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Novel ZKRP protocol enables secure range proofs in encrypted data, suggesting advancement in financial applications.
Zero-knowledge range proofs (ZKRPs) allow a prover to convince a verifier that a committed value lies in a given interval without revealing the value itself. Such proofs are widely used in financial applications and cryptocurrencies. This paper presents a new noninteractive ZKRP protocol derived from an order-revealing encryption (ORE) construction, enabling comparisons over encrypted data. The proposed protocol adapts a large-domain ORE structure to obtain an efficient range-proof mechanism and introduces a corresponding key-management/setup procedure. We discuss correctness, security considerations under standard ORE leakage, and provide performance and memory estimates.
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Sergey Abrahamyan (2026) studied this question.
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