Security of a multisignature scheme for specified group of verifiers

Jiqiang Lv, X. Wang, K. Kim

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

A multisignature scheme for specified group of verifiers needs a group of signers’ cooperation to sign a message to a specified group of verifiers that must cooperate to check the signature’s validity later. Recently, Zhang et al. proposed a new multisignature scheme for specified group of verifiers. However, we find that Zhang et al.’s scheme cannot prevent a dishonest clerk of signing group from changing the signing message to another message of his choice while he is cooperating with the signers to produce a multisignature. Therefore, their scheme is insecure.
Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalApplied Mathematics and Computation
Volume166
Issue number1
DOIs
Publication statusPublished - 2005

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