Release time:2025-03-31

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DOI number:10.13328/j.cnki.jos.007092

Journal:软件学报

Place of Publication:北京,中国

Key Words:identity-based matchmaking encryption (IB-ME);inner-product matchmaking encryption;dual pairing vector space (DPVS);symmetric external Diffie-Hellman (SXDH) assumption

Abstract:Identity-based matchmaking encryption is a new cryptographic primitive that allows both the receiver and the sender to specify each other’s identity and communicate with each other only when the identities match. Meanwhile, it provides a non-interactive secret handshake protocol to get rid of real-time interaction and further improve participant privacy. This study proposes an identity-based matchmaking encryption (IB-ME) scheme in prime-order groups under symmetric external Diffie-Hellman (SXDH) assumption under the standard model. Realizing short parameters and reducing the matchmaking times during decryption are the most efficient identity-based matchmaking encryption scheme. Additionally, this study also puts forward the first inner product with equality matchmaking encryption (IPE-ME) scheme under the SXDH assumption in the standard model. Technically, it first constructs two schemes in composite-order groups, then simulates them with dual pairing vector space (DPVS) into prime-order groups, and further reduces the parameter size by decreasing the required dimension of dual basis. Finally, for the proposed IPE-ME scheme, this study replaces the equality policy in the first layer of an IB-ME scheme with inner-product policy.

Co-author:楚乔涵,杜秋妍,gaoying

First Author:chenjie

Indexed by:Journal paper

Correspondence Author:杜秋妍

Volume:36

Issue:2

Page Number:698-714

ISSN No.:1000-9825

Translation or Not:no

CN No.:11-2560/TP

Date of Publication:2024-04-24