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Publication Detail
Key-versatile signatures and applications: RKA, KDM and joint Enc/Sig
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Conference Proceeding
  • Authors:
    Bellare M, Meiklejohn S, Thomson S
  • Publication date:
    01/01/2014
  • Pagination:
    496, 513
  • Journal:
    Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
  • Volume:
    8441 LNCS
  • Status:
    Published
  • Print ISSN:
    0302-9743
Abstract
This paper introduces key-versatile signatures. Key-versatile signatures allow us to sign with keys already in use for another purpose, without changing the keys and without impacting the security of the original purpose. This allows us to obtain advances across a collection of challenging domains including joint Enc/Sig, security against related-key attack (RKA) and security for key-dependent messages (KDM). Specifically we can (1) Add signing capability to existing encryption capability with zero overhead in the size of the public key (2) Obtain RKA-secure signatures from any RKA-secure one-way function, yielding new RKAsecure signature schemes (3) Add integrity to encryption while maintaining KDM-security. © 2014 International Association for Cryptologic Research.
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