Efficient ID-based Threshold Signature Schemes without Pairings

  title={Efficient ID-based Threshold Signature Schemes without Pairings},
  author={Jun Shao and Zhenfu Cao and Licheng Wang},
  journal={IACR Cryptology ePrint Archive},
The focus of this paper is to design an efficient and secure solution addressing the key escrow problem in ID-based signature schemes, i.e., the Private Key Generator (PKG) knows the user’s private key, which damages the essential requirement–“non-repudiation” property of signature schemes. In this paper, we proposed two ID-based threshold signature schemes, which both reach Girault’s trusted level 3, and in which there exists only one PKG in our ID-based threshold signature schemes. In… CONTINUE READING


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