RFID Technologies for Internet of Things by Min Chen & Shigang Chen

Author:Min Chen & Shigang Chen
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

3.4.2 Overview

Let an arbitrary tag t in the system be pre-installed with u base tokens, denoted by [bt 1, bt 2, …, bt u ], each being a-bit long. These base tokens can be used to derive dynamic tokens for authentication. In addition, we introduce another type of auxiliary keys called base indicators to generate indicators that support the derivation of dynamic tokens. Suppose t stores v base indicators denoted by [bi 1, bi 2, …, bi v ], each being b-bit long. Let tk represent the current a-bit token, and ic be the current b-bit indicator. All the base tokens, base indicators, token, and indictor are also stored at the central server. Our idea is to let the reader and the tag independently generate the same random tokens by following the instruction encoded in the indicator. TAP consists of three phases: initialization phase, authentication phase, and updating phase, which will be elaborated one by one.

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