Patents by Inventor Douglas Neil Hoover

Douglas Neil Hoover 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).

  • Format-preserving encryption via rotating block encryption
    Patent number: 8948376
    Abstract: Methods and systems are described for format-preserving encryption. Format-preserving encryption on an entire format F may be achieved by performing format-preserving encryption on one or more subsets of F and then applying one or more permutation rounds in such a way that all elements of F enter a subset to be encrypted. A predetermined number of encryption rounds and a predetermined number of permutation rounds may be interleaved until all elements are thoroughly mixed. The resultant output data may be saved in a database in the same format as the original input data, meet all constraints of the database, and pass all validity checks applied by software supporting the database.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: February 3, 2015
    Assignee: CA, Inc.
    Inventor: Douglas Neil Hoover
  • Format-Preserving Encryption Via Rotating Block Encryption
    Publication number: 20110280394
    Abstract: Methods and systems are described for format-preserving encryption. Format-preserving encryption on an entire format F may be achieved by performing format-preserving encryption on one or more subsets of F and then applying one or more permutation rounds in such a way that all elements of F enter a subset to be encrypted. A predetermined number of encryption rounds and a predetermined number of permutation rounds may be interleaved until all elements are thoroughly mixed. The resultant output data may be saved in a database in the same format as the original input data, meet all constraints of the database, and pass all validity checks applied by software supporting the database.
    Type: Application
    Filed: January 14, 2011
    Publication date: November 17, 2011
    Applicant: Arcot, a CA Technologies company
    Inventor: Douglas Neil Hoover