Title:
MUTUAL AUTHENTICATION METHOD AND DEVICE THEREFOR
Document Type and Number:
Japanese Patent JP3253060
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a mutual authentication method that keeps security against attacks and executes efficient authentication.
SOLUTION: A random number A1 is generated in a STAB, a GA1Mod P is sent to a SAT 2 by the Diffie-Hellman key delivery algorithm. The STA2 generates a random number A2 and sends GA2Mod P to the STA1. The STA1, STA2 obtain a shared key GA1.A2Mod P. The STA2 sends a certificate of a public key PK2 of the STA2 by an authentication station and a signature C2 of the GA1Mod P by a private key K2 to the STA1. The STA1 sends a certificate of a public key PK1 of the STA1 by an authentication station and a signature C1 of the GA2Mod P by a private key K1 to the STA2. The STA1, STA2 confirm the legitimacy of the public key based on the received information and authenticates the signatures with each other by using the respective public keys.
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Inventors:
Kuno Yutaka
Tetsutaro Kobayashi
Hikaru Morita
Tetsutaro Kobayashi
Hikaru Morita
Application Number:
JP35715897A
Publication Date:
February 04, 2002
Filing Date:
December 25, 1997
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04L9/32; G09C1/00; H04L9/08; (IPC1-7): H04L9/32; G09C1/00; H04L9/08
Domestic Patent References:
| JP5344117A | ||||
| JP4297156A |
Other References:
太田和夫，ＲＳＡ暗号を利用したＩＤに基づく認証方式，昭和６３年電子情報通信学会秋季全国大会講演論文集，日本，１９８８年８月１５日，基礎・境界［分冊Ａ−１］，Ａ−１−９１
Attorney, Agent or Firm:
Suguru Kusano