On the Adaptive Security of the Threshold BLS Signature Scheme

Bacho, Renas; Loss, Julian

doi:10.1145/3548606.3560656

Cited by 39 publications

(8 citation statements)

References 22 publications

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“…On the other hand, the study by Bellare et al [49] established the security of the threshold-BLS signature in the generic group model (GGM). Therefore, based on the results of the works by [47], [48], and [49], it can be concluded that the security of the threshold-BLS signature scheme employed in our protocol is well established.…”

Section: A Other Security Aspectsmentioning

confidence: 78%

“…The security of the threshold-BLS signature was first established in the random oracle model (ROM) setting by Boldyreva [47]. Subsequently, the security of the threshold-BLS signature was further strengthened by two independent works, one by Bacho et al [48] and the other by Bellare et al [49]. The work by Bacho et al [48] demonstrated the security of the threshold-BLS signature against adaptive adversaries in the AGM and ROM models.…”

Section: A Other Security Aspectsmentioning

confidence: 99%

“…Subsequently, the security of the threshold-BLS signature was further strengthened by two independent works, one by Bacho et al [48] and the other by Bellare et al [49]. The work by Bacho et al [48] demonstrated the security of the threshold-BLS signature against adaptive adversaries in the AGM and ROM models. On the other hand, the study by Bellare et al [49] established the security of the threshold-BLS signature in the generic group model (GGM).…”

Section: A Other Security Aspectsmentioning

confidence: 99%

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A Distributed and Decentralized Certificateless Framework for Reliable Shared Data Auditing for FOG-CPS Networks

Burra

Maity

2023

IEEE Access

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FOG computing enhances communication efficiency by processing data at the network's edge. In many critical infrastructure (CI) networks, user entities outsource data to the FOG server, but the reliability of the data is a concern. To avoid incorrect decision-making due to corrupt data, a data auditing process is mandatory. Further, a group of user entities in a CI network generate data onto a common file and outsource the file to the FOG server. Auditing such shared group data creates additional complexities. Existing shared group data auditing schemes using public key infrastructure (PKI) or identity-based cryptography (IBC) face challenges such as certificate management or key escrow problems respectively. While, certificateless cryptography (CLC) offers better security and efficiency, but many CLC-based shared group data auditing schemes lack protection against key generation center compromise. The key generation process in many of the existing shared group data auditing schemes is centralized and does not support flexible user entity admission. This paper proposes a distributed and decentralized cryptography approach to enhance the security of key generation for group members. The scheme offers flexible user admission, allowing for full or semi-membership. The proposed scheme provides efficient and secure shared group data auditing against public key replacement, metadata forgery, and integrity attacks, as shown by performance evaluation and security analysis.

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Section: A Other Security Aspectsmentioning

confidence: 78%

Section: A Other Security Aspectsmentioning

confidence: 99%

Section: A Other Security Aspectsmentioning

confidence: 99%

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A Distributed and Decentralized Certificateless Framework for Reliable Shared Data Auditing for FOG-CPS Networks

Burra

Maity

2023

IEEE Access

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“…The BLS signature can be readily converted into threshold versions through Shamir secret sharing, owing to its suitability for signature aggregation [32]. In the proposed scheme, we establish a trustworthy third party within the pledge-challenge model by employing BLS threshold signatures.…”

Section: B Bls Signaturementioning

confidence: 99%

Fast Payments Across Heterogeneous Blockchains for Internet of Things

Lin,

Wang,

et al. 2024

IEEE Access

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Internet of Things data exchange services facilitate the connection and flexible exchange of data among distributed IoT data sources. Traditional IoT data exchange services typically involve direct data uploads to the cloud, allowing service providers to generate significant profits through IoT data analysis. However, this approach exposes data owners to privacy risks while not benefiting them from the service providers' gains. Furthermore, the use of different blockchain architectures by various IoT networks presents challenges for achieving cross-chain interoperability. Although blockchain technology has ensured the security and integrity of IoT data transactions, its efficiency remains a concern. To address these issues, we propose a real-time cross-chain transaction scheme for IoT data exchange in an IoT environment. Our scheme aims to address the real-time security challenges associated with cross-chain data interactions. First, we established a secure and fair settlement scheme by employing a smart contract model based on collateral and challenge mechanisms. In addition, cryptographic tools are utilized to enhance the expressive capabilities of weakly secure service providers, thereby reducing reliance on third-party security assumptions. Finally, through experimentation, we demonstrate the effectiveness of our smart contract model in reducing the time required for on-chain transactions.INDEX TERMS Atomic Cross-Chain Swap, Internet of Things, Fast Payments, Blockchain.

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“…Our definition is adapted from that of Bacho and Loss [BL22] except we only require a standard secrecy notion akin to that of Gennaro et al [GJKR07]. As we consider static security, our simulator is parametrised by the set of corrupted parties B chosen by the adversary.…”

Section: Definition 7 (Distributed Key Generation (Dkg))mentioning

confidence: 99%