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


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
Issue number3
StatePublished - 1 Feb 2005


  • Cryptanalysis
  • Cryptography
  • Elliptic curve
  • Proxy blind signature

Fingerprint Dive into the research topics of 'On the security of some proxy blind signature schemes'. Together they form a unique fingerprint.

Cite this