中文摘要：

文章针对R F ID系统中标签所有权转换过程中的安全问题，提出一种用于对标签进行授权访问和所有权转换的协议，采用GNY逻辑分析了该协议的安全性，比较了该协议的计算复杂度。分析结果表明：该协议具有良好的安全性，能够为通过认证的用户提供访问次数受限的授权，以及对标签的所有权进行转换；保护标签所有权转换过程中的前向安全和后向安全，能够抵御重放攻击、中间人攻击和去同步化攻击；与现有研究成果相比，该协议中标签的计算消耗较小，适用于低成本标签。

英文摘要：

A delegation and ownership transfer protocol of tag is proposed to protect the process of ownership transfer of tag in radio frequency identification （RFID） system .The security of this proto-col is analyzed by using GNY logic and its computational complexity is compared with that of other protocols .The result indicates that the protocol has good security .It can provide limited delegation for authenticated users and ownership transfer of tag .It also provides forward and backward security during the procedure of ow nership transfer ,and resists replay attack ,man-in-middle attack and de-synchronization attack .Meanwhile ,the computation amount of tag in the protocol is less compared with some existing research results .It is suitable for low-cost RFID tag .