Security and ticketing system control and management

a ticketing system and security technology, applied in the field of ticketing system control and management, can solve the problems of ticketing allowing fraudulent duplication, difficult to prevent multiple use of duplicated tickets only through software units, security devices implemented in hardware have limitations in hardware resources allocatable,
US20050204140A1Inactive Publication Date: 2005-09-15IBM CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
IBM CORP
Publication Date
2005-09-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

A security device of this invention includes a nonvolatile storage unit 22 for storing a validity check unit including a counter updated every time signature function means 30 is called up, a volatile storage unit 24 for reading and storing a counter array out of an external nonvolatile storage unit storing the counter array, in which the counter array is obtained by coupling a hash value generated for each signature key with a signature number counter for counting the number of signatures performed by use of the signature key, and a hash function unit 28 for reading the counter array out of the volatile storage unit 24, generating the hash value, and transferring the hash value to the validity check unit for a validity check.
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Description

FIELD OF THE INVENTION

[0001] The present invention generally relates to prevention of fraudulent uses of digital tickets, or more specifically to a security device and an information processing device for performing security control and management of digital tickets. BACKGROUND OF THE INVENTION

[0002] Along with diffusion of information processing devices such as personal computers, PDAs, cellular phones, and the like in recent years, it is conceivable that a technique for providing a service by use of a so-called digital ticket (hereinafter referred simply to as a ticket in the present invention) will become widespread. Such a ticket allows fraudulent duplication because of the nature of electronic data. Accordingly, it is conceivable to be increasingly necessary to prevent acts of performing multiple accesses by use of a fraudulently duplicated ticket (hereinafter referred to as multiple uses).

[0003] Although such fraudulent acts must be eliminated, the ticket in the present inv...

Claims

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