In this paper, we introduce Attribute-Based Signatures with User-Controlled Linkability (ABS-UCL). Attribute-based signatures allow a signer who has enough credentials/attributes to anonymously sign a message w.r.t. some public policy revealing neither the attributes used nor his identity. User-controlled linkability is a new feature which allows a user to make some of his signatures directed at the same recipient linkable while still retaining anonymity. Such a feature is useful for many real-life applications. We give a general framework for constructing ABS-UCL and present an efficient instantiation of the construction that supports multiple attribute authorities.
|Title of host publication||Cryptology and Network Security, CANS 2014|
|Publisher||Springer Berlin Heidelberg|
|Number of pages||14|
|Publication status||Published - 2014|
Ghadafi, E. M. O., El Kaafarani, A., Liqun, C., & Davenport , J. (2014). Attribute-Based Signatures with User-Controlled Linkability. In Cryptology and Network Security, CANS 2014 (Vol. 8813, pp. 256-269). Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-319-12280-9_17