On the security of some proxy blind signature schemes

Hung Min Sun*, Bin Tsan Hsieh, Vincent S. Tseng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

A proxy blind signature scheme is a digital signature scheme which combines the properties of proxy signature and blind signature schemes. Recently, Tan et al. proposed two proxy blind signature schemes based on DLP and ECDLP respectively. Later, compared with Tan et al.'s scheme, Lal and Awasthi further proposed a more efficient proxy blind signature scheme. In this paper, we show that both Tan et al.'s schemes do not satisfy the unforgeability and unlinkability properties. Moreover, we also point out that Lal and Awasthi's scheme does not possess the unlinkability property either.

Original languageEnglish
Pages (from-to)297-302
Number of pages6
JournalJournal of Systems and Software
Volume74
Issue number3
DOIs
StatePublished - 1 Feb 2005

Keywords

  • Cryptanalysis
  • Cryptography
  • Elliptic curve
  • Proxy blind signature

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