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Publication Detail
Transparency overlays and applications
  • Publication Type:
    Conference
  • Authors:
    Chase M, Meiklejohn S
  • Publication date:
    28/10/2016
  • Pagination:
    168, 179
  • Published proceedings:
    Proceedings of the ACM Conference on Computer and Communications Security
  • Volume:
    24-28-October-2016
  • ISBN-13:
    9781450341394
  • Status:
    Published
  • Print ISSN:
    1543-7221
Abstract
© 2016 Copyright held by the owner/author(s). Publication rights licensed to ACM.In this paper, we initiate a formal study of transparency, which in recent years has become an increasingly critical requirement for the systems in which people place trust. We present the abstract concept of a transparency overlay, which can be used in conjunction with any system to give it provable transparency guarantees, and then apply the overlay to two settings: Certificate Transparency and Bitcoin. In the latter setting, we show that the usage of our transparency overlay eliminates the need to engage in mining and allows users to store a single small value rather than the entire blockchain. Our transparency overlay is generically constructed from a signature scheme and a new primitive we call a dynamic list commitment, which in practice can be instantiated using a collision-resistant hash function.
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