• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

1990 Fiscal Year Final Research Report Summary

Identity-Based Cryptosystems

Research Project

Project/Area Number 01580031
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Informatics
Research InstitutionKobe University

Principal Investigator

TANAKA Hatsukazu  Faculty of Engineering, Kobe Univ. Professor, 工学部, 教授 (80031144)

Project Period (FY) 1989 – 1990
KeywordsCryptosystem / Identity Information / Digital Signature / Discrete Logarithm / Factoring to Primes / Common-Key / Key Management
Research Abstract

This research project is to develop a secure realization scheme for the identity-based cryptosystem, of which concept is proposed by Shamir at Crypto '84, in order to realize a mail-type cryptographic communication and a digital signature for some important documents. For realization of such a cryptosystem, it is necessary to research a new one-way function which can creates two classes of secret information, of which concept is proposed by myself, and to construct the center algorithm using it. We developed our research being based on the basic concept to combine the discrete logarithm problem and the factoring problem ingeniously, and we could succeed to solve the above problem. Then the common-information is generated being based on the user's secret information given by the trusted center and the other party's public identity-information, and modifying it it is used as a common-key for the common-key cryptosystem such as DES and FEAL. Finally the above common-information can be used for implementing many kinds of identification systems, signing important messages and delivering conference keys.

  • Research Products

    (9 results)

All Other

All Publications (9 results)

  • [Publications] 田中 初一: "ID情報に基づく暗号系の一実現法" 電子情報通信学会論文誌 A. J70ーA. 1641-1651 (1987)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hatsukazu Tanaka: "A Realization Scheme for the IdentityーBased Cryptosystem" Proceedings of Crypto´87. 340-349 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Hatsukazu Tanaka: "IdentityーBased CommonーKey Generation and Its Application to Cryptosystems" IEEE Trans.Information Theory.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 田中 初一: "ID情報に基づく秘密情報の共有と暗号系の実現" 電子情報通信学会論文誌 A.

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 辻井、笠原編(田中、第6章分担執筆): "暗号と情報セキュリティ" 昭晃堂, 249 (1990)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Tanaka: ""A Realization Scheme for The Identity-Based Cryptosystem"" IEICE Trans.vol. J70-A. 1641-1651 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Tanaka: ""A Realization Scheme for The Identity-Based Cryptosystem"" Proceedings of Crypto '87. 340-349 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Tanaka: ""Identity-Based Common-Key Generation and Its Application to Cryptosystems"" IEEE Trans. on Information Theory.

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Tanaka: ""Identity-Based Common-Information Generation and Its Application to A Realization of The Identity-Based Cryptosystem"" IEICE Trans.

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 1993-08-12  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi