Nippon Telegraph and Telephone Corporation

Ko Fujimura

Masayuki Terada

Yoshihito Oshima

Hiroshi Kuno

Masayuki Hanadate

Kazuo Matsuyama

An original data circulation system for storing or circulating original data which is digital information is provided. The original data circulation system includes an issuer apparatus, a user apparatus and a collector apparatus. The issuer apparatus generates originality information including first information corresponding to the issuer apparatus and second information corresponding to data and sends the originality information. The user apparatus verifies the validity of the source apparatus of the originality information and stores the originality information when the validity is verified. The collector apparatus verifies the validity of the source apparatus of the originality information and processes data corresponding to the second information when the validity is verified.

Original, data circulation method, system, apparatus, and computer readable medium

Original data circulation method, system, apparatus, and computer readable medium

A transferer terminal accesses its account (of the transferer) to receive a list of electronic tickets contained in his account, selects a ticket which is to be transferred, transmits that electronic ticket, an account address of a transferee and a demand for transfer to the account, which in turn accesses an account of a transferee to receive an account addreess certificate, which is then verified by a terminal. A result of verification is transmitted to the account of transferer, whereby the electronic ticket is transmitted from the account of the transferer to the account the transferee. The account of the transferee verifies the received electronic ticket, and upon successful verification, it transmits such result to the account of the transferer, which then demands a certificate of transfer with signature from the transferer terminal. The transferer terminal demands a signature to be attached to the certificate of transfer from a portable processor. The certificate of transfer with signature which is thus obtained is then transmitted to the account of the transferer, which then transmits it to the account of the transferee. The account of the transferee retains the received certificate of transfer with signature together with the electronic ticket.

Electronic rights information processing system, method and apparatus for carrying out same and recorded medium for program carrying out the method

An electronic ticket comprises a ticket ID, an issuer ID, right informationof the electronic ticket, and issue, transfer and redeem conditionsand, the entire block of these pieces of information being attached with an issuer's signature. In each of the issue, transfer and redeem conditions there are recorded ticket schema ID's which specify the types of tickets that the ticket sender and receiver are required to possess, and in each phase of the issue, transfer and redeem transactions it is verified whether these conditions are satisfied.

Recording medium with electronic ticket definitions recorded thereon and electronic ticket processing methods and apparatuses

In a hypertext made up of a plurality of linked documents, each document is composed of a document ID, an issuer ID, a property definition, and a signature attached to the document in its entirety. The property definition includes a property name , a value , a destination document ID , and a constraint definition part . By setting in the constraint definition part a hash constraint on the destination document , a schema ID constraint defining the document type of the document , and a constraint restricting the value of a particular property of the document , it is possible to make alterations in the contents of a signed document or attach a document and to prevent invalid alterations in the document contents or invalid attachment of a document.

Recording medium with a signed hypertext recorded thereon signed hypertext generating method and apparatus and signed hypertext verifying method and apparatus

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Yokohama, Japan

Ko Fujimura