DES算法在RFID安全中的应用  

Application of DES Algorithm in RFID Security

作　　者：李洪旭[1] 刘宇红[1] 

机构地区：[1]贵州大学计算机科学与信息学院,贵州贵阳550025

出　　处：《通信技术》2012年第12期74-76,81,共4页Communications Technology

摘　　要：目前RFID存在许多安全隐患和问题,诸多RFID的研究者提出了他们的解决方案和思路,但是每个方案都有他们的缺陷和不足,大多数方案都需要在标签上加入硬件支持。在立足于不改变现有标签的基础之上,提出采用软加密,将过去直接以明文形式保存在标签上的数据加密并以密文形式保存在标签上,藉以保护用户隐私和防止破解者对标签数据任意修改。加密方式采用保密性很高、应用很广泛的DES加密算法。此方案不仅使用软加密,而且在软加密基础上还融入随机数和各种校验,校验了标签的合法性,防止不正当的替换和冒充,大大提高了RFID应用中的安全性。At present, RFID （Radio Frequency Identification） has many security risks and problems, and many RFID researchers propose their solutions or ideas, and each of these solutions or ideas its own flaws and shortcomings, so that the hardware support should be added to the label. This paper discusses how to realize the security and privacy of RFID application without any change on the existing label, and proposes an improved RFID security method. And with soft encryption, the data traditionally stored on the label in plain text is now encrypted and stored on the label in ciphertext, thus to protect the user＇ s privacy and prevent the modification of label data by the code breaker. The encryption of label data is done by DES algorithm with high security and broad application. Meanwhile the random unmber and various checks are also introduced into this design, thus to verify the legitimacy of the label, prevent the improper replacement and fake, and improve the security of RFID application.

关 键 词：安全隐患 加密算法 标签 软加密 

分 类 号：TN918.91[电子电信—通信与信息系统]