METHOD AND SYSTEM FOR SUPPLYING TARGET INFORMATION

• US 20110248852A1
• Filed: 09/08/2009
• Published: 10/13/2011
• Est. Priority Date: 12/10/2008
• Status: Active Grant

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Köpf, Andreas, Falk, Rainer, Seuschek, Hermann
• Granted Patent: US 8,981,935 B2
• Time in Patent Office: Days
• US Class Current: 340/572.1
• CPC Class Codes: G06F 16/955 using information identifiers, e.g. uniform resource locators [URL]
• CPC Class Codes: G06K 17/00 Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
• CPC Class Codes: G06K 7/10108 interrogating only those RFIDs that fulfill a predetermined requirement, e.g. selecting all RFIDs having the same speed and moving in a cloud like fashion, e.g. on the same train; interrogating only RFIDs having a certain predetermined temperature, e.g. in the same fridge, another possibility being the active ignoring of a group of tags that fulfill a predetermined requirement, equivalent to the Boolean NOT operation
• CPC Class Codes: G06Q 10/08 Logistics, e.g. warehousing, loading or distribution; Inventory or stock management
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/0492 by using a location-limited connection, e.g. near-field communication or limited proximity of entities
• CPC Class Codes: H04L 63/06 for supporting key management in a packet data network cryptographic mechanisms or cryptographic arrangements for key management H04L9/08
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838

Abstract

In a method and a system (1) for providing target information of an event message for an event occurring at a tag reader (2), the target information is extracted from a signed digital certificate of a tag (4). The event is triggered at a tag reader (2) and can be evaluated by a target computer (6), for example a server. The method and system enhance reconfiguration flexibility and also increase security against manipulation.

Claims

1. A method for providing at least one piece of target information of an event message for an event occurring at a tag reader,

wherein the target information (ZA) is extracted from a signed digital certificate of a tag, wherein the target information comprises the target information of another tag and the event is reported to the other tag on the basis of the target information in order to transfer payload data from the tag to the other tag.

2. The method according to claim 1,

wherein the event message is forwarded via a network to at least one target computer which is addressed by means of the target information.

3. The method according to claim 1,

wherein the event message has a tag ID of the tag and a reader ID of the tag reader.

4. The method according to claim 1,

wherein the event message contains information data which includes location data of the tag reader, an event time and the payload data provided by the tag.

5. The method according to claim 1,

wherein an event triggered by a tag is reported in an associated event message to the target computer addressed by the target information provided the tag is authenticated by the tag reader by means of a public tag key which is extracted from the signed certificate which is transmitted from the respective tag to the tag reader.

6. The method according to claim 1,

wherein the event triggered by a tag consists of a base event in the form of a data access to the tag or an application-specific event of an application program.

7. The method according to claim 1,

wherein the extracted target information has at least one target address which consists of a URL address, an IP address or a MAC address of a target computer.

8. The method according to claim 1,

wherein the extracted target information is a compressed mapping value which references a target address stored in a memory.

9. A system for providing at least one piece of target information of an event message for an event occurring at a tag reader, wherein the target information is contained in a signed digital certificate of a tag, wherein the target information comprises the target information of another tag and the event is reported to the other tag on the basis of the target information in order to transfer payload data from the tag to the other tag.

10. The system according to claim 9,

wherein the event message includes a data packet which may be forwarded via at least one network to a target computer which is addressed by the target information.

11. The system according to claim 9,

wherein the event message contains information data which includes location data of the tag reader, an event time and the payload data provided by a tag.

12. The system according to claim 9,

wherein the tag reader is mobile in terms of its location and has a location detection device for generating location data.

13. A tag for a system according to claim 9,

wherein the tag comprises

a radio interface for exchanging data with the tag reader,

a nonvolatile memory having a reserved memory area for a signed digital certificate and having an unreserved memory area for payload data, and

an authentication unit for authenticating the tag.

14. The tag according to claim 13,

wherein the tag comprises at least one sensor for generating sensor payload data.

15. The tag according to claim 13,

wherein the tag is an RFID tag which is attached to product packaging or to a product, or is integrated in a product.

16. The tag according to claim 13,

wherein the event message includes a data packet which may be forwarded via at least one network to a target computer which is addressed by the target information.

17. The tag according to claim 13,

wherein the event message contains information data which includes location data of the tag reader, an event time and the payload data provided by a tag.

18. The tag according to claim 13,

wherein the tag reader is mobile in terms of its location and has a location detection device for generating location data.