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attribute based encryption with Privacy Protection and Accountability for CloudIoT

IEEE TRANSACTIONS ON CLOUD COMPUTING 2022年第2期10卷 762-773页

作者： Li, Jiguo Zhang, Yichen Ning, Jianting Huang, Xinyi Poh, Geong Sen Wang, Debang Fujian Normal Univ Coll Math & Informat Fuzhou 350117 Fujian Peoples R China Fujian Prov Key Lab Network Secur & Cryptol Fuzho Fuzhou 350117 Fujian Peoples R China State Key Lab Cryptol POB 5159 Beijing 100878 Peoples R China Natl Univ Singapore Dept Comp Sci Singapore 119077 Singapore

The pervasive, ubiquitous, and heterogeneous properties of IoT make securing IoT systems a very challenging task. More so when access and storage are performed through a cloud-based IoT system. IoT data stored on cloud should be encrypted to ensure data privacy. It is also crucial to allow only authorized entities to access and decrypt the encrypted data. In this article, we propose a ciphertext-policy attribute-based encryption (CP-ABE) scheme that enables fine-grained access control of encrypted IoT data on cloud. CP-ABE is regarded as a highly promising approach to provide flexible and fine-grained access control, which is quite suited to secure cloud based IoT systems. We first present an access control system model of CloudIoT platform based on ABE. based on the presented system model, we construct a ciphertext-policy hiding CP-ABE scheme, which guarantees the privacy of the users. We further construct a white-box traceable CP-ABE scheme with accountability in order to address the user key abuse and authorization center key abuse. Experiment illustrates the proposed systems are efficient.

关键词： CloudIoT access control over data attribute based encryption hidden access structure accountability

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A secure multi-authority attribute based encryption approach for robust smart grids

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2024年第7期36卷 e7972-e7972页

作者： Saidi, Ahmed Amira, Abdelouahab Nouali, Omar Res Ctr Sci & Tech Informat CERIST DSI Ben Aknoun Algeria Res Ctr Sci & Tech Informat CERIST DSI Ben Aknoun 16000 Algiers Algeria

This paper presents EMBASS, an Enhanced Multi-Authority attribute-based encryption System for Smart Grids. EMBASS supports outsourced decryption to devices with limited resources. It also uses a proxy to add fake values to the access policy in order to protect against malicious users. Additionally, a proxy user assistant is utilized to create an intermediate key for each fog node in the decryption process, and a chain decryption technique is used to further delegate the decryption process. The security properties and performance of the proposed system are analyzed, discussed and compared to state of the art approaches. EMBASS has been discussed for usage with smart grids, and experimentation shows that it yields promising results compared to state-of-the-art approaches.

关键词： attribute based encryption hidden policy multi-authority outsourcing security smart grids

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A Delegatable attribute based encryption Scheme for a Collaborative E-Health Cloud

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IEEE TRANSACTIONS ON SERVICES COMPUTING 2023年第2期16卷 787-801页

作者： Pussewalage, Harsha Sandaruwan Gardiyawasam Oleshchuk, Vladimir Univ Agder UiA Dept Informat & Commun Technol N-4898 Grimstad Norway

With the popularization and growing utilization of electronic health records (EHRs) coupled with the advancements in cloud computing, healthcare providers are interested in storing EHRs in third-party, semi-trusted cloud platforms. Given the collaborative nature of modern e-health environments, integrating access delegation is of paramount importance to strengthen the flexibility of the sharing of health information. However, access delegation has to be enforced in a controlled manner so that it will not jeopardize the security of the system. For such applications, attribute based encryption (ABE) mechanisms are quite useful given the fact that ABE facilitates an efficient way of enforcing secure, fine-grained access control over encrypted data. However, incorporating delegatability with ABE mechanisms is tricky, and the existing schemes lack the control over the process of delegation of encrypted data. As a solution, we propose a novel ABE based access control scheme which can enforce multi-level, controlled access delegation and demonstrated how it could be deployed in an e-health environment to securely share outsourced EHRs of patients. Furthermore, we have shown that the proposed scheme is secure against chosen plaintext attacks as well as attacks mounted via attribute collusion.

关键词： Cryptography Hospitals Cloud computing Medical services encryption Collaboration Data privacy Access control attribute based encryption controlled delegation security privacy

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A Post Quantum Key Policy attribute based encryption Scheme from Code based Cryptographic Assumptions 4th

A Post Quantum Key Policy Attribute Based Encryption Scheme ...

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4th International Conference on Advanced Network Technologies and Intelligent Computing-ANTIC-Annual

作者： Raju, Pratheeksha Chithralekha, T. Pondicherry Univ Dept Comp Sci Kalapet India

ISBN: (纸本)9783031837821;9783031837838

The security underpinnings of conventional cryptographic schemes are compromised by quantum computing which prompted advancements in public key cryptography for postquantum primitives and protocols that are immune to quantum attacks. Most existing research on post quantum attribute based encryption techniques is predicated on lattice based cryptographic assumptions. Despite being thought to provide a robust defense against quantum attacks, code based cryptography has yet to be sufficiently explored in the context of ABE. This paper presents a robust attribute based encryption scheme designed to ensure post quantum security using code based cryptographic assumptions. We integrate ABE into the McEliece cryptosystem and propose a post quantum key policy ABE framework that combines the security advantages of code based cryptosystems with the fine grained access control of ABE. The proposed technique enables effortless integration of attributes into the public key without inflating the key size.

关键词： attribute based encryption post quantum security code based encryption Key policy ABE

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A survey of lattice based expressive attribute based encryption

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COMPUTER SCIENCE REVIEW 2022年第0期43卷 100438-100438页

作者： Fu, Xingbing Ding, Yong Li, Haifeng Ning, Jianting Wu, Ting Li, Fagen Hangzhou Dianzi Univ Sch Cyberspace Hangzhou 310018 Peoples R China Yibin Univ Fac Sci Yibin 644000 Peoples R China Guangxi Key Lab Cryptog & Informat Secur Gulin Guangxi Peoples R China Guangdong Prov Key Lab Informat Secur Technol Guangzhou Peoples R China Dalian Univ Technol Sch Software Dalian 116024 Peoples R China Fujian Normal Univ Coll Comp & Cyber Secur Fuzhou 350117 Peoples R China Univ Elect Sci & Technol China Sch Comp Sci & Engn Beijing Peoples R China

attribute based encryption (ABE) can be employed to enforce fine grained access control over encrypted data. Due to expressiveness, ABE schemes are currently employed in cloud computing and storage systems. The classical ABE schemes based on bilinear pairing are vulnerable to quantum cryptanalysis, whereas ABE schemes from lattices can resist quantum attacks. In this work, we comprehensively survey various kinds of attribute based encryption schemes in the lattice setting in terms of expressiveness, complexity assumptions, efficiency, security and so on. We also discuss attribute based encryption schemes from lattices deserving further research to specify future directions for cryptographers. (c) 2021 Elsevier Inc. All rights reserved.

关键词： attribute based encryption Cloud storage Expressiveness Fine grained access control Lattice based cryptography

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A systematic literature review of attribute based encryption in health services

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JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES 2022年第9期34卷 6743-6774页

作者： Imam, Raza Kumar, Kaushal Raza, Syed Mehran Sadaf, Rumi Anwer, Faisal Fatima, Noor Nadeem, Mohammad Abbas, Mohamed Rahman, Obaidur Aligarh Muslim Univ Dept Comp Sci Aligarh 202002 Uttar Pradesh India King Khalid Univ Coll Engn Elect Engn Dept Abha 61413 Asir Saudi Arabia Jamia Millia Islamia Dept Elect Engn New Delhi India Delta Univ Sci & Technol Coll Engn Comp & Commun Dept Gamasa 35712 Egypt

The widespread adoption of cloud technology in the healthcare industry has achieved effective outcomes in sharing health records and sensitive data. In recent years, many organizations have prioritized EHealth as their primary goal for advancement in health services. As a result, attribute based encryption (ABE) has emerged as a reliable model for health information exchange across cloud settings. Eventually, it leads to provide acceptable solutions for challenging scenarios like fine-grained access control. Despite ABE significance and its breadth of applications, no systematic and comprehensive survey exists in the literature that covers every variation of ABE in healthcare, highlighting its past and present status. This paper presents a systematic and comprehensive study of ABE works concerning E-Health as the authors rigorously investigate healthcare-focused ABE frameworks and examine them based on various descriptive criteria, along with categorizing them systematically in 10 distinct domains and subdomains, ultimately offering observations and potential recommendations. The descriptive research design, significant findings along with the suggested future works will help future research in ABE to secure the existing E-Health data sharing more effectively. The present study will also facilitate researchers and practitioners to comprehend the past trends and current state of ABE architectures in secure health data-sharing scenarios, as well as the prospect of ABE deployment in most recent technological evolutions. (c) 2022 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY license (http://***/licenses/by/4.0/).

关键词： attribute based encryption Healthcare E-Health Access control Systematic review

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Dually Computable Cryptographic Accumulators and Their Application to attribute based encryption 22nd

Dually Computable Cryptographic Accumulators and Their Appli...

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22nd International Conference on Cryptology and Network Security

作者： Barthoulot, Anais Blazy, Olivier Canard, Sebastien Orange Innovat Caen France Univ Limoges XLim Limoges France Ecole Polytech Palaiseau France Telecom Paris Palaiseau France

ISBN: (纸本)9789819975624;9789819975631

In 1993, Benaloh and De Mare introduced cryptographic accumulator, a primitive that allows the representation of a set of values by a short object (the accumulator) and offers the possibility to prove that some input values are in the accumulator. For this purpose, so-called asymmetric accumulators require the creation of an additional cryptographic object, called a witness. Through the years, several instantiations of accumulators were proposed either based on number theoretic assumptions, hash functions, bilinear pairings or more recently lattices. In this work, we present the first instantiation of an asymmetric cryptographic accumulator that allows private computation of the accumulator but public witness creation. This is obtained thanks to our unique combination of the pairing based accumulator of Nguyen with dual pairing vector spaces. We moreover introduce the new concept of dually computable cryptographic accumulators, in which we offer two ways to compute the representation of a set: either privately (using a dedicated secret key) or publicly (using only the scheme's public key), while there is a unique witness creation for both cases. All our constructions of accumulators have constant size accumulated value and witness, and satisfy the accumulator security property of collision resistance, meaning that it is not possible to forge a witness for an element that is not in the accumulated set. As a second contribution, we show how our new concept of dually computable cryptographic accumulator can be used to build a Ciphertext Policy attribute based encryption (CP-ABE). Our resulting scheme permits policies expressed as disjunctions of conjunctions (without "NO" gates), and is adaptively secure in the standard model. This is the first CP-ABE scheme having both constant-size user secret keys and ciphertexts (i.e. independent of the number of attributes in the scheme, or the policy size). For the first time, we provide a way to use cryptographic accumulators fo

关键词： Cryptographic accumulators attribute based encryption Pairing Dual pairing vector spaces

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Multi-input attribute based encryption and Predicate encryption 42nd

Multi-input Attribute Based Encryption and Predicate Encrypt...

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42nd Annual International Cryptology Conference (CRYPTO)

作者： Agrawal, Shweta Yadav, Anshu Yamada, Shota IIT Madras Chennai Tamil Nadu India Natl Inst Adv Ind Sci & Technol Tokyo Japan

ISBN: (纸本)9783031158018;9783031158025

Motivated by several new and natural applications, we initiate the study of multi-input predicate encryption (miPE) and further develop multi-input attribute based encryption (miABE). Our contributions are: 1. Formalizing Security: We provide definitions for miABE and miPE in the symmetric key setting and formalize security in the standard indistinguishability (IND) paradigm, against unbounded collusions. 2. Two-input ABE for NC1 from LWE and Pairings: We provide the first constructions for two-input key-policy ABE for NC(1 )from LWE and pairings. Our construction leverages a surprising connection between techniques recently developed by Agrawal and Yamada (Eurocrypt, 2020) in the context of succinct single-input ciphertext-policy ABE, to the seemingly unrelated problem of two-input key-policy ABE. Similarly to Agrawal-Yamada, our construction is proven secure in the bilinear generic group model. By leveraging inner product functional encryption and using (a variant of) the KOALA knowledge assumption, we obtain a construction in the standard model analogously to Agrawal, Wichs and Yamada (TCC, 2020). 3. Heuristic two-input ABE for P from Lattices: We show that techniques developed for succinct single-input ciphertext-policy ABE by Brakerski and Vaikuntanathan (ITCS 2022) can also be seen from the lens of miABE and obtain the first two-input key-policy ABE from lattices for P. 4. Heuristic three-input ABE and PE for NC1 from Pairings and Lattices: We obtain the first three-input ABE for NC1 by harnessing the powers of both the Agrawal-Yamada and the Brakerski-Vaikuntanathan constructions. 5. Multi-input ABE to multi-input PE via Lockable Obfuscation: We provide a generic compiler that lifts multi-input ABE to multi-input PE by relying on the hiding properties of Lockable Obfuscation (LO) by Wichs-Zirdelis and Goyal-Koppula-Waters (FOGS 2018), which can be based on LWE. Our compiler generalises such a compiler for single-input setting to the much more challenging sett

关键词： Multi-input attribute based encryption Predicate encryption

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Energy efficient trust aware secure routing algorithm with attribute based encryption for wireless sensor networks

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Scientific Reports 2025年第1期15卷 1-18页

作者： Selvi, M. Santhosh Kumar, S.V.N. Thangaramya, K. Abdul Gaffar, H. School of Computer Science and Engineering Vellore Institute of Technology Vellore India School of Computer Science Engineering and Information Systems Vellore Institute of Technology Vellore India

attribute-based encryption (ABE) is one of the public-key cryptographic techniques which enforces a new method of security through effective control of access on the data which is stored or communicated in encrypted form using a variety of user defined access restrictions. ABE is implemented in a fully-fledged computer system, such as smartphones or embedded devices and it can be also used to enhance the security of network communication. In attribute-based encryption, the encryption key will be associated with a set of attributes and these attributes are useful in the decryption process as well. Encrypting the data for numerous receivers can also be done with ABE, in such a way that only those with the right permissions can decrypt it later. The ABE provides a high level of security due to the wide range of key based qualities that can be defined, and it is also flexible enough to be used in a variety of communication and storage situations. In Wireless Sensor Networks (WSNs), the information is transmitted through wireless links from the sensors to a central location called the sink node. The nodes present in WSN are required to carry out the task of monitoring the environments, gather the necessary data through sensing, encrypt them and send them to the sink node. Therefore, security is a major concern for wireless communication since data is transmitted via an open wireless channel that can be accessed by malicious intruders. In order to handle the security problem, we propose a new attribute-based encryption and Trust based Secure Routing Algorithm (ABE-TBSRA) strategy by combining bilinear pairing and Diffie Hellman encryption scheme with RSA algorithm to encrypt and secure the data at the sender-side itself. In addition, we propose a new trust-based security model that uses three types of trusts namely direct, indirect, and historical trust values for improving the security. The major advantages of this proposed encryption and trust based secure routing algor

关键词： attribute based encryption Diffie–Hellman with RSA and clustering method Security Trust-based secure routing protocol Wireless sensor network

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An Efficient Post-Quantum attribute-based encryption Scheme based on Rank Metric Codes for Cloud Computing

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IEEE ACCESS 2023年 11卷 99990-100000页

作者： Yousefipoor, Vahid Eghlidos, Taraneh Sharif Univ Technol Dept Elect Engn Tehran *** Iran Sharif Univ Technol Elect Res Inst Tehran *** Iran

attribute-based encryption is a valuable technique for ensuring data privacy and confidentiality in the realm of cloud computing. Using this cryptographic primitive, the data owner can securely store and share data within the cloud environment. On the other hand, in recent years, extensive advances have been made in quantum processors, which have raised hopes of solving certain mathematical problems includes factoring integers and computing discrete logarithms of large numbers. The advent of quantum computers has posed a significant security threat to existing cryptographic protocols. The existing post-quantum attribute-based encryption schemes have not satisfied the essential features such as verifiability, user privacy and user revocability, simultaneously. In this paper, we present the first secure, practical and post-quantum attribute-based encryption scheme based on rank metric codes. Our scheme enjoys all mentioned features due to utilization of low rank parity check codes. The proposed scheme provides security against chosen plaintext attacks in the standard model, as well as resistance against reaction attacks as a kind of chosen ciphertext attacks. Moreover, at the 256-bit security level, the key size is about 16.5 KB, with an execution time of around 31.2 ms on a desktop. Our implementation results confirm that the proposed scheme is more efficient than the existing post-quantum and classical schemes.

关键词： attribute based encryption completeness of the search results rank metric codes user privacy user revocation

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