Method of managing digital signature, apparatus for...

Details Method of managing digital signature, apparatus for... Method of managing digital signature, apparatus for...

2002-05-17

2009-08-11

Moise, Emmanuel L (Department: 2437)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S170000, C713S180000, C713S181000, C713S176000, C713S168000

Reexamination Certificate

active

07574605

ABSTRACT:
A method of managing digital signature includes the steps of preparing a signature log file storing signature log entry information, generating a new digital signature for a transmission message by reflecting, in the new digital signature, signature log entry information registered to the signature log file in the past; generating signature log entry information associated with the new digital signature and registering the signature log entry information to the signature log file; and preparing a user search file in addition to the signature log file; registering, to the user search file, user identifier information indicating a transmission destination of the transmitted digital signature and a transmission source of the received digital signature, with a correspondence established between the information, the user identifier information, and each signature log entry information in the signature log file.

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