Patents by Inventor Satoshi Kakeya

Satoshi Kakeya 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).

  • Encryption method, program for encryption, memory medium for storing the program, and encryption apparatus, as well as decryption method and decryption apparatus
    Patent number: 7218733
    Abstract: The present invention relates to a cryptosystem. A keystream table [Ks] is a virtual data space. Every data of 1 byte in a secondary ciphertext E2 provides a vector directional component IR. The data Ks (IR) in the keystream table [Ks] designated by the directional component IR of the vector is recognized as the quantitative component of the vector. By handling a secondary ciphertext E2 of 1 byte as the address in the keystream table [Ks], the secondary ciphertext E2 can be recognized as the directional component of the vector. A logical operation for the data Ks (IR) is performed, and the internal vector data V is sequentially replaced every 1 byte. An exclusive OR operation is performed between the internal vector data V and the primary ciphertext E1 for generating a secondary ciphertext E2.
    Type: Grant
    Filed: October 24, 2001
    Date of Patent: May 15, 2007
    Assignee: C4 Technology Inc.
    Inventors: Jingye Li, Satoshi Kakeya
  • Encryption method, program for encryption, memory medium for storing the program, and encryption apparatus, as well as decryption method and decryption apparatus
    Publication number: 20030007635
    Abstract: The present invention relates to a cryptosystem. A keystream table [Ks] is a virtual data space. Every data of 1 byte in a secondary ciphertext E2 provides a vector directional component IR. The data Ks (IR) in the keystream table [Ks] designated by the directional component IR of the vector is recognized as the quantitative component of the vector. By handling a secondary ciphertext E2 of 1 byte as the address in the keystream table [Ks], the secondary ciphertext E2 can be recognized as the directional component of the vector. A logical operation for the data Ks (IR) is performed, and the internal vector data V is sequentially replaced every 1 byte. An exclusive OR operation is performed between the internal vector data V and the primary ciphertext E1 for generating a secondary ciphertext E2.
    Type: Application
    Filed: October 24, 2001
    Publication date: January 9, 2003
    Applicant: C4 Technology, Inc.
    Inventors: Jingye Li, Satoshi Kakeya