Multi-authority ciphertext-policy attribute-based encryption with accountability

Jin, Li; Huang, Qiong; Chen, Xiaofeng; Chow, Sherman S. M.; Wong, Duncan S.; Xie, Dongqing

doi:10.1145/1966913.1966964

Cited by 136 publications

(107 citation statements)

References 9 publications

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“…Besides the actual fact that we are able to specific haphazardly general encoding policy, this system additionally tolerates the compromise attack towards attributes authorities, that isn't lined in several existing works. Recently, there additionally appeared traceable multi-authority ABE [13] and [14], that square measure on the other direction of ours. Those schemes introduce responsibility specified malicious users' keys are often derived.…”

Section: IImentioning

confidence: 81%

Achieving Anonymity with Fully Anonymous Attribute-Based Encryption and Controlling Access Privilege in Cloud

Patil¹

2017

IJRASET

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Cloud computing could be a revolutionary computing paradigm, that allows versatile, on-demand, and inexpensive usage of computing resources, however the info is outsourced to some cloud servers, and varied privacy considerations emerge from it. Various schemes Supported the attribute-based coding have been projected to secure the cloud storage. However, most work focuses on the info contents privacy and therefore the access management, while less attention is paid to the privilege management and therefore the identity privacy. During this paper, a semi anonymous privilege management theme AnonyControl is proposed to handle not solely the data privacy, however conjointly the user identity privacy in existing access control schemes. Anony Control decentralizes the central authority to limit the identity run and therefore achieves semi anonymity. Besides, it conjointly generalizes the file access management to the privilege control, by that privileges of all operations on the cloud knowledge can be managed in an exceedingly fine-grained manner. Afterwards, the Anony Control-F is presented, that totally prevents the identity leakage and succeed the complete namelessness. The security analysis shows that each Anony Control and Anony Control-F square measure secure under the decisional linear Diffie-Hellman assumption, and new performance analysis exhibits the practicableness of new schemes.

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Section: IImentioning

confidence: 81%

Achieving Anonymity with Fully Anonymous Attribute-Based Encryption and Controlling Access Privilege in Cloud

Patil¹

2017

IJRASET

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“…The system is not Security and Communication Networks 3 practical due to infeasible large sizes of public key and ciphertext. Li et al [31] proposed a multiauthority CP-ABE scheme with accountability, which allows tracing the identity of a misbehaving user who leaked the decryption key to others. The system supported AND-gates policy.…”

Section: Related Workmentioning

confidence: 99%

Shorter Decentralized Attribute-Based Encryption via Extended Dual System Groups

Jie

Chen

Ge³

et al. 2017

Security and Communication Networks

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Decentralized attribute-based encryption (ABE) is a special form of multiauthority ABE systems, in which no central authority and global coordination are required other than creating the common reference parameters. In this paper, we propose a new decentralized ABE in prime-order groups by using extended dual system groups. We formulate some assumptions used to prove the security of our scheme. Our proposed scheme is fully secure under the standard -Lin assumption in random oracle model and can support any monotone access structures. Compared with existing fully secure decentralized ABE systems, our construction has shorter ciphertexts and secret keys. Moreover, fast decryption is achieved in our system, in which ciphertexts can be decrypted with a constant number of pairings.

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Section: Related Workmentioning

confidence: 99%

“…Then, the problem of building a secure CP-ABE supporting traceability has recently been studied in [8,12,14,13]. The ciphertext access policies in [8,12] only support a single AND gate with wild-card. The traceable CP-ABE proposed in [14] is as fully secure, highly expressive and efficient as a conventional CP-ABE such as the one in [11], but it only supports tracing 'well-formed' illegally constructed private keys.…”

Section: Related Workmentioning

confidence: 99%

“…The main purpose of traitor tracing in ABE system is to guarantee that any user who illegally shared his/her private key can be traced. Many works have explored traceability in ABE schemes [8,12,14,13]. Most of them focused on tracing new keys generated in collusive way, but few can prevent one user generating new workable keys in private.…”

Section: Application: Traceable Cp-abementioning

confidence: 99%

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Ciphertext-Policy Attribute-Based Encryption with Key-Delegation Abuse Resistance

Jiang

Susilo

et al. 2016

Information Security and Privacy

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Attribute-based encryption (ABE) is a promising cryptographic primitive that allows one-to-many encryption. In such a system, users' private keys are linked to their access rights. We note that if a user can generate a new private key for a portion of his/her access right, this could potentially lead to some undesirable situations, which violate the access control policy. Interestingly, to date, there is no work that looks into this matter in detail nor addresses it. We point out that this is a "property" that exists in ABE systems, which we refer to "key-delegation abuse". ABE systems that suffer from key-delegation abuse will hinder the adoption of these systems in practice. In this work, for the first time in the literature, we address the "key-delegation abuse" problem in Ciphertext-policy Attribute-based Encryption (CP-ABE) systems. We introduce a new mechanism to enhance CP-ABE schemes that provide protections against this key-delegation abuse issue. We formalize the security requirements for such a property, and subsequently construct a CP-ABE scheme that satisfies the new security requirements. We also present an application of our scheme to a traceable CP-ABE, where the "traitors", i.e. the users who have leaked their keys, can be traced. address the "key-delegation abuse" problem in Ciphertext-policy Attribute-based Encryption (CP-ABE) systems. We introduce a new mechanism to enhance CPABE schemes that provide protections against this key-delegation abuse issue. We formalize the security requirements for such a property, and subsequently construct a CP-ABE scheme that satisfies the new security requirements.We also present an application of our scheme to a traceable CP-ABE, where the "traitors", i.e. the users who have leaked their keys, can be traced. Abstract. Attribute-based encryption (ABE) is a promising cryptographic primitive that allows one-to-many encryption. In such a system, users' private keys are linked to their access rights. We note that if a user can generate a new private key for a portion of his/her access right, this could potentially lead to some undesirable situations, which violate the access control policy. Interestingly, to date, there is no work that looks into this matter in detail nor addresses it. We point out that this is a "property" that exists in ABE systems, which we refer to "key-delegation abuse". ABE systems that suffer from key-delegation abuse will hinder the adoption of these systems in practice. In this work, for the first time in the literature, we address the "key-delegation abuse" problem in Ciphertext-policy Attribute-based Encryption (CP-ABE) systems. We introduce a new mechanism to enhance CP-ABE schemes that provide protections against this key-delegation abuse issue. We formalize the security requirements for such a property, and subsequently construct a CP-ABE scheme that satisfies the new security requirements. We also present an application of our scheme to a traceable CP-ABE, where the "traitors", i.e. the users who have leaked their keys, can...

show abstract

Multi-authority ciphertext-policy attribute-based encryption with accountability

Cited by 136 publications

References 9 publications

Achieving Anonymity with Fully Anonymous Attribute-Based Encryption and Controlling Access Privilege in Cloud

Achieving Anonymity with Fully Anonymous Attribute-Based Encryption and Controlling Access Privilege in Cloud

Shorter Decentralized Attribute-Based Encryption via Extended Dual System Groups

Ciphertext-Policy Attribute-Based Encryption with Key-Delegation Abuse Resistance

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