Patents by Inventor Kyoko YOKOE

Kyoko YOKOE 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).

  • Non-transitory computer readable medium storing program, information processing apparatus, and information processing method
    Patent number: 8499162
    Abstract: A non-transitory computer readable medium storing a program causing a computer to execute a process including: accepting an instruction for verifying an electronic signature added to information; verifying the electronic signature on the basis of an electronic certification corresponding to the electronic signature in accordance with the accepted instruction; calculating, when it is determined that the information has not been tampered with, a hash value of a combination of the information, the electronic signature, and validity-period information indicating a validity period of the electronic certification; adding a time stamp to the calculated hash value; outputting the information, the electronic signature, the hash value, and the validity-period information to a storage device; and outputting, when it is determined that the information has not been tampered with, a verification result including information indicating that the information has not been tampered with.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 30, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Kyoko Yokoe
  • NON-TRANSITORY COMPUTER READABLE MEDIUM STORING PROGRAM, INFORMATION PROCESSING APPARATUS, AND INFORMATION PROCESSING METHOD
    Publication number: 20120017092
    Abstract: A non-transitory computer readable medium storing a program causing a computer to execute a process including: accepting an instruction for verifying an electronic signature added to information; verifying the electronic signature on the basis of an electronic certification corresponding to the electronic signature in accordance with the accepted instruction; calculating, when it is determined that the information has not been tampered with, a hash value of a combination of the information, the electronic signature, and validity-period information indicating a validity period of the electronic certification; adding a time stamp to the calculated hash value; outputting the information, the electronic signature, the hash value, and the validity-period information to a storage device; and outputting, when it is determined that the information has not been tampered with, a verification result including information indicating that the information has not been tampered with.
    Type: Application
    Filed: January 14, 2011
    Publication date: January 19, 2012
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Kyoko YOKOE