Double-authentication-preventing signatures

Poettering, Bertram; Stebila, Douglas

doi:10.1007/s10207-015-0307-8

Cited by 28 publications

(9 citation statements)

References 41 publications

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“…If they are equal, it indicates that the signature is valid. In addition, he will also check if the linkable tag (I) has been used before to prevent double-signing [22].…”

Section: Security Analysismentioning

confidence: 99%

Enhancing Consensus Security and Privacy with Multichain Ring Signatures Based on HotStuff

Gao,

Wang,

2023

Electronics

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The paper introduces a novel consensus algorithm named MRPBFT, which is derived from the HotStuff consensus protocol and improved upon to address security deficiencies in traditional consensus algorithms within the domain of digital asset transactions. MRPBFT aims to enhance security and privacy protection while pursuing higher consensus efficiency. It employs a multi-primary-node approach and a ring signature mechanism to reinforce security and privacy preservation features in the consensus system. This algorithm primarily focuses on two main improvements: Firstly, it proposes the ed25519LRS signature algorithm and discusses its anonymity for transaction participants and the non-forgeability of signature information in the identity verification and message verification processes within the consensus algorithm. Secondly, the paper introduces MPBFT asynchronous view changes and a multi-primary-node mechanism to enhance consensus efficiency, allowing for view switching in the absence of global consensus. With the introduction of the multi-primary-node mechanism, nodes can be flexibly added or removed, supporting parallel processing of multiple proposals and transactions. Finally, through comparative experiments, the paper demonstrates that the improved algorithm performs significantly better in terms of throughput and network latency.

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“…If they are equal, it indicates that the signature is valid. In addition, he will also check if the linkable tag (I) has been used before to prevent double-signing [22].…”

Section: Security Analysismentioning

confidence: 99%

Enhancing Consensus Security and Privacy with Multichain Ring Signatures Based on HotStuff

Gao,

Wang,

2023

Electronics

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“…In [14], the authors propose a novel sampling-based exchange protocol that requires the publication of a single key on the blockchain. The protocol exploits the fact that ECDSA signature scheme [34] is a double authentication preventing signature (DAPS) [35] where if two different messages are signed with the same randomness, then the signing key can be easily calculated from the signatures. The idea is that the sender encrypts each sub-good with the same public key.…”

Section: B Exchange Protocols Without Known Descriptionmentioning

confidence: 99%

Practical Exchange for Unique Digital Goods

Ersoy

Genç

Erkin

et al. 2021

2021 IEEE International Conference on Decentralized Applications and Infrastructures (DAPPS)

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Smart contracts can be used for the fair exchange of digital goods. A smart contract can escrow the exchange where the receiver deposits the payment, and the sender claims it by providing the goods. In the case of misbehavior, the parties provide proof on whether the received goods match the pre-agreed description or not. In general, the description is assumed to be the hash of the goods, and it is publicly known. However, without trusting the description provided by the sender, this assumption is not plausible for the scenarios where the goods are uniquely created for a specific receiver. To overcome the trust issue, samplingbased exchange protocols have been introduced where the parties use a sample of the goods as the description. Yet, the existing sampling-based proposals suffer from high on-and off-chain computational and storage costs.In this paper, we present FairDEx: an efficient sampling-based protocol that is suitable for the exchange of unique goods. Our description protocol allows us to achieve low on-and off-chain costs, which are independent of the size of the goods. The off-chain part of the protocol only utilizes highly efficient algorithms, namely hashing and symmetric key encryption. To illustrate the feasibility of FairDEx, we evaluate a research prototype on the Ethereum test network. Our results show that the cost of running FairDEx is around 0.6M gas for reasonably large sample sets, which is 30% cheaper than the state-of-the-art Ethereum-based proposals.

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“…Digital signatures are usually used by trusted authorities to make unique bindings between a subject and a digital object. Poettering and Stebila [9] proposed a type of signatures called double-authentication-preventing signatures, where a subject/message pair is signed. This is in order to provide selfenforcement for correct signer behavior and provide greater assurance to verifiers that signers behave honestly.…”

Section: Significance Of the Studymentioning

confidence: 99%

Double Authentication Model using Smartphones to Enhance Student on-Campus Network Access

Saleh¹,

Mashhour²

2018

ijacsa

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Computers are widely used by all universities to provide network access to students. Therefore, the securities of these computers play a major role in protecting the network. In light of that, a strong access control is required to ensure that sensitive information will only be accessed through firm authentication mechanism. Smartphones are widely used by students, and can be employed to further enhance student authentication by storing partial access information on the Smartphone. And while students should not leave their computer systems unattended, some do. Therefore, daily network access requires that computer unit to be configured in a way that includes password authentication and an access code stored on a device (the smartphone) which needs to be presented by the user during the authentication process. It is a fact that software and hardware may fail to fully secure and protect systems, but user's negligence to safeguard their systems by logging out of the computer unit before moving away is far more serious security issue. The system being developed in this research will lock the computer unit once the student moves away from that computer unit and loosing communication with the smartphone.

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Double-authentication-preventing signatures

Cited by 28 publications

References 41 publications

Enhancing Consensus Security and Privacy with Multichain Ring Signatures Based on HotStuff

Enhancing Consensus Security and Privacy with Multichain Ring Signatures Based on HotStuff

Practical Exchange for Unique Digital Goods

Double Authentication Model using Smartphones to Enhance Student on-Campus Network Access

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