System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking

一种固定标识、应答器的技术，应用在应答器领域，达到保持唯一性的效果

Inactive Publication Date: 2011-05-04
NXP BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In most cases this is not desired by the card owner

Method used

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  • System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking
  • System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking
  • System of providing a fixed identification of a transponder while keeping privacy and avoiding tracking

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Embodiment Construction

[0050] The descriptions in the figures are schematic. In different figures, similar or identical elements are provided with the same reference signs.

[0051] In the following description, the following abbreviations are specifically used:

[0052] PICC Proximity Card (Smart Card)

[0053] UID unique identifier

[0054] PCD Proximity Coupling Device (Reader)

[0055] SAK selects acknowledgment

[0056] NVB effective bits

[0057] SEL selection code

[0058] based on figure 1 Smart card PICC 180 shown and figure 2 The message flow of the smart card PICC 180 and the reader PCD 160 is shown, and example embodiments of the present invention are explained below.

[0059] now refer to figure 1 , in step 1 (compare reference numeral 102), the fixed identifier LOGICAL ID 104 is extended with a random number 106, in particular a random number derived from the output of the pseudo-random number generator PRNG.

[0060] In step 2 (compare reference numeral 108), the installati...

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PUM

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Abstract

Transponder (180) having stored a fixed identification number, which expands said identification number with a random number, encrypts said expanded number with a key, and sends it to a reader (160) on its request. Reader (160), which on request receives an encrypted number from a transponder (180), decrypts a received encrypted number with a key, which was also used by the transponder (180), and extracts a fixed identification number associated with the transponder (180).

Description

technical field [0001] This application claims priority from the filing date of European Patent Application No. 08104089.1, filed on May 26, 2008, the disclosure of which is incorporated herein by reference. [0002] The present invention relates to a transponder storing a fixed identification number, a reader for receiving an encrypted number from a transponder based on a request, a method for sending a fixed representation number to a reader, a method for receiving an encrypted number from a reply The method by which the server receives the encrypted number. Furthermore, the invention relates to a program element. Furthermore, the present invention relates to a computer readable medium. Furthermore, the present invention relates to a communication system. Background technique [0003] The smart card can store a unique identification number (UID), and the smart card can be clearly identified by using the UID. The reader may select a particular smart card and communicate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F21/00G06F21/35G06F21/44G06F21/62G06F21/83
CPCG06F21/35G06F21/445G06F21/6245G06F21/83G06F2221/2129G06F2221/2107
Inventor 苏珊·斯顿保罗·胡伯默尔彼得·蒂林格海克·诺伊曼布鲁斯·默里汉斯·德容
Owner NXP BV
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