Anonymous HIBE with short ciphertexts: full security in prime order groups
نویسندگان
چکیده
منابع مشابه
Anonymous HIBE with short ciphertexts: full security in prime order groups
Anonymous Hierarchical Identity-Based Encryption (HIBE) is an extension of Identity-Based Encryption (IBE), and it provides not only a message hiding property but also an identity hiding property. Anonymous HIBE schemes can be applicable to anonymous communication systems and public key encryption systems with keyword searching. However, previous anonymous HIBE schemes have some disadvantages t...
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We construct a fully secure HIBE scheme with short ciphertexts. The previous con-struction of Boneh, Boyen, and Goh was only proven to be secure in the selective model,under a non-static assumption which depended on the depth of the hierarchy. To obtainfull security, we apply the dual system encryption concept recently introduced by Waters.A straightforward application of this t...
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Lewko and Waters [Eurocrypt 2010] presented a fully secure HIBE with short ciphertexts. In this paper we show how to modify their construction to achieve anonymity. We prove the security of our scheme under static (and generically secure) assumptions formulated in composite order bilinear groups. In addition, we present a fully secure Anonymous IBE in the secret-key setting. Secret-Key Anonymou...
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We construct a fully secure HIBE scheme with short ciphertexts. The previous con-struction of Boneh, Boyen, and Goh was only proven to be secure in the selective model,under a non-static assumption which depended on the depth of the hierarchy. To obtainfull security, we apply the dual system encryption concept recently introduced by Waters.A straightforward application of this t...
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ژورنال
عنوان ژورنال: Designs, Codes and Cryptography
سال: 2013
ISSN: 0925-1022,1573-7586
DOI: 10.1007/s10623-013-9868-6