Validity Models of Electronic Signatures and Their Enforcement in Practice

Baier, Harald; Karatsiolis, Vangelis

doi:10.1007/978-3-642-16441-5_17

Cited by 6 publications

(3 citation statements)

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“…It is the first postulate for a digital signature to be valid. The second one applies to the validity of digital signatures at a semantical level that depends on the underlying validity model (Baier, H. et al [ 1 ]).…”

Section: A Novel Revocable Implicit and Explicit Certificates-based S...mentioning

confidence: 99%

“…Three models for certificate validation exist [ 1 ]. In the first one, called the shell model , the certificate is valid as long as all the certificates in the certification path are valid when the signature is verified.…”

Section: Introductionmentioning

confidence: 99%

“…The third model is the chain model : once a signature is valid at signing time, it remains valid all the time. The chain model can only provide non-repudiation of property over a long period of time [ 1 , 2 ].…”

Section: Introductionmentioning

confidence: 99%

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Revocable Signature Scheme with Implicit and Explicit Certificates

Pejaś,

Hyla,

Zabierowski

2023

Entropy

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This paper addresses the certificate revocation problem and proposes the first revocable pairing-based signature scheme with implicit and explicit certificates (IE-RCBS-kCAA). We should no longer discuss whether to revoke certificates but how to do it effectively, ensuring both the scalability of the revocation operation and the non-repudiation of the signature in the short or long term. Under the computational difficulty assumptions of the modified collusion attack algorithm with k traitors (k-mCAA) and discrete logarithm (DL) problems, we demonstrate that our scheme is secure against existential unforgeability under chosen message attacks (EUF-IERCBS-kCAA-CMA) in a random oracle model. The proposed solution is scaled and allows the use of many trusted status authorities that issue explicit short-term certificates confirming the validity of explicit long-term certificates. Furthermore, we demonstrate that our signature scheme has a short-term non-repudiation property for the shell validity model.

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Section: A Novel Revocable Implicit and Explicit Certificates-based S...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%