代理计算签名及其在RFID认证中的应用

Computing-Commission Signature and its Application in RFID Authentication

射频识别(RFID)是物联网中实现物品标识的一项关键技术,但RFID标签的计算能力十分有限,导致传统的公钥密码技术很难有效地应用到RFID认证技术中,限制了RFID的应用范围和提供服务的形式。针对读卡器和标签计算资源不对称的特点,提出一种新的签名算法——代理计算签名,将传统的签名技术中耗能的复杂运算交给读卡器(验证方)来完成,从而实现标签对消息的签名,并仍能保持签名的安全性,解决了RFID标签很难计算数字签名的困难问题。结合Rabin型数字签名和加密算法,进一步地给出了基于代理计算签名的RFID认证方案,实现了标签与读卡器间的双向认证,大大地降低了标签的实现成本。

RF1D is one of the key technologies for items identification in Inlernet of things, while the limited eomputing ability of RFID lags make it difficuh to apply traditional public key ryplography to RFID authentication efficiently, which greatly limits the scope of RFID applications and the forms of providing services. A new signature algorithm called computingcommission signature algorithm is presented aim at the character that the computing resources of ,eaders and RFID tags are asymmetric. In our signature algorithm, we leaved the complex energy-consuming computation in traditional signature algorithm to the verifier （readers） so that the signature can he generated on tags and the security of the signature is still satisfied. Our signature algorithm solved the difficuh problem of computing digital signature in RFID tags. Combining with Rahin-type signature and eneryption algorithm, a RFID authentication scheme based on computing-commission signature is further proposed, which achieved mutual authentication between readers and tags. It greatly reduced the implementation cost of tags.