Patents by Inventor Shiho Moriai

Shiho Moriai 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).

  • Data processing apparatus, secured circuit, program and data processing method
    Publication number: 20060122802
    Abstract: A data processing apparatus capable of testing whether a secure circuit is normal or not while maintaining confidentiality of the secured circuit is provided: wherein the secured circuit conducts a self-diagnostic test thereof in accordance with a self-diagnostic test start instruction signal from a CPU, and the secured circuit outputs a self-diagnostic test result signal indicating whether the secured circuit is normal or not to the CPU.
    Type: Application
    Filed: November 30, 2005
    Publication date: June 8, 2006
    Applicants: Sony Corporation, Sony Computer Entertainment Inc.
    Inventors: Masanobu Okabe, Masafumi Kusakawa, Kyoji Shibutani, Sumio Morioka, Asami Yoshida, Muneki Shimada, Shiho Moriai
  • Battery and authentication requesting device
    Publication number: 20060117176
    Abstract: A peripheral device that is connected to a main body as an authentication requesting device operates as a device to be authenticated. Receiving code-related information from the main body, the peripheral device acquires a challenge code on the basis of the received code-related information, generates encrypted information by encrypting the challenge code, and transmits encryption-related information that relates to the generated encrypted information to the main body. The code-related information is part of the challenge code and/or the encryption-related information is part of the encrypted information.
    Type: Application
    Filed: November 21, 2005
    Publication date: June 1, 2006
    Applicant: Sony Computer Entertainment Inc.
    Inventors: Dai Sasaki, Shiho Moriai
  • Block cipher apparatus using auxiliary transformation
    Publication number: 20060050874
    Abstract: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit ((FL?1)) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit ((FL?1)) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
    Type: Application
    Filed: October 28, 2005
    Publication date: March 9, 2006
    Inventors: Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki
  • Block cipher apparatus using auxiliary transformation
    Publication number: 20060050872
    Abstract: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL?1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit (FL?1) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
    Type: Application
    Filed: October 28, 2005
    Publication date: March 9, 2006
    Inventors: Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki
  • Block cipher apparatus using auxiliary transformation
    Publication number: 20060050873
    Abstract: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL?1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit (FL?1) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
    Type: Application
    Filed: October 28, 2005
    Publication date: March 9, 2006
    Inventors: Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki
  • Block cipher apparatus using auxiliary transformation
    Publication number: 20060045265
    Abstract: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL?1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit (FL?1) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
    Type: Application
    Filed: October 28, 2005
    Publication date: March 2, 2006
    Inventors: Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki
  • Block encryption device using auxiliary conversion
    Publication number: 20020159599
    Abstract: It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL−1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit (FL−1) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
    Type: Application
    Filed: January 8, 2002
    Publication date: October 31, 2002
    Inventors: Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai, Kazumaro Aoki