Patents by Inventor David L. Parrish

David L. Parrish 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: 9584495
    Abstract: A method is disclosed for establishing a secure communication session using composite key cryptography. The method comprises generating a first plurality of secret keys all of which are known only to a first communicating party and each one of which is shared with exactly one of a plurality of stewards, and generating a second plurality of secret keys all of which are known only to a second communicating party and each one of which is shared with exactly one of the plurality of stewards. The first and second communicating parties each send information to the other through different stewards, each communication leg being encrypted using a secret key known only to the respective communicating party and steward. These communications are usable to distribute cryptographic seeds to the communicating parties for use in generating a temporary session key that can be used to encrypt direct communications between the parties.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: February 28, 2017
    Assignee: Grey Heron Technologies, LLC
    Inventor: David L. Parrish
  • Patent number: 9270462
    Abstract: A method is provided for processing a digital information set having a plurality of information bytes. The method comprises receiving the information set, determining a set of initialization parameters, initializing a set of state variables using the set of initialization parameters, and generating a plurality of cryptors, each cryptor being a virtual dynamic array containing a monoalphabetic cipher. The method further comprises modifying the state variables and one or more of the cryptors, setting the index value for each cryptor in the plurality of cryptors; and selecting an ordered cryptor subset to be applied to an information byte. The information byte is processed using the ordered cryptor subset to produce a processed information byte. If the information byte is a plaintext byte, the processed byte is an encrypted byte, and vice versa. The actions of modifying, setting, selecting, and processing are then repeated for each remaining information byte.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: February 23, 2016
    Assignee: GREY HERON TECHNOLOGIES, LLC
    Inventor: David L. Parrish
  • Publication number: 20150180843
    Abstract: A method is disclosed for establishing a secure communication session using composite key cryptography. The method comprises generating a first plurality of secret keys all of which are known only to a first communicating party and each one of which is shared with exactly one of a plurality of stewards, and generating a second plurality of secret keys all of which are known only to a second communicating party and each one of which is shared with exactly one of the plurality of stewards. The first and second communicating parties each send information to the other through different stewards, each communication leg being encrypted using a secret key known only to the respective communicating party and steward. These communications are usable to distribute cryptographic seeds to the communicating parties for use in generating a temporary session key that can be used to encrypt direct communications between the parties.
    Type: Application
    Filed: December 9, 2014
    Publication date: June 25, 2015
    Inventor: David L. Parrish
  • Patent number: 8914635
    Abstract: A method is disclosed for establishing a secure communication session using composite key cryptography. The method comprises generating a first plurality of secret keys all of which are known only to a first communicating party and each one of which is shared with exactly one of a plurality of stewards, and generating a second plurality of secret keys all of which are known only to a second communicating party and each one of which is shared with exactly one of the plurality of stewards. The first and second communicating parties each send information to the other through different stewards, each communication leg being encrypted using a secret key known only to the respective communicating party and steward. These communications are usable to distribute cryptographic seeds to the communicating parties for use in generating a temporary session key that can be used to encrypt direct communications between the parties.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: December 16, 2014
    Assignee: Grey Heron Technologies, LLC
    Inventor: David L. Parrish
  • Publication number: 20140047237
    Abstract: A method is disclosed for establishing a secure communication session using composite key cryptography. The method comprises generating a first plurality of secret keys all of which are known only to a first communicating party and each one of which is shared with exactly one of a plurality of stewards, and generating a second plurality of secret keys all of which are known only to a second communicating party and each one of which is shared with exactly one of the plurality of stewards. The first and second communicating parties each send information to the other through different stewards, each communication leg being encrypted using a secret key known only to the respective communicating party and steward. These communications are usable to distribute cryptographic seeds to the communicating parties for use in generating a temporary session key that can be used to encrypt direct communications between the parties.
    Type: Application
    Filed: March 7, 2013
    Publication date: February 13, 2014
    Applicant: Grey Heron Technologies, LLC
    Inventor: David L. Parrish
  • Publication number: 20130308774
    Abstract: A method is provided for processing a digital information set having a plurality of information bytes. The method comprises receiving the information set, determining a set of initialization parameters, initializing a set of state variables using the set of initialization parameters, and generating a plurality of cryptors, each cryptor being a virtual dynamic array containing a monoalphabetic cipher. The method further comprises modifying the state variables and one or more of the cryptors, setting the index value for each cryptor in the plurality of cryptors; and selecting an ordered cryptor subset to be applied to an information byte. The information byte is processed using the ordered cryptor subset to produce a processed information byte. If the information byte is a plaintext byte, the processed byte is an encrypted byte, and vice versa. The actions of modifying, setting, selecting, and processing are then repeated for each remaining information byte.
    Type: Application
    Filed: July 15, 2013
    Publication date: November 21, 2013
    Inventor: David L. Parrish
  • Patent number: 8488779
    Abstract: A method is provided for processing a digital information set having a plurality of information bytes. The method comprises receiving the information set, determining a set of initialization parameters, initializing a set of state variables using the set of initialization parameters, and generating a plurality of cryptors, each cryptor being a virtual dynamic array containing a monoalphabetic cipher. The method further comprises modifying the state variables and one or more of the cryptors, setting the index value for each cryptor in the plurality of cryptors; and selecting an ordered cryptor subset to be applied to an information byte. The information byte is processed using the ordered cryptor subset to produce a processed information byte. If the information byte is a plaintext byte, the processed byte is an encrypted byte, and vice versa. The actions of modifying, setting, selecting, and processing are then repeated for each remaining information byte.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: July 16, 2013
    Assignee: Grey Heron Technologies, LLC
    Inventor: David L. Parrish
  • Publication number: 20130028410
    Abstract: A method is provided for processing a digital information set having a plurality of information bytes. The method comprises receiving the information set, determining a set of initialization parameters, initializing a set of state variables using the set of initialization parameters, and generating a plurality of cryptors, each cryptor being a virtual dynamic array containing a monoalphabetic cipher. The method further comprises modifying the state variables and one or more of the cryptors, setting the index value for each cryptor in the plurality of cryptors; and selecting an ordered cryptor subset to be applied to an information byte. The information byte is processed using the ordered cryptor subset to produce a processed information byte. If the information byte is a plaintext byte, the processed byte is an encrypted byte, and vice versa. The actions of modifying, setting, selecting, and processing are then repeated for each remaining information byte.
    Type: Application
    Filed: July 25, 2011
    Publication date: January 31, 2013
    Inventor: David L. Parrish