Identity‐based encryption resilient to continuous key leakage

Zhou, Yanwei; Yang, Bo; Mu, Yi; Wang, Tao; Wang, Xin

doi:10.1049/iet-ifs.2018.5203

Cited by 5 publications

(2 citation statements)

References 36 publications

(98 reference statements)

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“…In reference [25], a hierarchical attribute-based encryption scheme with continuous leakage-resilience is proposed. In [26], an identity-based secure scheme against continuous leakage is designed in the standard model. Based on the q-ABDHE assumption, they first propose a CLR-IBE scheme with CPA security in the standard model.…”

Section: Continuous Leakage Modelmentioning

confidence: 99%

Fully Secure ID-Based Signature Scheme with Continuous Leakage Resilience

Yu¹,

Ji³

2022

Security and Communication Networks

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The side channel attacks will lead to the destruction of the security of the traditional cryptographic scheme. Leakage-resilient identity-based signature has attracted great attention. Based on the dual system encryption technology, we construct an identity-based signature scheme that can resist continuous private key leakage. In the standard model, the security of the scheme is proved. The key points of our leakage-resilient signature scheme are as follows: (1) The private key can be extended according to the security requirements. In other words, when the leakage is serious, we can select a bigger value n, where n is a parameter related to the leakage rate. (2) An elaborate key update algorithm makes the scheme resist continuous leakage attacks. Furthermore, the updated private key has the same distribution as the previous private key. (3) The proposed scheme is fully secure in the standard model rather than in the random oracle model or in the general group model. In order to achieve this goal, we use dual system encryption technology. Thus, the security of the constructed scheme does not depend on the number of queries of the attacker.

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Section: Continuous Leakage Modelmentioning

confidence: 99%

Fully Secure ID-Based Signature Scheme with Continuous Leakage Resilience

Yu¹,

Ji³

2022

Security and Communication Networks

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“…In another word, the amount about revealed key information for a period is limited, while the amount about revealed key information is unlimited for the whole execution about the system. References [23][24] give the security schemes under this model.…”

Section: Related Workmentioning

confidence: 99%

Continuous Leakage-resilient and Hierarchical Identity-based Online/Offline Encryption

Yu¹,

Yu²,

Shen³

et al. 2022

Journal of Internet Technology

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<p>By dividing encryption as online and offline stages, the online/offline encryption schemes are very suitable to lightweight equipment. For the offline stage, high-performance equipment is used for complex preprocessing calculation, and the online stage the lightweight devices only make some simple calculations. In addition, side channel attacks can disclose some secret information of the cryptosystem, which leads to the destruction of the security of the cryptography schemes. Most of the online/offline identity-based encryption schemes cannot resist side channel attacks. The paper proposes a concrete hierarchical identity-based and online/offline encryption scheme that can resist continuous leakage of secret key. By the dual system encryption technology, we prove that the given scheme is fully secure. Through key updation technology, our proposed scheme resists continual leakage of private key. The relative leakage rate of the private key can reach 1/3. In addition, the presented scheme has the hierarchical function which effectively solves the problem of heavy load in a single key generation center. The given scheme is suitable for applications in distributed environment.</p> <p> </p>

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