Security

Attacking M&M Collective Signature Scheme

Download Now Free registration required

Executive Summary

A collective signature scheme aims to solve the problem of signing a message by multiple signers. Recently, Moldovyan and Moldovyan proposed a scheme for collective signatures based on Schnorr signatures. The authors show some security weaknesses of the scheme. Digital signature schemes are important cryptographic constructions with wide and diverse applications. A collective signature scheme aims to solve the problem of signing a message by multiple signers (in a more efficient manner than concatenating individual signatures of the signers). Various constructions of such schemes are known, often satisfying additional requirements, e.g. threshold signatures, blind signatures, etc.

  • Format: PDF
  • Size: 230.2 KB