An Anonymous Identity-based Encryption Scheme in the Standard Model

doi:10.3969/j.issn.1671-1122.2018.04.010

Abstract

Abstract:

Aiming at the problem that most of the current identity-based encryptionsare not anonymous, we have proposed a new anonymous identity-based encryption scheme.The new IBE scheme uses bilinear group of composite order. Based on the DBDH(Decisional Bilinear Diffie-Hellman) assumption, it has ANON-IND-sID-CPA security under the standard model.On the other hand,our IBE scheme is anonymous,which means the adversary cannot get any information about the plaintext or receiver’s identity from the ciphertext. In addition,this paper verified the correctness of the scheme and proved the security.Compared to a few of IBE schemes,our new IBE scheme has certain advantages on anonymity and efficiency.

Key words: identity-based encryption, anonymous, DBDH assumption, group of composite order, bilinear map

CLC Number:

TP309

Yimin XIA, Chungen XU, Bennian DOU. An Anonymous Identity-based Encryption Scheme in the Standard Model[J]. Netinfo Security, 2018, 18(4): 72-78.

Figures/Tables 1

References 18

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