Rai-Choo! Evolving Blind Signatures to the Next Level

ePrint Report: Rai-Choo! Evolving Blind Signatures to the Next Level

Lucjan Hanzlik, Julian Loss, Benedikt Wagner

Blind signatures are a fundamental tool for privacy-preserving applications.
Known constructions of concurrently secure blind signature schemes either are prohibitively inefficient or rely on non-standard assumptions, even in the random oracle model.
A recent line of work (ASIACRYPT `21, CRYPTO `22) initiated the study of concretely efficient schemes based on well-understood assumptions in the random oracle model.
However, these schemes still have several major …

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