Patents by Inventor Hiroyuki Mayuzumi

Hiroyuki Mayuzumi 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).

  • Cooperation service providing system and server apparatus
    Patent number: 9813386
    Abstract: Upon receiving ciphertext data transmitted by each service apparatus, a cooperation apparatus according to an embodiment generates re encrypted data by performing re encryption processing for the ciphertext data using are encryption key. Each of the service apparatuses transmits, to the cooperation apparatus, a request to acquire user information of a user specified by an identification (ID) indicated by the ciphertext data and stored in the other service apparatus, together with the ciphertext data. Upon receiving the re encrypted data transmitted by the cooperation apparatus, the service apparatus acquires an ID by decrypting the re encrypted data using a private key, reads out user information, and transmits the user information to the other service apparatus.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: November 7, 2017
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA SOLUTIONS CORPORATION
    Inventors: Yoshihiro Fujii, Koji Okada, Hiroyuki Mayuzumi, Masahisa Tajiri
  • COOPERATION SERVICE PROVIDING SYSTEM AND SERVER APPARATUS
    Publication number: 20150200917
    Abstract: Upon receiving ciphertext data transmitted by each service apparatus, a cooperation apparatus according to an embodiment generates re-encrypted data by performing re-encryption processing for the ciphertext data using a re-encryption key. Each of the service apparatuses transmits, to the cooperation apparatus, a request to acquire user information of a user specified by an ID indicated by the ciphertext data and stored in the other service apparatus, together with the ciphertext data. Upon receiving the re-encrypted data transmitted by the cooperation apparatus, the service apparatus acquires an ID by decrypting the re-encrypted data using a private key, reads out user information, and transmits the user information to the other service apparatus.
    Type: Application
    Filed: March 25, 2015
    Publication date: July 16, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA SOLUTIONS CORPORATION
    Inventors: Yoshihiro FUJII, Koji Okada, Hiroyuki Mayuzumi, Masahisa Tajiri