Secure Decentralized Public Key Infrastructure with Multi-signature in Blockchains

Rakkini, M. J. Jeyasheela; Geetha, K.

doi:10.1007/978-981-15-7345-3_38

Cited by 3 publications

(3 citation statements)

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“…e PKI-based RDIC schemes [11,30,37] require the user to verify the certificate of the other user for authentication each time before initiating a communication. e PKI has a very high computational and communication overhead, and introducing the PKI into an RDIC scheme certainly overloads the users in terms of required computation power.…”

Section: Remote Data Integrity Checking (Rdic) Protocolsmentioning

confidence: 99%

“…us, the need arises for remote data integrity checking (RDIC) mechanism for FOG-CPSs. However, many RDIC schemes proposed in the literature employ ID-based cryptography (IBC) with an inherent key escrow problem [12, 26-29, 33, 34, 40] or depend on public key infrastructure (PKI) for key management, which is expensive [11,30,37]. Certificateless cryptography (CLPKC)-based RDIC schemes overcome the drawbacks of IBC and PKI mechanisms.…”

Section: Remote Data Integrity Checking (Rdic) Protocolsmentioning

confidence: 99%

“…Auditor ⟶ CSP: t, c, ID F . (11) Proof-Gen. Upon receiving the challenge from the auditor, the CSP first retrieves the hash-block corresponding to the given instant t from the public blockchain and extracts the two random values k 1 , k 2 ∈ 0, 1 { } l from the retrieved hashblock using the global function Ω. e CSP computes the set C � (i, v i ) 􏼈 􏼉, where i � π(k 1 , x) and v i � f(k 2 , x) for 1 ≤ x ≤ c. Next, it computes proof of possession for the challenged blocks as follows.…”

Section: Proposed Basic Cls-rdic Protocolmentioning

confidence: 99%

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Certificateless Reliable and Privacy-Preserving Auditing of Group Shared Data for FOG-CPSs

Burra

Maity

2022

Security and Communication Networks

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FOG-enabled cyber-physical systems (FOG-CPSs) open new security challenges as the local edge devices are easier to compromise than a traditional cloud server. Remote data integrity checking (RDIC) plays an important role in safeguarding against data corruption from a storage server. Certificateless cryptography (CLPKC)-based RDIC schemes do not suffer from the drawbacks of the public key infrastructure (PKI)-based RDIC protocols. Most of the CLPKC-based RDIC schemes proposed in the literature deal with personal data. However, in a FOG-CPS, it is also important to audit a data file shared by a group of edge devices. Most of the existing group shared data auditing schemes lack mechanisms to defend against a semi-trusted data auditor applicable for a FOG-CPS scenario. In order to address these issues, in this paper, we propose a novel CLPKC-based group shared data auditing protocol tailored to the specific security requirements of a FOG-CPS. Besides, we perform a detailed cryptanalysis of two existing CLPKC-based privacy-preserving group shared data auditing schemes. The formal security analysis of our proposed protocol establishes metadata and data integrity proof unforgeability and claimed zero-knowledge privacy and reliability properties through rigorous proofs in the random oracle model setting. Performance evaluations establish the efficiency of our proposed protocol.

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Section: Remote Data Integrity Checking (Rdic) Protocolsmentioning

confidence: 99%

Section: Remote Data Integrity Checking (Rdic) Protocolsmentioning

confidence: 99%

Section: Proposed Basic Cls-rdic Protocolmentioning

confidence: 99%

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