摘要
目前属性基认证方案主要是基于Shaimr的拉格朗日插值多项式进行构造的,这些方案要求认证双方所具备的相同属性个数超过某一阈值,该阈值由拉格朗日插值多项式次数决定,在一次构造中阈值唯一且不可修改。鉴于此,在矢量空间的基础上进行了新的属性基认证方案构造,打破了阈值对认证算法的限制,通过引入线性秘密分享中的授权子集,该方案无需限定属性个数,可以灵活地对被认证者进行模糊属性集定义,所有符合授权子集属性的用户均可通过认证。对新方案稍作调整,还可完成模糊属性签名运算。
Attribute-based authentication schemes are mainly structed on the basis of Lagrange interpolation polyno- mial which is firstly used to realize distributed encryption by Shaimr. In these schemes, there is a threshold that the same attributes number of participants of authentication must be greater than or equal to it, and moreover, this threshold is tmalterale during once system generation. In consideration of these facts, a new attribute-besed authenti- cation scheme is presented which is structed on vector spase. By way of building access control structure, the new scheme can design the authentication participants＇ with access control structe can be certified properly can complete fuzzy attribute signature. fuzzy attributes flexibly, and everyone whose attributes accord Finally through the new scheme with a slight adjustment, it also
出处
《计算机工程与应用》
CSCD
2012年第19期4-7,共4页
Computer Engineering and Applications
基金
国家高技术研究发展计划(863)(No.2008AA706103)
航空科学基金资助项目(No.2010ZC13012)
关键词
模糊属性
矢量空间
认证
签名
fuzzy attributes
vector space
authenticate
signature
