Patents by Inventor Huibert Den Boer

Huibert Den Boer 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).

  • Patent number: 7079651
    Abstract: A method and apparatus for cryptographically converting a digital input data block into a digital output data block. The apparatus has an input for supplying the input data block and a further input for supplying a code conversion digital key K1. Cryptographic processing merges a selected part M1 of the digital input data block with the key K1 to produce a data block B1 that is non-linearly dependent on M1 and K1. The merging is performed in one sequentially inseparable step. The digital output block is derived from a selected part of the data block B1.
    Type: Grant
    Filed: August 8, 2001
    Date of Patent: July 18, 2006
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Huibert Den Boer
  • Publication number: 20020034295
    Abstract: The method and apparatus are used for cryptographically converting a digital input block into a digital output block. The apparatus 400 comprises first input means 410 for obtaining the digital input block and second input means 440 for obtaining a key K1. Cryptographic processing means 420 of the apparatus 400 convert the digital input block into the digital output block by merging a selected part M1 of the digital input block with the key K1 and producing a data block B1 which non-linearly depends on M1 and K1. The merging is performed in one, sequentially inseparable step. Output means 430 are used to output the digital output block of which a selected part is derived from B1.
    Type: Application
    Filed: August 8, 2001
    Publication date: March 21, 2002
    Applicant: U.S. Philips Corp.
    Inventor: Huibert Den Boer
  • Patent number: 6298136
    Abstract: A method and apparatus for cryptographically converting a digital input data block into a digital output data block. The apparatus has an input for supplying the input data block and a further input for supplying a code conversion digital key K1. Cryptographic processing merges a selected part M1 of the digital input data block with the key K1 to produce a data block B1 which is non-linearly dependent on M1 and K1. The merging is performed in one sequentially inseparable step. The digital output block is derived from a selected part of the data block B1.
    Type: Grant
    Filed: May 20, 1997
    Date of Patent: October 2, 2001
    Assignee: U.S. Philips Corporation
    Inventor: Huibert Den Boer