Patents by Inventor David K. Chin

David K. Chin 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).

  • Methods and apparatus performing hash operations in a cryptography accelerator
    Patent number: 8315381
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: November 20, 2012
    Assignee: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • Encryption processor for performing accelerated computations to establish secure network sessions connections
    Patent number: 7509486
    Abstract: Methods and apparatus for an encryption processor for performing accelerated computations to establish secure network sessions. The encryption processor includes an execution unit and a decode unit. The execution unit is configured to execute Montgomery operations and including at least one adder and at least two multipliers. The decode unit is configured to determine if a square operation or a product operation needs to be performed and to issue the appropriate instructions so that certain multiply and/or addition operations are performed in parallel in the execution unit while performing either the Montgomery square or Montgomery product operation.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: March 24, 2009
    Assignee: Broadcom Corporation
    Inventors: David K. Chin, Vojin G. Oklobdzija, Aamir Farooqui
  • Methods and apparatus performing hash operations in a cryptography accelerator
    Publication number: 20090028326
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Application
    Filed: July 1, 2008
    Publication date: January 29, 2009
    Applicant: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • Methods and apparatus for performing hash operations in a cryptography accelerator
    Patent number: 7400722
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Grant
    Filed: December 24, 2002
    Date of Patent: July 15, 2008
    Assignee: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • Methods and apparatus for performing hash operations in a cryptography accelerator
    Publication number: 20030185391
    Abstract: Methods and apparatus are provided for implementing a cryptography accelerator for performing operations such as hash operations. The cryptography accelerator recognizes characteristics associated with input data and retrieves an instruction set for processing the input data. The instruction set is used to configure or control components such as MD5 and SHA-1 hash cores, XOR components, memory, etc. By providing a cryptography accelerator with access to multiple instruction sets, a variety of hash operations can be performed in a configurable cryptographic accelerator.
    Type: Application
    Filed: December 24, 2002
    Publication date: October 2, 2003
    Applicant: Broadcom Corporation
    Inventors: Zheng Qi, Ronald Squires, Mark Buer, David K. Chin
  • High-temperature superconducting josephson devices having a barrier layer of a doped, cubic crystalline, conductive oxide material
    Patent number: 5627139
    Abstract: A HTSC Josephson device wherein the barrier layer is a cubic, conductive material.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: May 6, 1997
    Assignee: The Regents of the University of California
    Inventors: David K. Chin, Theodore Van Duzer