Abstract: Radio Frequency Identification(RFID) tags have the advantages of concealment, convenience and high efficiency, and can be used as new carriers of secret storage. Aiming at implementing secret sharing in RFID tags group, this paper proposes a verifiable threshold secret sharing scheme, which is fit for RFID system, and analyzes its security features. According to characteristics of RFID system, the first authenticating then reading implementing principle is suggested. The security of this scheme is based on the mutual authentication of reader and tags and the difficulty of computing the discrete logarithm modulo for a composite number.

Key words: Radio Frequency Identification(RFID), secret sharing, threshold scheme, discrete logarithm, zero-knowledge

摘要： 无线射频识别(RFID)标签具有隐蔽、方便、高效等优点，可以作为秘密存储的新载体。该文针对如何在RFID标签组中实现秘密共享的问题，提出适用于RFID系统的可验证门限秘密共享方案，对其进行安全性分析。根据RFID系统的特点提出先认证后读取的实现原则。该方案的安全性基于RFID阅读器与标签的双向认证以及求解离散对数的困难性。

关键词: 无线射频识别, 秘密共享, 门限方案, 离散对数, 零知识

CLC Number: 

• TP309