Public key encryption supporting equality test and flexible authorization without bilinear pairings

2021 ◽  
Vol 170 ◽  
pp. 190-199
Author(s):  
Xi-Jun Lin ◽  
Lin Sun ◽  
Haipeng Qu ◽  
Xiaoshuai Zhang
Keyword(s):  
Bilinear Pairings ◽  
Public Key ◽  
Public Key Encryption ◽  
Equality Test

scholarly journals A Multi-User Public Key Encryption with Multi-Keyword Search out of Bilinear Pairings

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6962
Author(s):  
Shuo Zhang ◽  
Qiaoyan Wen ◽  
Wenmin Li ◽  
Hua Zhang ◽  
Zhengping Jin
Keyword(s):  
Keyword Search ◽  
Daily Life ◽  
Bilinear Pairings ◽  
User Model ◽  
Public Key ◽  
Public Key Encryption ◽  
Private Cloud ◽  
Important Data ◽  
Cloud Server ◽  
Iot Devices

Internet of Things (IoT) and cloud computing are adopted widely in daily life and industrial production. Sensors of IoT equipment gather personal, sensitive and important data, which is stored in a cloud server. The cloud helps users to save cost and collaborate. However, the privacy of data is also at risk. Public-key encryption with keyword search (PEKS) is convenient for users to use the data without leaking privacy. In this article, we give a scheme of PEKS for a multi-user to realize the multi-keyword search at once and extend it to show a rank based on keywords match. The receiver can finish the search by himself or herself. With private cloud and server cloud, most users’ computing can be outsourced. Moreover, the PEKS can be transferred to a multi-user model in which the private cloud is used to manage receivers and outsource. The store cloud and the private cloud both obtain nothing with the keyword information. Then our IoT devices can easily run these protocols. As we do not use any pairing operations, the scheme is under more general assumptions that means the devices do not need to take on the heavy task of calculating pairing.

scholarly journals Public key encryption with equality test from generic assumptions in the random oracle model

2019 ◽  
Vol 500 ◽  
pp. 15-33 ◽  
Author(s):  
Hyung Tae Lee ◽  
San Ling ◽  
Jae Hong Seo ◽  
Huaxiong Wang
Keyword(s):  
Random Oracle Model ◽  
Random Oracle ◽  
Public Key ◽  
Public Key Encryption ◽  
Equality Test

PKE-ET-HS: Public Key Encryption with Equality Test for Heterogeneous Systems in IoT

2020 ◽  
Vol 113 (1) ◽  
pp. 313-335
Author(s):  
Rashad Elhabob ◽  
Yanan Zhao ◽  
Alzubair Hassan ◽  
Hu Xiong
Keyword(s):  
Heterogeneous Systems ◽  
Public Key ◽  
Public Key Encryption ◽  
Equality Test

scholarly journals CCA2 Attack and Modification of Huanget al.’s Public Key Encryption with Authorized Equality Test

2016 ◽  
Vol 59 (11) ◽  
pp. 1689-1694 ◽  
Author(s):  
Hyung Tae Lee ◽  
San Ling ◽  
Jae Hong Seo ◽  
Huaxiong Wang
Keyword(s):  
Public Key ◽  
Public Key Encryption ◽  
Equality Test

Pairing-Free Identity-Based Encryption with Authorized Equality Test in Online Social Networks

2019 ◽  
Vol 30 (04) ◽  
pp. 647-664
Author(s):  
Libing Wu ◽  
Yubo Zhang ◽  
Kim-Kwang Raymond Choo ◽  
Debiao He
Keyword(s):  
Social Networking ◽  
Online Social Networks ◽  
Keyword Search ◽  
Public Key ◽  
Encryption Scheme ◽  
Public Key Encryption ◽  
Identity Based Encryption ◽  
Identity Based ◽  
Equality Test ◽  
Chosen Ciphertext Attack

Online social networking applications have become more and more popular in the advance of the technological age. Much of our personal information has been disclosed in social networking activities and privacy-preserving still remains a research challenge in social network. Public key encryption scheme with equality test(PKEET), which is an extension of public key encryption with keyword search (PEKS), seems to be a solution. PKEET enables the tester to check whether two given ciphertexts are derived from the same plaintext. Recently, Zhu et al. proposed a pairing-free public key encryption scheme with equality test based on the traditional public key cryptosystem. However, it suffers from certificates management issue. In this paper, we propose a pairing-free identity-based encryption scheme with authorized equality test(PF-IBEAET). The PF-IBEAET scheme also provides fine-grained authorizations. We prove that the scheme is one way secure against chosen identity and chosen ciphertext attack (OW-ID-CCA) and indistinguishable against chosen-identity and chosen-ciphertext attack (IND-ID-CCA) in the random oracle model (ROM). Performance analysis shows that the scheme achieves a better performance than similar schemes.

Group public key encryption with equality test against offline message recovery attack

2020 ◽  
Vol 510 ◽  
pp. 16-32 ◽  
Author(s):  
Yunhao Ling ◽  
Sha Ma ◽  
Qiong Huang ◽  
Ximing Li ◽  
Yunzhi Ling
Keyword(s):  
Public Key ◽  
Public Key Encryption ◽  
Message Recovery ◽  
Equality Test
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