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Paper Abstract and Keywords
Presentation 2022-07-20 16:40
Efficient Constructions of Adaptively and CCA-secure Identity-based Encryption with Equality Test from LWE Assumption in the Standard Model
Kyoichi Asano (UEC/NICT), Keita Emura (NICT), Atsushi Takayasu (Univ. Tokyo) ISEC2022-29 SITE2022-33 BioX2022-54 HWS2022-29 ICSS2022-37 EMM2022-37
Abstract (in Japanese) (See Japanese page) 
(in English) Identity-based Encryption with Equality Test (IBEET) is an extension of identity-based Encryption (IBE) that can check the plaintext equality of two distinct ciphertexts.
Thus far, known lattice-baesd IBEET schemes do not purely satisfy adaptive security and CCA security, simultaneously.
In this paper, we propose the first adaptive and CCA-secure lattice-based IBEET schemes.
Moreover, the proposed schemes based on Yamada's scheme and Jager-Kurek-Niehues's scheme have shorter public keys than known adaptive and CPA-secure schemes.
Keyword (in Japanese) (See Japanese page) 
(in English) identity-based encryption with equality test / standard model / adaptive CCA security / LWE assumption / / / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 122, ISEC2022-29, pp. 131-138, July 2022.
Paper # ISEC2022-29 
Date of Issue 2022-07-12 (ISEC, SITE, BioX, HWS, ICSS, EMM) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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Download PDF ISEC2022-29 SITE2022-33 BioX2022-54 HWS2022-29 ICSS2022-37 EMM2022-37

Conference Information
Committee EMM BioX ISEC SITE ICSS HWS IPSJ-CSEC IPSJ-SPT 
Conference Date 2022-07-19 - 2022-07-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To ISEC 
Conference Code 2022-07-EMM-BioX-ISEC-SITE-ICSS-HWS-CSEC-SPT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Efficient Constructions of Adaptively and CCA-secure Identity-based Encryption with Equality Test from LWE Assumption in the Standard Model 
Sub Title (in English)  
Keyword(1) identity-based encryption with equality test  
Keyword(2) standard model  
Keyword(3) adaptive CCA security  
Keyword(4) LWE assumption  
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1st Author's Name Kyoichi Asano  
1st Author's Affiliation The University of Electro-Communications/National Institute of Information and Communications Technology (UEC/NICT)
2nd Author's Name Keita Emura  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Atsushi Takayasu  
3rd Author's Affiliation The University of Tokyo (Univ. Tokyo)
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Speaker
Date Time 2022-07-20 16:40:00 
Presentation Time 25 
Registration for ISEC 
Paper # ISEC2022-29, SITE2022-33, BioX2022-54, HWS2022-29, ICSS2022-37, EMM2022-37 
Volume (vol) 122 
Number (no) no.122(ISEC), no.123(SITE), no.124(BioX), no.125(HWS), no.126(ICSS), no.127(EMM) 
Page pp.131-138 
#Pages
Date of Issue 2022-07-12 (ISEC, SITE, BioX, HWS, ICSS, EMM) 


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