Encryption and decryption method and encryption and decryption device of multi-data security module

A security module and data security technology, applied in the field of information security, can solve the problems of low security, limited application of RFID technology, poor security of passive RFID cards, etc.
CN102291241AActive Publication Date: 2011-12-21重庆市城投金卡信息产业(集团)股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
重庆市城投金卡信息产业(集团)股份有限公司
Publication Date
2011-12-21

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Abstract

The invention discloses an encryption and decryption method and device for a multi-data security module, which are invented to overcome the defects of poor security and unavailability of controlling the permission of every bit of an RFID (Radio Frequency Identification Device) by using a PSAM (Pilot Symbol Assisted Modulation) card existing in the conventional passive RFID card. The encryption and decryption method comprises the following steps of: initializing the RFID card to obtain a first right and a second right of application space control information of the RFID card; and encrypting the RFID card through the first right and the second right of the application space control information. The security problem of a passive RFID can be solved; and the permission of every bit of the RFID is controlled by using the PASM card, and password access is separated from right control, so that the effects of distributing and autonomously managing the internal storage space of the RFID are achieved flexibly.
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Description

technical field

[0001] The invention relates to the technical field of information security, in particular to an encryption and decryption method and an encryption and decryption device of a multi-data security module. Background technique

[0002] Due to the passive characteristics of the 900MHz RFID (Radio Frequency Identification, radio frequency identification) card, it solves the problem of battery life in RFID applications, and the cost is relatively low, but at the same time, due to its inaccessible characteristics, the security is low. As long as you have Access Password ( Access key) can fully control the RFID card, and the existing equipment cannot be widely used in projects such as intelligent transportation, vehicle management, and non-stop charging.

[0003] The prior art has the following defects. The security of the passive RFID card is poor, and the PSAM (Purchase Secure Access Module, point-of-sale terminal security access module) card cannot be used to con...

Claims

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