Ntt Docomo, Inc.

Other

The University of Tokyo

Nit Docomo, Inc.

Ken Sakamura

Noboru Koshizuka

Kazuhiko Ishii

Kensaku Mori

Sadayuki Hongo

Hiroshi Aono

Masayuki Terada

An electronic value exchange systemcomprises a mobile terminaland a mobile terminal. The mobile terminalcauses a driverto transmit an exchange offer message of electronic value V, Vto the mobile terminal. The mobile terminalstores handlers that the drivercan execute in relationship to a message in a common table, and acquires a handler corresponding to the above-mentioned offer message, and notifies the exchange offer contents based on the handler to an application program. If the application programconsents to the offer contents according to the operation of a user, the electronic value Vstored in an IC cardis transmitted to an IC cardvia a driverand the driver

Electronic value exchange system, mobile terminal, and electronic value exchange method

Between an IC card () and a electronic ticket server (), upon purchasing an electronic ticket a public key cryptosystem is employed for a mutual authentication to keep a strict security, and a shared secret between the electronic ticket and a ticket collecting machine is sent on a secure channel as well as the electronic ticket. Upon usage of the electronic ticket, the IC card () and the ticket collecting machine () mutually judge whether they carry out the mutual authentication by using a public key cryptosystem or a symmetric key cryptosystem. When they determine to use the symmetric key cryptosystem, they carry out the mutual authentication by using the shared secret exchanged beforehand. When they determine to use the public key cryptosystem, they carry out the mutual authentication by using the same method as that used upon purchasing the electronic ticket. This method of mutual authentication can dynamically switch cryptosystems for cryptographic communication between the IC cards or between the IC card and a tamper resistant device having an equivalent function to an IC card installed in related servers or the ticket collecting machine, based on their judgment of the types of bearers, the required degree of security and the required processing speed.

IC card and authentication method in electronic ticket distribution system

A data processing method using a data processing apparatus on a transmitting side having an application for performing processing using an internal device set in the data processing apparatus, a driver that accepts an access request to the internal device from the application, a handler that performs access processing to the internal device and transmitting a message to an external device set outside the data processing apparatus, and a storage device that stores a device ID as a transmission destination for specifying the internal or external device and the handler in association with each other, and a data processing apparatus on a receiving side that receives the message transmitted from the data processing apparatus on the transmitting side.

Data processing device and data processing method

Realizing a data communication device and a data communication method enabling to specify an IC memory mounted in the communication device and to perform data communication to the communication device in which the IC memory is mounted. A mobile deviceof transmitting side accepts a domain ID specifying a detachable IC memory uniquely from an application, a communication driverobtains an IP address of the device of correspondent on the basis of the accepted domain ID from a name serverstoring the domain ID and the IP address being associated with each other. Then, the communication driverobtains a port ID which an IC memory of the device of correspondent assigned to an application, and transmits the domain ID and the port ID together with a transmission data to the IP address. The device of correspondent rims the application based on the received port ID and executes an appropriate processing.

Data communication apparatus and data communication method

A Terminal equipmenthas a message information accepterfor accepting message information from terminal program, an ID generatorfor generating a thread ID for identifying the message information, a transmitterfor generating a message containing the message information and the thread ID and for transmitting the message to IC card, and a receiverfor receiving a message from the IC card. When the message received from the IC cardcontains the thread ID inserted in the transmitted message, the message information accepterreturns the received message as a return value for the message information to the terminal programand terminates a process attributed to the message information.

Terminal equipment

A portable terminal, when receiving an exchange offer message of electronic values from a portable terminal, notifies an application program of an exchange offer content based on a listener corresponding to the message. When the application program accepts this offer content and when electronic values are determined as exchange objects, the portable terminal returns an exchange confirmation message of the electronic values. When the portable terminal receives the exchange confirmation message, it notifies an application program of an exchange content based on a listener corresponding to the message. When the application program accepts the exchange content, the exchange transaction of electronic values is started.

Electronic value exchange system and electronic value exchange method

Each IC cardnotifies a serverof the ID of the IC card and the connection information of a terminal device to which the IC card is connected. The serverstores the ID and the connection information in a databasewhile associating the ID and the connection information with each other. When an IC cardcommunicates with another IC card, the IC cardrequests the connection information concerning the destination IC card from the serverwhile specifying the ID of this IC card. The serversearches the databasefor the connection information corresponding to the ID specified by the request, and notifies the requesting IC cardof the acquired connection information. This enables communications between IC cards even if the terminal device to which a destination IC card is connected has been changed in the past.

Connection information management system for managing connection information used in communications between IC cards

A user device uses, instead of agreement information, only second session information contained in the agreement information, to generate an electronic signature for information containing the session information and information indicating an abort request, and outputs abort request information containing the session information, the information indicating the abort request, and the electronic signature, whereby transmission/reception can be performed without unnecessary information. Similarly, it may be configured to use only the second session information to generate an electronic signature for information containing the session information and information indicating a commitment request, and to output commitment request information containing the electronic signature. Since a third-party device defines a third session state as abort in correspondence to the second session information, it is able to manage states while appropriately discriminating a plurality of concurrent electronic value exchanges.

Electronic value exchange method, user device, and third-party device

In a mobile terminal that performs transmission and reception of a message between an IC card and a terminal program, the security is improved by preventing an imposture of a source of a message or an interception of a message. A mobile terminal comprises an IC card and a terminal program. The terminal program generates a program identifier (i1:1) from a domain ID 'i1' of the IC card and a port number '1' that can be updated in the IC card. Then, a message is transmitted, the source ID of which is the program identifier and the destination ID of which is the identifier &#x201c;i1:0&#x201d; of the IC card. Upon receipt of the message, the IC card collates the domain ID with the domain ID that the IC card has, as to the source ID. When they coincide, processing in accordance with the contents of the above-mentioned message is performed.

Mobile terminal and authentication method

A folder containing at least one file can be created in a file storage () in response to a folder creation request from an owner () of an IC card (), and an access authority to the folder can be set as an access control list (A) of the folder in response to an access authority setting request from the owner (0). Then access to the file is controlled not only on the basis of the access authority to the file set by an issuer of a voucher (issuer of the file), but also on the basis of the access authority to the folder set by the owner ().

IC card and access control method

When a portable terminal receives a condition for an exchange object from a portable terminal, it selects electronic values as exchange objects, out of lists constituting the condition. An IC card deletes the electronic value and sends a message addressed to the portable terminal. An IC card deletes the electronic value in conjunction with fulfillment of a predetermined condition and thereafter sends a message addressed to the IC card. The IC card stores the electronic value in conjunction with fulfillment of a predetermined condition and sends a message addressed to the IC card. The IC card stores the electronic value.

It is an object to provide a tamper resistant device and a file generation method which can store right value information such as a ticket information, and guarantee validity of the right value information without executing a digital signature processing. An IC cardattached to a portable terminalreceives, from an applicationright value information representing a right value and a file generation message instructing generation of a rights-file. The right value information includes file data representing the right value, data size and the like. Upon determining that a file generation message is received, the IC cardgenerates a rights-file including the IC card identification ID and right value information which are previously stored in the IC card

Tamper resistant device and file generation method

An electronic value transferring device such as a high speed and large capacity computer or mobile terminal device is disclosed that can function as a contactless IC card performing electronic value operations. The device is connectable to an IC card that performs electronic value operations, and includes a microprocessor for transmitting and receiving data to and from the IC card: an interface circuit for providing an IC card interface to allow the IC card to send and receive electronic values to and from other IC cards by radio; an antenna; and the microprocessor having a memory for temporarily storing plural electronic values.

Electronic value transfer device equipped with non-contact IC interface

A portable terminalaccording to the present invention is provided with an electronic book coupon storage, a book data receiver, an electronic book coupon deductor, and a book data decryptor. The electronic book coupon storagestores an electronic book coupon used in acquisition of book data containing a plurality of page data units, along with a decryption key used in decryption of the plurality of page data units. The book data receiverreceives the book data from an electronic book providing server. The electronic book coupon deductordeducts an electronic worth equivalent to a price according to page data requested to be readout, from the electronic book coupon. The book data decryptordecrypts the page data in steps of one page data unit by use of the decryption key in conjunction with the deduction of the electronic worth.

Communication terminal, portable terminal, circulating server, providing server, electronic book distributing method, and electronic book distributing program

Growing community of inventors

Yokohama, Japan

Kazuhiko Ishii