Patents by Inventor David Hughston Rodrigue SARRAZIN

David Hughston Rodrigue SARRAZIN 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).

  • Encrypting and decrypting data on an electronic device
    Patent number: 10348502
    Abstract: Systems, methods, and software can be used to encrypt and decrypt data. In some aspects, a first primary secret key based on a primary ephemeral key pair and a primary master public key is generated by a primary data service application on an electronic device. A first primary ciphertext is generated by encrypting a first portion of the data using the first primary secret key. A second primary secret key is generated based on the first primary secret key. The first primary secret key is deleted. The first primary ciphertext is sent from the primary data service application to a secondary data service application. A first encrypted text is received from the secondary data service application. The first encrypted text is generated by encrypting the first primary ciphertext.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: July 9, 2019
    Assignees: BlackBerry Limited, 2236008 ONTARIO INC.
    Inventors: Roger Paul Bowman, Dmitri Pechkin, David Hughston Rodrigue Sarrazin, Timothy Lee Segato
  • ENCRYPTING AND DECRYPTING DATA ON AN ELECTRONIC DEVICE
    Publication number: 20180069695
    Abstract: Systems, methods, and software can be used to encrypt and decrypt data. In some aspects, a first primary secret key based on a primary ephemeral key pair and a primary master public key is generated by a primary data service application on an electronic device. A first primary ciphertext is generated by encrypting a first portion of the data using the first primary secret key. A second primary secret key is generated based on the first primary secret key. The first primary secret key is deleted. The first primary ciphertext is sent from the primary data service application to a secondary data service application. A first encrypted text is received from the secondary data service application. The first encrypted text is generated by encrypting the first primary ciphertext.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 8, 2018
    Applicants: BlackBerry Limited, 2236008 Ontario Inc.
    Inventors: Roger Paul BOWMAN, Dmitri PECHKIN, David Hughston Rodrigue SARRAZIN, Timothy Lee SEGATO