Wildcarded Identity-Based Encryption

Abstract : In this paper, we introduce a new primitive called identity-based encryption with wildcards, or WIBE for short. It allows a sender to encrypt messages to a whole range of receivers whose identities match a certain pattern. This pattern is defined through a sequence of fixed strings and wildcards, where any string can take the place of a wildcard in a matching identity. Our primitive can be applied to provide an intuitive way to send encrypted email to groups of users in a corporate hierarchy. We propose a full security notion and give efficient implementations meeting this notion under different pairing-related assumptions, both in the random oracle model and in the standard model.
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Journal of Cryptology, Springer Verlag, 2011, 24 (1), pp.42-82. 〈10.1007/s00145-010-9060-3〉
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https://hal.inria.fr/hal-00915848
Contributeur : Michel Abdalla <>
Soumis le : lundi 9 décembre 2013 - 13:55:40
Dernière modification le : jeudi 11 janvier 2018 - 06:22:10

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Michel Abdalla, James Birkett, Dario Catalano, Alexander W. Dent, John Malone-Lee, et al.. Wildcarded Identity-Based Encryption. Journal of Cryptology, Springer Verlag, 2011, 24 (1), pp.42-82. 〈10.1007/s00145-010-9060-3〉. 〈hal-00915848〉

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