Identity-Based Encryption with Filtered Equality Test for Smart City Applications

Yang, Minglei; Wang, Erxiu

doi:10.3390/s19143046

Cited by 19 publications

(4 citation statements)

References 49 publications

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“…Compared to PKEET, the IBEET scheme inherits the advantages of the IBE scheme: each user's public key is the identifier for that user, which greatly simplifies key management and makes system deployment more convenient. Due to the favorable properties of IBEET, it has become a research hotspot, and a large number of related articles have subsequently appeared [18][19][20][21][22][23][24][25][26][27][28]. It is worth mentioning that some researchers have extended PKEET to other ID-based cryptosystems, resulting in attribute-based encryption with equality test (ABEET) [29][30][31][32][33][34] and certificateless encryption with equality test(CLEET) [35][36][37].…”

Section: Identity-based Encryption With Equality Test (Ibeet)mentioning

confidence: 99%

SM9 Identity-Based Encryption with Designated-Position Fuzzy Equality Test

Dong,

Zhao,

Wang

et al. 2024

Electronics

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Public key encryption with equality test (PKEET) is a cryptographic primitive that enables a tester to determine whether two ciphertexts encrypted with same or different public keys have been generated from the same message without decryption. Previous studies extended PKEET to public key encryption with designated-position fuzzy equality test (PKE-DFET), enabling testers to verify whether plaintexts corresponding to two ciphertexts are equal while ignoring specific bits at designated positions. In this work, we have filled the research gap in the identity-based encryption (IBE) cryptosystems for this primitive. Furthermore, although our authorization method is the all-or-nothing (AoN) type, it overcomes the shortcomings present in the majority of AoN-type authorization schemes. In our scheme, equality tests can only be performed between a ciphertext and a given plaintext. Specifically, even if a tester acquires multiple AoN-type authorizations, it cannot conduct unpermitted equality tests between users. This significantly reduces the risk of user privacy leaks when handling sensitive information in certain scenarios, while still retaining the flexible and simple characteristics of AoN-type authorizations. We use the Chinese national cryptography standard SM9-IBE algorithm to provide the concrete construction of our scheme, enhancing the usability and security of our scheme, while making deployment more convenient. Finally, we prove that our scheme achieves F-OW-ID-CCA security when the adversary has the trapdoor of the challenge ciphertext, and achieves IND-ID-CCA security when the adversary does not have the trapdoor of the challenge ciphertext.

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Section: Identity-based Encryption With Equality Test (Ibeet)mentioning

confidence: 99%

SM9 Identity-Based Encryption with Designated-Position Fuzzy Equality Test

Dong,

Zhao,

Wang

et al. 2024

Electronics

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“…These schemes adopt the benefits of identity-based encryption (IBE) cryptosystems, which allow users to generate public and private key pairs using their identity information without the need for digital certificates, therefore addressing the key management problem in public key encryption cryptosystems. This novel approach sparked significant subsequent research on IBEET [17][18][19][20][21][22][23][24][25][26][27][28].…”

Section: Related Workmentioning

confidence: 99%

Certificateless Encryption Supporting Multi-Ciphertext Equality Test with Proxy-Assisted Authorization

Dong,

Zhao,

Wang

et al. 2023

Electronics

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Public key encryption with equality test (PKEET) is a cryptographic primitive that enables a tester to determine, without decryption, whether two ciphertexts encrypted with different public keys generate from the same message. In previous research, public key encryption with equality test (PKEET) was extended to include identity-based encryption with equality test (IBEET), thereby broadening the application of PKEET. Subsequently, certificateless encryption with equality test (CLEET) was introduced to address the key escrow problem in IBEET. However, existing CLEET schemes suffer from inefficiency and potential information leakage when dealing with multiple ciphertexts due to the need for pairwise equality tests. To address this issue, we propose a concept of certificateless encryption supporting multi-ciphertext equality test with proxy-assisted authorization (CLE-MET-PA). CLE-MET-PA incorporates the functionality of the multi-ciphertext equality test into CLEET, enabling a tester to perform a single equality test on multiple ciphertexts to determine whether the underlying plaintexts are equal, without revealing any additional information. This enhances the security of our scheme while significantly reducing the computational overhead compared to multiple pairwise equality tests, making our scheme more efficient. Additionally, our approach integrates proxy-assisted authorization, allowing users to delegate a proxy to grant authorizations for equality tests on their behalf when offline. Importantly, the proxy token used in our scheme does not include any portion of the user’s private key, providing enhanced protection compared to traditional PKEET schemes in which the user token is often part of the user’s private key. We construct a concrete CLE-MET-PA scheme and prove that it achieves CPA security and attains CCA security through an FO transformation.

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“…Investigation of the practical function of the system established its suitability for securing online communications, though with a major drawback that the key should be as long as the plaintext, which increases the difficulty of key distribution and management. In [77], an identity-based encryption and filtered equality test model for smart healthcare information control and management was presented. The model is focused on securing outsourced to the cloud infrastructure.…”

Section: Related Workmentioning

confidence: 99%

Design of an E-Administration Platform and Its Cryptography-Based Security Model

Omohwo¹,

Babatunde²,

Kehinde³

et al. 2023

JCC

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E-administration is performing administrative works via computer and its associated technologies such as the Internet. It is administrative efforts that center on the exchange of information and providing services to people and the business sector at high speed and low cost through computers and networks with the assurance of maintaining information security. It is based on the positive investment in information technology and communication in administrative practices. This paper presents the design of the e-administration platform that adopts the concept of cryptography for identity management. The architectural framework of the platform comprises subcomponents for service and forms identification, business process redesign, service architecture, amalgamation, and deployment. The cryptography model for securing the platform was designed based on the combination of authentication criteria presented in the Rijndael-Advanced Encryption Standard (AES), Latticebased cryptography (LBC), and Secure Hash Algorithm (SHA512). It is required that a record be encrypted prior to its commitment to the database via a double encryption method. The AES algorithm-based encryption's output will form the input to the LBC algorithm to obtain the final output.

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Identity-Based Encryption with Filtered Equality Test for Smart City Applications

Cited by 19 publications

References 49 publications

SM9 Identity-Based Encryption with Designated-Position Fuzzy Equality Test

SM9 Identity-Based Encryption with Designated-Position Fuzzy Equality Test

Certificateless Encryption Supporting Multi-Ciphertext Equality Test with Proxy-Assisted Authorization

Design of an E-Administration Platform and Its Cryptography-Based Security Model

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