A method for searching radio frequency tags

Abstract

The invention discloses a high efficiency safety radio frequency label searching method, and relates to the radio frequency identification communication safety technical field; the method comprises the following steps: a rear database forwards index information Is to a reader; the reader broadcasts the Is to all labels in a magnetic field scope; each label receives information, compares self-stored index information I with received Is, thus determining whether the label is the target label or not; the rear database receives confirm information f forwarded by the reader, uses self secret key k and a pointer value c to calculate and compare with f, thus determining whether the searching has succeeded or not. The method uses a pseudorandom number generator to safely calculate labels with low cost, uses the pointer value to synchronize a server with labels, and uses an index information updating method to protect label privacy and authentication; in the whole process, the rear database and labels only need to have the pseudorandom number generator capability, so the searching method is efficient and safe.

Description

technical field The invention relates to the technical field of radio frequency identification communication security, in particular to a method for searching radio frequency tags. Background technique Radio Frequency Identification (RFID) is a non-contact automatic identification technology, which uses radio frequency communication to identify specific target objects. Because RFID technology has the advantages of small size, good durability, strong anti-pollution ability, large memory capacity, easy operation, suitable for harsh environments and non-contact automatic identification, it is widely used in various fields of life and production. At present, the security authentication protocol of RFID technology has been widely studied, and the RFID tag search method, as an extension of the RFID tag authentication protocol, is a new protocol in the field of RFID and has very high research value. It requires the reader to quickly and safely search out the specific tags it needs...

AI Technical Summary

Problems solved by technology

However, most of the existing RFID tag search methods have been found to have some defects

These flaws may be that the protocol has a privacy security threat, it may be that the search efficiency of the protocol is low, it may be that the tags used in the protocol are expensive, or it may be a combination of the three

Images