The search functionality is under construction.

The search functionality is under construction.

An *anonymous* identity based encryption (anonymous IBE) scheme requires that an adversary can not determine the identity of the recipient from a ciphertext encrypted by the corresponding public key. The anonymity was formalized in previous works [1],[13], and this can be considered under chosen plaintext attack and adaptive chosen ciphertext attack, yielding two notions of security, ID-II-CPA and ID-II-CCA, where II denotes "indistinguishability of identities." However, how to obtain an ID-II-CCA secure anonymous IBE in the random oracle model is still a challenging problem. We firstly propose a new notion of plaintext awareness in the two identities setting, called PATI. Secondly, we prove that the IBE scheme is ID-II-CCA secure if it is PATI secure. Finally, we propose the first generic conversion for anonymous IBE from ID-II-CPA to ID-II-CCA in the random oracle model.

- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E91-A No.12 pp.3828-3832

- Publication Date
- 2008/12/01

- Publicized

- Online ISSN
- 1745-1337

- DOI
- 10.1093/ietfec/e91-a.12.3828

- Type of Manuscript
- LETTER

- Category
- Cryptography and Information Security

The copyright of the original papers published on this site belongs to IEICE. Unauthorized use of the original or translated papers is prohibited. See IEICE Provisions on Copyright for details.

Copy

Changlu LIN, Yong LI, Qiupu ZHANG, Dingfeng YE, "Anonymous Identity Based Encryption with Plaintext Awareness in the Two Identities Setting" in IEICE TRANSACTIONS on Fundamentals,
vol. E91-A, no. 12, pp. 3828-3832, December 2008, doi: 10.1093/ietfec/e91-a.12.3828.

Abstract: An *anonymous* identity based encryption (anonymous IBE) scheme requires that an adversary can not determine the identity of the recipient from a ciphertext encrypted by the corresponding public key. The anonymity was formalized in previous works [1],[13], and this can be considered under chosen plaintext attack and adaptive chosen ciphertext attack, yielding two notions of security, ID-II-CPA and ID-II-CCA, where II denotes "indistinguishability of identities." However, how to obtain an ID-II-CCA secure anonymous IBE in the random oracle model is still a challenging problem. We firstly propose a new notion of plaintext awareness in the two identities setting, called PATI. Secondly, we prove that the IBE scheme is ID-II-CCA secure if it is PATI secure. Finally, we propose the first generic conversion for anonymous IBE from ID-II-CPA to ID-II-CCA in the random oracle model.

URL: https://global.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e91-a.12.3828/_p

Copy

@ARTICLE{e91-a_12_3828,

author={Changlu LIN, Yong LI, Qiupu ZHANG, Dingfeng YE, },

journal={IEICE TRANSACTIONS on Fundamentals},

title={Anonymous Identity Based Encryption with Plaintext Awareness in the Two Identities Setting},

year={2008},

volume={E91-A},

number={12},

pages={3828-3832},

abstract={An *anonymous* identity based encryption (anonymous IBE) scheme requires that an adversary can not determine the identity of the recipient from a ciphertext encrypted by the corresponding public key. The anonymity was formalized in previous works [1],[13], and this can be considered under chosen plaintext attack and adaptive chosen ciphertext attack, yielding two notions of security, ID-II-CPA and ID-II-CCA, where II denotes "indistinguishability of identities." However, how to obtain an ID-II-CCA secure anonymous IBE in the random oracle model is still a challenging problem. We firstly propose a new notion of plaintext awareness in the two identities setting, called PATI. Secondly, we prove that the IBE scheme is ID-II-CCA secure if it is PATI secure. Finally, we propose the first generic conversion for anonymous IBE from ID-II-CPA to ID-II-CCA in the random oracle model.},

keywords={},

doi={10.1093/ietfec/e91-a.12.3828},

ISSN={1745-1337},

month={December},}

Copy

TY - JOUR

TI - Anonymous Identity Based Encryption with Plaintext Awareness in the Two Identities Setting

T2 - IEICE TRANSACTIONS on Fundamentals

SP - 3828

EP - 3832

AU - Changlu LIN

AU - Yong LI

AU - Qiupu ZHANG

AU - Dingfeng YE

PY - 2008

DO - 10.1093/ietfec/e91-a.12.3828

JO - IEICE TRANSACTIONS on Fundamentals

SN - 1745-1337

VL - E91-A

IS - 12

JA - IEICE TRANSACTIONS on Fundamentals

Y1 - December 2008

AB - An *anonymous* identity based encryption (anonymous IBE) scheme requires that an adversary can not determine the identity of the recipient from a ciphertext encrypted by the corresponding public key. The anonymity was formalized in previous works [1],[13], and this can be considered under chosen plaintext attack and adaptive chosen ciphertext attack, yielding two notions of security, ID-II-CPA and ID-II-CCA, where II denotes "indistinguishability of identities." However, how to obtain an ID-II-CCA secure anonymous IBE in the random oracle model is still a challenging problem. We firstly propose a new notion of plaintext awareness in the two identities setting, called PATI. Secondly, we prove that the IBE scheme is ID-II-CCA secure if it is PATI secure. Finally, we propose the first generic conversion for anonymous IBE from ID-II-CPA to ID-II-CCA in the random oracle model.

ER -