Welcome to the resource topic for 2015/400
Title:
Expiration and Revocation of Keys for Attribute-based Signatures (Full Version)
Authors: Stephen R. Tate, Roopa Vishwanathan
Abstract:Attribute-based signatures, introduced by Maji \emph{et al.}, are signatures that prove that an authority has issued the signer ``attributes’’ that satisfy some specified predicate. In existing attribute-based signature schemes, keys are valid indefinitely once issued. In this paper, we initiate the study of incorporating time into attribute-based signatures, where a time instance is embedded in every signature, and attributes are restricted to producing signatures with times that fall in designated validity intervals. We provide three implementations that vary in granularity of assigning validity intervals to attributes, including a scheme in which each attribute has its own independent validity interval, a scheme in which all attributes share a common validity interval, and a scheme in which sets of attributes share validity intervals. All of our schemes provide anonymity to a signer, hide the attributes used to create the signature, and provide collusion-resistance between users.
ePrint: https://eprint.iacr.org/2015/400
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .