A threshold GQ signature scheme

Li Shan Liu*, Cheng Kang Chu, Wen-Guey Tzeng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


We proposed the first threshold GQ signature scheme. The scheme is unforgeable and robust against any adaptive adversary if the base GQ signature scheme is unforgeable under the chosen message attack and computing the discrete logarithm modulo a safe prime is hard. Furthermore, our scheme can achieve optimal resilience by some modification.


  • GQ signature scheme
  • Thershold signature scheme

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