate and private key for the VNFs from the global CA using a PKI request signed using the global certificate/private key; utilizing the VNF certificate/private key, establishing IPsec tunnels between the VNFs and a wireless network services operator network and/or to an OAM secure gateway for a DMS.Type: ApplicationFiled: July 1, 2022Publication date: January 5, 2023Applicant: CommScope Technologies LLCInventors: James J. Ni, Shanthakumar Ramakrishnan, Tat Keung Chan, Alexander Medvinsky, Prashanth Venkatesh, Devaraj Sambandan
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Publication number: 20220417032Abstract: A system and method for signing or encrypting data is disclosed. The method comprises providing, from a first device, data signing information for storage in a first database, the data signing information having at least one key comprising a signing key Ks, wherein the signing key Ks is encrypted according to a wrapping key Kw before storage in the first database; receiving a data signing request comprising a representation of the data; retrieving, in a second device communicatively coupled to an hardware security module (HSM) storing the wrapping key Kw, the stored data signing information from a second database, wherein at least a portion of the second database including the stored signing information is pushed from the first database to the second database; decrypting, in the HSM, the encrypted signing key according to the wrapping key Kw stored in the HSM to recover the signing key Ks; and signing the representation of the data according to the recovered signing key.Type: ApplicationFiled: June 23, 2022Publication date: December 29, 2022Applicant: ARRIS Enterprises LLCInventors: Alexander MEDVINSKY, Tat Keung CHAN, Ting YAO
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Publication number: 20220407690Abstract: A method is provided for generating a key ladder for securely communicating between a first device and a second device using a first device symmetric key and a chip-unique private key. The method includes generating a second processor-specific first device symmetric key from a first processor-specific first device symmetric key and a first identifier (CPU_ID), generating a chip-unique first device application private key (CUAPrK) from a second identifier and the second processor-specific first device symmetric key, generating a chip-unique first device application public key (CUAPuK) from the chip-unique first device application private key (CUAPrK), and transmitting the chip-unique first device application public key (CUAPuK) and an identifier of the processor to the second device.Type: ApplicationFiled: August 25, 2022Publication date: December 22, 2022Applicant: ARRIS Enterprises LLCInventors: Alexander Medvinsky, Tat Keung Chan
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Publication number: 20220385954Abstract: A method and system are provided for updating an elliptic curve (EC) base point G, with the EC basepoint used in encryption and coding of video data. A candidate base point G is generated that includes additional data used for validation purposes and checked as a valid base point before transmission and use.Type: ApplicationFiled: May 11, 2021Publication date: December 1, 2022Inventors: Tat Keung Chan, Alexander Medvinsky, Eric J. Sprunk