CCA-Secure Leakage-Resilient Identity-Based Key-Encapsulation from Simple (Not $$\mathtt {q}$$ -type) Assumptions

Tomita, Toi; Ogata, Wakaha; Kurosawa, Kaoru

doi:10.1007/978-3-030-26834-3_1

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Lr-cca2-secure Identity-based Encryption With Optimal Leakage Rate1

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2020

2024

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Cited by 3 publications

(1 citation statement)

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“…Here, we briefly explain how to extend our scheme to be an adaptive secure variant. We use the same techniques of [9], [19], [20].…”

Section: Lr-cca2-secure Identity-based Encryption With Optimal Leakage Ratementioning

confidence: 99%

Boosting CPA to CCA2 for Leakage-Resilient Attribute-Based Encryption by Using New QA-NIZK

Tomita

Ogata

Kurosawa

2022

IEICE Trans. Fundamentals

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In this paper, we construct the first efficient leakageresilient CCA2 (LR-CCA2)-secure attribute-based encryption (ABE) schemes. We also construct the first efficient LR-CCA2-secure identitybased encryption (IBE) scheme with optimal leakage rate.To obtain our results, we develop a new quasi-adaptive non-interactive zero-knowledge (QA-NIZK) argument for the ciphertext consistency of the LR-CPA-secure schemes.Our ABE schemes are obtained by boosting the LR-CPA-security of some existing schemes to the LR-CCA2-security by using our QA-NIZK arguments. The schemes are almost as efficient as the underlying LR-CPAsecure schemes.

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“…Here, we briefly explain how to extend our scheme to be an adaptive secure variant. We use the same techniques of [9], [19], [20].…”

Section: Lr-cca2-secure Identity-based Encryption With Optimal Leakage Ratementioning

confidence: 99%

Boosting CPA to CCA2 for Leakage-Resilient Attribute-Based Encryption by Using New QA-NIZK

Tomita

Ogata

Kurosawa

2022

IEICE Trans. Fundamentals

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A New Construction of Leakage-Resilient Identity-Based Encryption Scheme

Qiao,

Xu,

et al. 2024

Lecture Notes in Computer Science

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CCA-Secure Leakage-Resilient Identity-Based Encryption without q-Type Assumptions

Tomita

Ogata

Kurosawa

et al. 2020

IEICE Trans. Fundamentals

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CCA-Secure Leakage-Resilient Identity-Based Key-Encapsulation from Simple (Not $$\mathtt {q}$$ -type) Assumptions

Cited by 3 publications

References 31 publications

Boosting CPA to CCA2 for Leakage-Resilient Attribute-Based Encryption by Using New QA-NIZK

Boosting CPA to CCA2 for Leakage-Resilient Attribute-Based Encryption by Using New QA-NIZK

A New Construction of Leakage-Resilient Identity-Based Encryption Scheme

CCA-Secure Leakage-Resilient Identity-Based Encryption without q-Type Assumptions

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