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\(k\)-resilient identity-based encryption in the standard model. (English) Zbl 1196.94056
Okamoto, Tatsuaki (ed.), Topics in cryptology – CT-RSA 2004. The cryptographers’ track at the RSA conference 2004, San Francisco, CA, USA, February 23–27, 2004. Proceedings. Berlin: Springer (ISBN 3-540-20996-4/pbk). Lecture Notes in Computer Science 2964, 67-80 (2004).
Summary: We present and analyze an adaptive chosen ciphertext secure (IND-CCA) identity-based encryption scheme (IBE) based on the well studied Decisional Diffie-Hellman (DDH) assumption. The scheme is provably secure in the standard model assuming the adversary can corrupt up to a maximum of \(k\) users adaptively. This is contrary to the Boneh-Franklin scheme which holds in the random-oracle model.
For the entire collection see [Zbl 1049.94004].

94A60 Cryptography
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