Patents by Inventor Josuke Matsuki

Josuke Matsuki 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).

  • Publication number: 20240289472
    Abstract: To detect an unauthorized access easily, conveniently, and reliably, an unauthorized access detection system stores data indicating an access destination of an unauthorized access to be detected, detects an access request, determines whether an access source indicated by the access request matches an access source stored in advance and also whether an access destination indicated by the access request matches the data stored, suspends an access to the access destination requested by the access request if it is determined that the access source indicated by the access request matches the access source stored in advance and also that the access destination indicated by the access request matches the data stored, receives an input of biometric information from a user, performs authentication based on the biometric information inputted, and controls the suspended access according to a result of the authentication.
    Type: Application
    Filed: September 19, 2023
    Publication date: August 29, 2024
    Inventors: Rito ISHII, Tsutomu IMAI, Josuke MATSUKI
  • Patent number: 8670565
    Abstract: The communications between terminals are encrypted, and even a gateway device is permitted to analyze the encrypted communications, thereby to incarnate censorship for the prevention of information leakage. A gateway device 3 prepares a public key and a secret key in a pair on the basis of a public key encryption system, and distributes the public key to terminals 2a-2c which are managed by the gateway device 3. The terminals 2a-2c subject a communication packet to a prior-art common key encryption, and they thereafter encrypt a common key with the public key and bestow the encrypted common key on the packet. The gateway device 3 decrypts the common key by using the secret key, censors the packet and returns the packet into a prior-art encrypted packet format, and it thereafter transfers the packet to a network 1c where opposite terminals 2d-2f exist.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: March 11, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Josuke Matsuki, Masashi Takatsuki, Yukihiro Shimmura
  • Publication number: 20080181404
    Abstract: The communications between terminals are encrypted, and even a gateway device is permitted to analyze the encrypted communications, thereby to incarnate censorship for the prevention of information leakage. A gateway device 3 prepares a public key and a secret key in a pair on the basis of a public key encryption system, and distributes the public key to terminals 2a-2c which are managed by the gateway device 3. The terminals 2a-2c subject a communication packet to a prior-art common key encryption, and they thereafter encrypt a common key with the public key and bestow the encrypted common key on the packet. The gateway device 3 decrypts the common key by using the secret key, censors the packet and returns the packet into a prior-art encrypted packet format, and it thereafter transfers the packet to a network 1c where opposite terminals 2d-2f exist.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 31, 2008
    Inventors: Josuke Matsuki, Masashi Takatsuki, Yukihiro Shimmura