Patents by Inventor Eisuke Norimoto

Eisuke Norimoto 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).

  • COMPUTER-READABLE RECORDING MEDIUM, ENCRYPTING APPARATUS, AND ENCRYPTING METHOD
    Publication number: 20160210479
    Abstract: An encrypting apparatus generates an encoded data from a target file, in units of blocks with a fixed length. The encrypting apparatus creates association information for a plurality of blocks in the encoded data. The association information associates each of a plurality of top encoded codes and each of a plurality of in-file positions of the plurality of blocks. The plurality of top encoded codes are positioned at a beginning of the each of the plurality of blocks in the encoded data. The plurality of in-file positions are positions of the plurality of blocks in the target file. The encrypting apparatus encrypts the encoded data in units of the blocks.
    Type: Application
    Filed: January 18, 2016
    Publication date: July 21, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Masahiro KATAOKA, Eisuke NORIMOTO, Tetsuhiro CHIBA
  • Encryption apparatus, encryption method, decryption apparatus, decryption method and system
    Patent number: 9305171
    Abstract: An encryption method includes encrypting a first portion and second portion each of which is included in data to be encrypted, encrypting first information used for decryption of the first data portion, and associating second information used for decryption of the second portion with a predetermined part of the first data portion.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: April 5, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Masahiro Kataoka, Takahiro Murata, Takafumi Ohta, Eisuke Norimoto
  • Encrypting method, recording medium of encrypting program, decrypting method, and recording medium of decrypting program
    Patent number: 8645713
    Abstract: An encrypting method including encrypting a first data segment of encryption target data on the basis of first key information, generating second key information on the basis of the first data segment by using a predetermined algorithm, and encrypting a second data segment of the encryption target data, which is different from the first data segment, on the basis of the second key information.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: February 4, 2014
    Assignee: Fujitsu Limited
    Inventors: Eisuke Norimoto, Masahiro Kataoka
  • ENCRYPTING METHOD, RECORDING MEDIUM OF ENCRYPTING PROGRAM, DECRYPTING METHOD, AND RECORDING MEDIUM OF DECRYPTING PROGRAM
    Publication number: 20120246485
    Abstract: An encrypting method including encrypting a first data segment of encryption target data on the basis of first key information, generating second key information on the basis of the first data segment by using a predetermined algorithm, and encrypting a second data segment of the encryption target data, which is different from the first data segment, on the basis of the second key information.
    Type: Application
    Filed: March 16, 2012
    Publication date: September 27, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Eisuke Norimoto, Masahiro Kataoka