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A Weak Password Cracker of UHF RFID Tags

Under the ISO/IEC 18000-6C protocol of UHF RFID an electronic tag's information security is based on password protection, but its natural defect is unable to reject brute tests which can be exhaustive. By the protocol analysis, this article theoretically proves that tags' weak passwords can be cracked. Combined with a concrete Tag-Interrogator module a method for improving the cracking efficiency is given out with a special concise password library. Furthermore this paper implements the password cracker has carried on the exploration of distributed detection. By this method most electronic tags' passwords can be cracked within one week. The ultimate goal of this paper is to remind that UHF RFID industry projects should enhance the security level of tag's password practically.