An Abuse-Free Fair Contract-Signing Protocol Based on the RSA Signature

Wang, Guilin

doi:10.1109/tifs.2009.2035972

Cited by 37 publications

(3 citation statements)

References 45 publications

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“…Some authors [19,[21][22][23][24][25][26][27][28][29][30][31] used definitions that fit the definition we have called hard-timeliness. While other authors [8,9,13,15,[32][33][34][35][36][37][38][39][40][41][42][43][44][45] used definitions that fit the definition we have called soft-timeliness. Some introduced nuance: predetermined time [34,37], agreed time [35,36], bounded time [39], or that the protocol defines a deadline [45].…”

Section: Timelinessmentioning

confidence: 99%

“…While other authors [8,9,13,15,[32][33][34][35][36][37][38][39][40][41][42][43][44][45] used definitions that fit the definition we have called soft-timeliness. Some introduced nuance: predetermined time [34,37], agreed time [35,36], bounded time [39], or that the protocol defines a deadline [45]. Finally, some authors [46][47][48] presented both types of definition.…”

Section: Timelinessmentioning

confidence: 99%

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A Hard-Timeliness Blockchain-Based Contract Signing Protocol

Ferrer-Gomila,

Hinarejos

2023

Computers

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In this article, we present the first proposal for contract signing based on blockchain that meets the requirements of fairness, hard-timeliness, and bc-optimism. The proposal, thanks to the use of blockchain, does not require the use of trusted third parties (TTPs), thus avoiding a point of failure and the problem of signatories having to agree on a TTP that is trusted by both. The presented protocol is fair because it is designed such that no honest signatory can be placed at a disadvantage. It meets the hard-timeliness requirement because both signatories can end the execution of the protocol at any time they wish. Finally, the proposal is bc-optimistic because blockchain functions are only executed in case of exception (and not in each execution of the protocol), with consequent savings when working with public blockchains. No previous proposal simultaneously met these three requirements. In addition to the above, this article clarifies the concept of timeliness, which previously has been defined in a confusing way (starting with the authors who used the term for the first time). We conducted a security review that allowed us to verify that our proposal meets the desired requirements. Furthermore, we provide the specifications of a smart contract designed for the Ethereum blockchain family and verified the economic feasibility of the proposal, ensuring it can be aligned with the financial requirements of different scenarios.

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Section: Timelinessmentioning

confidence: 99%

Section: Timelinessmentioning

confidence: 99%

A Hard-Timeliness Blockchain-Based Contract Signing Protocol

Ferrer-Gomila,

Hinarejos

2023

Computers

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“…Furthermore, the RC4 stream cipher proposed in [27] can also provide a good confidentiality protection in data encryption. In addition, the asymmetric-key cryptographic algorithm, such as the Rivest-Shamir-Adleman (RSA), which is a high-quality public key cryptographic algorithm, is suitable for digital signature, key exchange, etc., in a large set of security protocols instead of data encryption [28], because it is so expensive compared to the symmetric cryptography in data-intensive computing tasks.…”

Section: Confidentiality Protection Schemementioning

confidence: 99%

Hardware-Assisted Security Monitoring Unit for Real-Time Ensuring Secure Instruction Execution and Data Processing in Embedded Systems

et al. 2021

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The hardware security of embedded systems is raising more and more concerns in numerous safety-critical applications, such as in the automotive, aerospace, avionic, and railway systems. Embedded systems are gaining popularity in these safety-sensitive sectors with high performance, low power, and great reliability, which are ideal control platforms for executing instruction operation and data processing. However, modern embedded systems are still exposing many potential hardware vulnerabilities to malicious attacks, including software-level and hardware-level attacks; these can cause program execution failure and confidential data leakage. For this reason, this paper presents a novel embedded system by integrating a hardware-assisted security monitoring unit (SMU), for achieving a reinforced system-on-chip (SoC) on ensuring program execution and data processing security. This architecture design was implemented and evaluated on a Xilinx Virtex-5 FPGA development board. Based on the evaluation of the SMU hardware implementation in terms of performance overhead, security capability, and resource consumption, the experimental results indicate that the SMU does not lead to a significant speed degradation to processor while executing different benchmarks, and its average performance overhead reduces to 2.18% on typical 8-KB I/D-Caches. Security capability evaluation confirms the monitoring effectiveness of SMU against both instruction and data tampering attacks. Meanwhile, the SoC satisfies a good balance between high-security and resource overhead.

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Certificate‐based verifiably encrypted RSA signatures

Shao¹,

Gao

2013

Trans. Emerging Tel. Tech.

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The RSA signature scheme is one of the most popular signature schemes to date. This paper proposes a certificate-based verifiably encrypted RSA signature scheme that is the first to accomplish optimistic fair exchange of the standard RSA signatures. The main characteristic of this scheme is that the signer can unilaterally choose a certificate authority as his/her adjudicator in fair exchange. Then a certificate, or generally, a signature, acts not only as the binding of the public key and its holder but also as the certificate authority's guarantee against partiality in adjudication. We introduce a strong security model, in which there are three types of inside adversaries with more power than outside adversaries in previous verifiably encrypted RSA signature schemes. We then show that the proposed scheme is existentially unforgeable under the Discrete Logarithm (DL) assumption, the Computational Diffile-Dellman (CDH) assumption, and the RSA assumption in the random oracle model. Because the proposed scheme can be directly used in the current Public-Key Infrastructure (PKI) environment, it is more practical and trustworthy than the previous schemes in the real world.

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An Abuse-Free Fair Contract-Signing Protocol Based on the RSA Signature

Cited by 37 publications

References 45 publications

A Hard-Timeliness Blockchain-Based Contract Signing Protocol

A Hard-Timeliness Blockchain-Based Contract Signing Protocol

Hardware-Assisted Security Monitoring Unit for Real-Time Ensuring Secure Instruction Execution and Data Processing in Embedded Systems

Certificate‐based verifiably encrypted RSA signatures

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