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What is a partially blind signature?
In 200 1, Zhang et al. proposed a digital signature and blind signature scheme based on elliptic curve, and then proposed a new threshold blind signature scheme based on the verifiability of elliptic curve. The scheme has the security characteristics of verifiability, blindness, robustness and unforgeability. Its security depends not only on the difficulty of discrete logarithm decomposition of elliptic curve, but also on the choice of elliptic curve and elliptic curve cryptosystem. Through comparative analysis, it can be seen that the computational and communication complexity of this scheme is slightly lower than that of Zhuo Zhen and others.

I wonder if this is it?