Paper 2018/915

On the Security of a Certificateless Strong Designated Verifier Signature Scheme

Nasrollah Pakniat

Abstract

Recently, Chen et al. proposed the first non-delegatable certificateless strong designated verifier signature scheme and claimed that their scheme achieves all security requirements. However, in this paper, we disprove their claim and present a concrete attack which shows that their proposed scheme is forgeable. More precisely, we show that there exist adversaries who are able to forge any signer's signature for any designated verifier on any message of his choice.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
Certificateless cryptographyCryptanalysisDesignated verifier signatureNon-delegatability
Contact author(s)
pakniat @ irandoc ac ir
History
2018-09-26: received
Short URL
https://ia.cr/2018/915
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2018/915,
      author = {Nasrollah Pakniat},
      title = {On the Security of a Certificateless Strong Designated Verifier Signature Scheme},
      howpublished = {Cryptology ePrint Archive, Paper 2018/915},
      year = {2018},
      note = {\url{https://eprint.iacr.org/2018/915}},
      url = {https://eprint.iacr.org/2018/915}
}
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