Patents by Inventor Douglas Bradley Lowry

Douglas Bradley Lowry 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: 10637837
    Abstract: A method according to an example of the present disclosure includes, obtaining an encrypted version of a shared reference file that is shared by a group of one or more confidants, receiving a request from a particular confidant in the group to encrypt a data segment for the group, and selecting a portion of the encrypted version of the shared reference file as an encryption key for the request. The selecting is performed based on a date and time of the request. The encryption key is used to encrypt the data segment. A computing device and computer program product are also disclosed.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 28, 2020
    Assignee: MARPEX, INC.
    Inventor: Douglas Bradley Lowry
  • Patent number: 10505715
    Abstract: An example method of cryptographically modifying an input data segment includes performing, in a first stage, a first bit substitution operation based on a first stage input segment and a first cryptographic key sequence. The method also includes performing, in a subsequent second stage, a bit dispersal based on a second stage input segment and a second cryptographic key sequence. The method also includes performing, in a subsequent third stage, a second bit substitution operation based on a third stage input segment and a third cryptographic key sequence. The first, second, and third stage input segments are all derived from the input data segment.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: December 10, 2019
    Assignee: MARPEX, INC.
    Inventor: Douglas Bradley Lowry
  • Publication number: 20190158271
    Abstract: An example method of cryptographically modifying an input data segment includes performing, in a first stage, a first bit substitution operation based on a first stage input segment and a first cryptographic key sequence. The method also includes performing, in a subsequent second stage, a bit dispersal based on a second stage input segment and a second cryptographic key sequence. The method also includes performing, in a subsequent third stage, a second bit substitution operation based on a third stage input segment and a third cryptographic key sequence. The first, second, and third stage input segments are all derived from the input data segment.
    Type: Application
    Filed: November 17, 2017
    Publication date: May 23, 2019
    Inventor: Douglas Bradley Lowry