ELECTRONIC INFORMATION AUTHENTICATION SYSTEM, PORTABLE INFORMATION TERMINAL AND ELECTRONIC INFORMATION AUTHENTICATION METHOD USED THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide an electronic authentication system capable of applying robust security to specific electronic information in a terminal and its relevant information without increasing cost.

SOLUTION: A base storage region 133 of a ticket management base 13 of a portable information terminal 1 stores relevant information transferred from a ticket issuing server 3 permitted by a base AC 132. The base storage region 133 is made accessible from a UA 11, a ticket base managing server 4 and a ticket issuing server 3. The electronic ticket whose security should be considered is stored in a Secure memory 14, and when it is not necessary to consider the security so much, the electronic ticket is placed in the base storage region 133.

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