Patents by Inventor Giyyarpuram MADHUSUDAN

Giyyarpuram MADHUSUDAN 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).

  • Key selection method for cryptographic data processing
    Patent number: 10931444
    Abstract: Some embodiments relate to a data processing method comprising selecting a key from a plurality of previously stored keys, depending on at least on predefined criterion relating to at least one current value of at least one given repository. Other embodiments relate to a reception method comprising receiving second data obtained by applying, to first obtained data, a first cryptographic function using a key selected from a plurality of previously stored keys, depending on at least one predefined criterion relating to a current value of at least one given repository and for obtaining the first data by applying, to the second received data, a second cryptographic function using a second key associated with the selected key. Further embodiments relate to a processing device and a reception device that respectively implement the processing method and the reception method.
    Type: Grant
    Filed: March 27, 2015
    Date of Patent: February 23, 2021
    Assignee: ORANGE
    Inventors: Apostolos Kountouris, Francis Klay, Giyyarpuram Madhusudan
  • KEY SELECTION METHOD FOR CRYPTOGRAPHIC DATA PROCESSING
    Publication number: 20180176007
    Abstract: Some embodiments relate to a data processing method comprising selecting a key from a plurality of previously stored keys, depending on at least on predefined criterion relating to at least one current value of at least one given repository. Other embodiments relate to a reception method comprising receiving second data obtained by applying, to first obtained data, a first cryptographic function using a key selected from a plurality of previously stored keys, depending on at least one predefined criterion relating to a current value of at least one given repository and for obtaining the first data by applying, to the second received data, a second cryptographic function using a second key associated with the selected key. Further embodiments relate to a processing device and a reception device that respectively implement the processing method and the reception method.
    Type: Application
    Filed: March 27, 2015
    Publication date: June 21, 2018
    Inventors: Apostolos Kountouris, Francis KLAY, Giyyarpuram MADHUSUDAN