Encryption method of radio frequency card

Abstract

The invention provides an encryption method of a radio frequency card. The method comprises the following operation steps: starting a reader, enabling a radio frequency card to enter a working area, feeding back the radio frequency card, receiving a signal by a client, primarily encrypting the client, secondarily encrypting the client, transmitting data of the client, decrypting the data of a network server, checking the data of the network server and finishing the operation. The process is reasonable, a product developed according to a process is small and exquisite and has stronger functional practicability; the method can be used in combination with the Internet, different secret keys of the radio frequency card during information transmission each time are realized through an existingalgorithm, one-time pad is realized, an attacker is prevented from stealing information in the IC card by using an exhaustion method or a midway interception method, and the method has good economic benefits and social benefits in popularization and application.

Description

technical field [0001] The invention belongs to the field of electronic industry, relates to the development of radio frequency and security software, in particular to an encryption method of a radio frequency card. Background technique [0002] The communication between the radio frequency IC card and the card reader is carried out in a non-contact manner, so the radio frequency IC card has a great advantage in the large traffic passing system, such as the access control system, the traffic system and the consumer system. The information transmission between the radio frequency IC card and the card reader uses wireless communication, and the radio is a divergent high-frequency signal, which is open in a certain range of space, which also means that the information is easily transmitted during the wireless communication process. Intercepted by external equipment, therefore, when the logical encrypted radio frequency card without CPU is attacked by the simplest password, the ...

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned shortcoming of prior art, the purpose of the present invention is to provide a kind of encryption method of radio frequency card, is used to solve the same key when radio frequency card transmits information every time in the prior art, the assailant of radio frequency IC card mainly By grabbing the information in the card, illegally duplicating the card, tampering with the contents of the card, or fraudulently using other people's cards to achieve the purpose of destroying the system or stealing information, only relying on the key stored in the IC card for confidentiality, the IC card The length of the key is usually eye-catching, and it is easy to be attacked or steal information by brute force method; even if it is difficult to attack or steal information by brute force method, it is easy to attack or steal information by midway interception method

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