Anonymous Hierarchical Identity-Based Encryption with Constant Size Ciphertexts

Seo, Jae Hong; Kobayashi, Takuya; Ohkubo, Miyako; Suzuki, Koutarou

doi:10.1007/978-3-642-00468-1_13

Cited by 65 publications

(40 citation statements)

References 20 publications

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“…Thus, our HVE scheme provides a new anonymous IBE scheme that is fully secure under standard assumptions such as the DLIN and DBDH assumptions. Prior to our result, several works [9,20,12,42,16,2,17] (including all previous HVE and IPE schemes) have been proposed, but until now there were few anonymous IBE schemes [20,30,35] that achieve full security without using random oracles. Our new scheme is another example, but is fully secure under the standard assumptions.…”

Section: Fully Secure Anonymous Ibe Schemementioning

confidence: 98%

Fully secure hidden vector encryption under standard assumptions

Park

Lee

Susilo

et al. 2013

Information Sciences

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Fully secure hidden vector encryption under standard assumptions AbstractHidden Vector Encryption (HVE) is a special type of predicate encryption that can support conjunctive equality and range searches on encrypted data. All previous HVE schemes were proven to be either selectively secure or weakly attribute-hiding. In this paper, we first construct a new HVE scheme that is fully secure under standard assumptions. Our HVE scheme, which is based on bilinear maps (pairings), provides efficiency advantages in that it requires O(1)-sized private keys and O(1) pairing computations for decryption, regardless of both the number of conjunctives and the dimension of vectors. To achieve our goal, we develop a novel technique to realize a tag-based dual system encryption in prime-order groups and show how to hide vector components and compress tag values into one.

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Section: Fully Secure Anonymous Ibe Schemementioning

confidence: 98%

Fully secure hidden vector encryption under standard assumptions

Park

Lee

Susilo

et al. 2013

Information Sciences

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“…Hierarchical Identity Based Encryption (HIBE) [11,24,10] is a form of Identity Based Encryption (IBE) for hierarchical structures. IBE allows a sender to encrypt messages based on a receiver's identity, such as an e-mail address, before the receiver gets a secret decryption key from a Key Generation Center (KGC).…”

Section: Introductionmentioning

confidence: 99%

Privacy-preserving audit for broker-based health information exchange

Chun

Jia

et al. 2014

Proceedings of the 4th ACM Conference on Data and Application Security and Privacy

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Developments in health information technology have encouraged the establishment of distributed systems known as Health Information Exchanges (HIEs) to enable the sharing of patient records between institutions. In many cases, the parties running these exchanges wish to limit the amount of information they are responsible for holding because of sensitivities about patient information. Hence, there is an interest in broker-based HIEs that keep limited information in the exchange repositories. However, it is essential to audit these exchanges carefully due to risks of inappropriate data sharing. In this paper, we consider some of the requirements and present a design for auditing broker-based HIEs in a way that controls the information available in audit logs and regulates their release for investigations. Our approach is based on formal rules for audit and the use of Hierarchical Identity-Based Encryption (HIBE) to support staged release of data needed in audits and a balance between automated and manual reviews. We test our methodology via an extension of a standard for auditing HIEs called the Audit Trail and Node Authentication Profile (ATNA) protocol.

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“…In order to solve this problem, the notion of Hierarchical Identity-Based Encryption (HIBE) was proposed [30] and then many HIBE schemes were proposed [31,32]. What is more, many anonymous HIBE schemes were proposed [33][34][35][36] where the ciphertext does not leak the identity of the recipient. However, their sizes of private keys and ciphertexts increase with the depth of identity hierarchy.…”

Section: Related Workmentioning

confidence: 99%

A Secure and Privacy-Aware Smart Health System with Secret Key Leakage Resilience

Zhang

Lang

Zheng

et al. 2018

Security and Communication Networks

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With the development of the smart health (s-health), data security and patient privacy are becoming more and more important. However, some traditional cryptographic schemes can not guarantee data security and patient privacy under various forms of leakage attacks. To prevent the adversary from capturing the part of private keys by leakage attacks, we propose a secure leakageresilient s-health system which realizes privacy protection and the safe transmission of medical information in the case of leakage attacks. The key technique is a promising public key cryptographic primitive called leakage-resilient anonymous Hierarchical Identity-Based Encryption. Our construction is proved to be secure against chosen plaintext attacks in the standard model under the Diffie-Hellman exponent assumption and decisional linear assumption. We also blind the public parameters and ciphertexts by using double exponent technique to achieve the recipient anonymity. Finally, the performance analysis shows the practicability of our scheme, and the leakage rate of the private key approximates to 1/6.

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Anonymous Hierarchical Identity-Based Encryption with Constant Size Ciphertexts

Cited by 65 publications

References 20 publications

Fully secure hidden vector encryption under standard assumptions

Fully secure hidden vector encryption under standard assumptions

Privacy-preserving audit for broker-based health information exchange

A Secure and Privacy-Aware Smart Health System with Secret Key Leakage Resilience

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