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Post-Quantum Secure Identity-Based Encryption from Multivariate Public Key Cryptography

Nibedita Kundu, Kunal Dey, Pantelimon Stănică +2 more

Lecture notes in electrical engineeringJan 1, 20212 citations

Compact Post-quantum Bounded-Collusion Identity-Based Encryption

Shingo Sato, Junji Shikata

Lecture notes in computer scienceOct 2, 20240 citations

Post-Quantum Security Models for Authenticated Encryption

Vladimir Soukharev, David Jao, Srinath Seshadri

Lecture notes in computer scienceJan 1, 201613 citations

Quantum-Resistant Revocable Identity-Based Matchmaking Encryption With Revocation-Optimized Design

Jheng-Jia Huang, Guan Yu Chen

Scholars are currently exploring Identity-Based Matchmaking Encryption (IB-ME), which allows senders and receivers to specify identities for decryption, protecting sensitive data in ciphertexts. Our work advances Revocable Identity-Based Matchmaking Encryption (RIB-ME) by adding revocation of decryption rights from unauthorized users. However, most RIB-ME systems rely on the Diffie-Hellman assumption, making them vulnerable to quantum computing threats. Current security models also fail to fully capture adversaries' evolving capabilities, risking unexpected exploits. To address this, we propose a flexible RIB-ME framework, inspired by Wang et al., using a two-tier revocable hierarchical identity-based encryption (RHIBE) approach integrated with post-quantum cryptography. This creates the first quantum-resistant RIB-ME system. We also introduce a detailed security model defining adversaries' strengths and attack patterns over time, enhancing the system's robustness and reliability across various practical scenarios.Scholars are currently exploring Identity-Based Matchmaking Encryption (IB-ME), which allows senders and receivers to specify identities for decryption, protecting sensitive data in ciphertexts. Our work advances Revocable Identity-Based Matchmaking Encryption (RIB-ME) by adding revocation of decryption rights from unauthorized users. However, most RIB-ME systems rely on the Diffie-Hellman assumption, making them vulnerable to quantum computing threats. Current security models also fail to fully capture adversaries' evolving capabilities, risking unexpected exploits. To address this, we propose a flexible RIB-ME framework, inspired by Wang et al., using a two-tier revocable hierarchical identity-based encryption (RHIBE) approach integrated with post-quantum cryptography. This creates the first quantum-resistant RIB-ME system. We also introduce a detailed security model defining adversaries' strengths and attack patterns over time, enhancing the system's robustness and reliability across various practical scenarios.

IEEE Transactions on ReliabilityJan 1, 20261 citation

Post - Quantum Cryptography and Authentication: Enhancing Security for the Quantum Era

Nguyễn Thị Phượng Hằng, Lưu Hồng Dũng

Jan 1, 20250 citations

An Efficient Identity-Based Encryption With Equality Test in Cloud Computing

Zhichao Yang, Debiao He, Longjiang Qu +1 more

Identity-based encryption with equality test (IBEET) provides a feasible way for cloud server partitioning or searching on ciphertexts in the cloud. In that case, the server can judge if two different ciphertexts encrypt the same plaintexts or not. In response to threats posed by quantum computers, lattice-based IBEET schemes have been proposed to make cloud service post-quantum secure. However, those schemes are inefficient and can hardly meet the needs of resource-constrained devices. In this article, an efficient post-quantum IBEET scheme is introduced, which achieves testability by embedding the hash value of plaintext into testing trapdoor instead of encrypting it directly and doubling the size of ciphertext. We also prove that, with the Learning With Errors (LWE) problem assumption, the new scheme is one-way secure against selective identity and chosen ciphertext attacks (OW-sID-CCA) in quantum secure model. Furthermore, we evaluate the performance of the new construction and demonstrate its efficiency by showing that it only costs about half storage comparing with other lattice-based IBEET schemes. The execution time of encryption and decryption phrases in the new scheme reduce by 50%, while the computational cost in test algorithm keeps the same. Therefore, the new proposed IBEET is much more practical for working in post-quantum cloud computing scenarios.Identity-based encryption with equality test (IBEET) provides a feasible way for cloud server partitioning or searching on ciphertexts in the cloud. In that case, the server can judge if two different ciphertexts encrypt the same plaintexts or not. In response to threats posed by quantum computers, lattice-based IBEET schemes have been proposed to make cloud service post-quantum secure. However, those schemes are inefficient and can hardly meet the needs of resource-constrained devices. In this article, an efficient post-quantum IBEET scheme is introduced, which achieves testability by embedding the hash value of plaintext into testing trapdoor instead of encrypting it directly and doubling the size of ciphertext. We also prove that, with the Learning With Errors (LWE) problem assumption, the new scheme is one-way secure against selective identity and chosen ciphertext attacks (OW-sID-CCA) in quantum secure model. Furthermore, we evaluate the performance of the new construction and demonstrate its efficiency by showing that it only costs about half storage comparing with other lattice-based IBEET schemes. The execution time of encryption and decryption phrases in the new scheme reduce by 50%, while the computational cost in test algorithm keeps the same. Therefore, the new proposed IBEET is much more practical for working in post-quantum cloud computing scenarios.

IEEE Transactions on Cloud ComputingFeb 23, 202317 citations

A practical study of post-quantum enhanced identity-based encryption

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