[Resource Topic] 2025/1194: Private coins extension with verifiable encryption

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Title:
Private coins extension with verifiable encryption

Authors: Oleg Fomenko

Abstract:

This paper introduces a protocol for verifiable encryption of values committed using Pedersen commitments. It enables a recipient to decrypt the hidden amount while proving its consistency with the original commitment, without revealing the value publicly. The construction combines symmetric encryption with zero-knowledge proofs and is made non-interactive via the Fiat-Shamir heuristic. The protocol is particularly useful in blockchain settings where confidential but verifiable value transfers are required.

ePrint: https://eprint.iacr.org/2025/1194

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