University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Group Signature with Constant Revocation Costs for Signers and Verifiers

Fan, CI, Hsu, RH and Manulis, M Group Signature with Constant Revocation Costs for Signers and Verifiers In: 10th CANS 2011, 2011-12-10 - 2009-12-12, Sanya, China.

[img] Text
Restricted to Repository staff only
Available under License : See the attached licence file.

Download (331kB)
[img] Text (licence)
Restricted to Repository staff only

Download (33kB)


Membership revocation, being an important property for applications of group signatures, represents a bottleneck in today’s schemes. Most revocation methods require linear amount of work to be performed by unrevoked signers or verifiers, who usually have to obtain fresh update information (sometimes of linear size) published by the group manager. We overcome these disadvantages by proposing a novel group signature scheme, where computation costs for unrevoked signers and potential verifiers remain constant, and so is the length of the update information that must be fetched by these parties from the data published by the group manager. We achieve this complexity by increasing the amount of work at the group manager’s side, which growths quadratic with the total number of members. This increase is acceptable since algorithms of the group manager are typically executed on resourceful devices. Our scheme uses a slightly modified version of the pairing-based dynamic accumulator, introduced by Camenisch, Kohlweiss, and Soriente (PKC 2009), which we implicitly combine with the short (non-revocable) group signature scheme by Boneh, Boyen, and Shacham (CRYPTO 2004). We prove that our revocable scheme satisfies the desired security properties of anonymity, traceability, and non-frameability in the random oracle model, although for better efficiency we resort to a somewhat stronger hardness assumption.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions : Surrey research (other units)
Authors : Fan, CI, Hsu, RH and Manulis, M
DOI : 10.1007/978-3-642-25513-7_16
Contributors :
Depositing User : Symplectic Elements
Date Deposited : 28 Mar 2017 13:43
Last Modified : 23 Jan 2020 12:57

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800