Title:
AUTHENTICATION METHOD
Document Type and Number:
Japanese Patent JP2723415
Kind Code:
B2
Abstract:
PURPOSE: To shorten the time required for the authentication processing of a specific service request by storing a 2nd signal as a new authentication answer signal.
CONSTITUTION: At the specific service request, a node 2 stores an authentication key of a node 1 and a recognition answer signal, sent back from a node 1 at the time of the process of a last service request, and the node 1 puts a signal, generated by ciphering the recognition answer signal generated in the process of the last service request with the authentication key, in a service request signal and sends them. The node 2 receives the deciphers the signal with the authentication key, performs certifying operation by collating the deciphering result with the stored authentication answer signal, and updates the authentication signal with the signal received from the node 1. Thus, the node 1 stored the authentication answer used for the last communication process and the node 2 stores the authentication answer and the authentication key of the node 1, so a request for the authentication key to the storage device of the node 2 and an authentication request procedure to the node 1 can be omitted.
Inventors:
SUZUKI SHIGEFUSA
NOHARA TATSUO
NOHARA TATSUO
Application Number:
JP1864092A
Publication Date:
March 09, 1998
Filing Date:
February 04, 1992
Export Citation:
Assignee:
NIPPON DENSHIN DENWA KK
International Classes:
H04W12/00; H04B7/26; H04L9/32; (IPC1-7): H04Q7/38; H04L9/32
Attorney, Agent or Firm:
Takashi Sawai
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