Reader and transponder for obscuring the applications supported by a reader and/or a transponder and method thereof

一种应答器、读取器的技术，应用在应答器领域，能够解决不支持多应用读取器、耗时等问题，达到保护私密性的效果

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

AI Technical Summary

Problems solved by technology

[0010] However, the method described uses rather time-consuming experimental verification
Also, the method described does not support multi-application readers

Method used

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  • Reader and transponder for obscuring the applications supported by a reader and/or a transponder and method thereof
  • Reader and transponder for obscuring the applications supported by a reader and/or a transponder and method thereof
  • Reader and transponder for obscuring the applications supported by a reader and/or a transponder and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] The depiction in the figure is schematic. In different figures, similar or identical elements are provided with the same reference signs.

[0082] figure 1 A flow of messages between a reader 102 and a smart card 104 forming a communication system 100 according to an example embodiment of the invention is shown.

[0083] As explained in further detail below, during the communication between the reader 102 and the smart card 104, a number of communication messages are exchanged.

[0084] exist figure 1 In step 1 of the communication scheme (see reference numeral 120), the reader 102 evaluates which smart cards are within its radio range and finally selects one of them in an anti-collision procedure (which is known per se). The selected one smart card is the transponder 104 .

[0085] In step 2 (see reference number 130 ), the reader 120 sends a command to the smart card 104 containing information about the applications supported by the reader 102 . In this example, ...

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PUM

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Abstract

Transponder (104), comprising a storage unit (106) having stored a number of different applications, a processing unit (108) which, on request of a reader (102), is adapted to generate a response interpretable using an encryption scheme known by both the transponder (104) and the reader (102) so that the reader (102) is capable of determining whether an application is supported by the transponder (104) by analyzing the response using the encryption scheme, and a transmission unit (110) adapted to send the response to said reader (102).

Description

technical field [0001] The invention relates to a transponder storing a plurality of different applications; a reader designed to decrypt data received from the transponder; and a method for masking the applications supported by the reader and / or the transponder. Furthermore, the invention relates to program elements. The present invention also relates to computer readable media. Background technique [0002] Information transmitted between a reader and a transponder (especially a smart card or RFID tag) is encrypted so that an attacker cannot obtain the data and use it to commit a crime. For personal data, account data, credit card numbers, etc., the use of this encryption is fairly obvious. Since newer smart cards can emulate more smart cards, ie support many different applications, the supported applications should be masked. Its use is not obvious a priori. However, consider a card that supports apps from "Visa", "Amex", "Walmart" and "New York Metro" and this use be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K19/077G06F21/60G06F21/62
CPCG06K19/0719G06K19/07749
Inventor 苏珊·斯顿保罗·胡伯默尔彼得·蒂林格布鲁斯·默里海克·诺伊曼汉斯·德容
Owner NXP BV
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