System and method for radio-frequency fingerprinting as a security layer in RFID devices

摘要

A system and method for authenticating a radio-frequency identification tags based on the features of the modulation features of the RFID signal. Dynamic wavelet fingerprint features are extracted from the signal by applying a wavelet transform to the signal to determine wavelet coefficients at a plurality of times and frequency scale values, creating a binary image from the wavelet coefficients, and measuring image features of at least one fingerprint object in the binary image. The measured features of the binary image fingerprint objects are compared to a database of features for the signal's EPC to authenticate the RFID tag.

主权项

1. A method for determining authenticity of a radio frequency identification tag encoded with an EPC, the method comprising:
receiving a signal from the radio frequency identification tag; extracting features from the signal, wherein said extracting features includes
applying a wavelet transform to the signal to determine wavelet coefficients at a plurality of times and frequency scale values,slicing the wavelet coefficients at different amplitudes and projecting the resulting slices onto a time-scale plane or a time-frequency plane to create binary images consisting of on and off pixels,segmenting each binary image into a plurality of regions for further analysis, each region having at least one concentric loop, andmeasuring image features of the regions in each binary image; and comparing the measured image features to a database of features for the signal's EPC to classify the RFID tag as being authentic or not authentic.