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Lecture Notes in Computer Science
Round-optimal blind signatures are notoriously hard to construct in the standard model, especially in the malicious-signer model, where blindness must hold under adversarially chosen keys. This is substantiated by several impossibility results. The only construction that can be termed theoretically efficient, by Garg and Gupta (Eurocrypt'14), requires complexity leveraging, inducing an exponential security loss. We present a construction of practically efficient round-optimal blind signaturesdoi:10.1007/978-3-662-48000-7_12 fatcat:qkhhfijxavbalpg3f3nrp34sge