# A Practical Post-Quantum Distributed Ledger Protocol for Financial Institutions

DevFeed: [A Practical Post-Quantum Distributed Ledger Protocol for Financial Institutions](<https://devfeed.tech/articles/a-practical-post-quantum-distributed-ledger-protocol-for-financial-institutions-122763.md>)

Original publisher: [Read original article](<https://arxiv.org/abs/2603.05005>)

Author: Yeoh Wei Zhu, Naresh Goud Boddu, Yao Ma, Shaltiel Eloul, Giulio Golinelli, Yash Satsangi, Rob Otter, Kaushik Chakraborty

Published: 2026-11-09T05:00:00Z

Content type: article

Language: en

Sources: [arXiv: Cryptography and Security](<https://devfeed.tech/sources/arxiv-cryptography-and-security.md>)

Topics: [Cryptography](<https://devfeed.tech/topics/cryptography.md>), [Post-quantum cryptography](<https://devfeed.tech/topics/post-quantum-cryptography.md>), [Zero-knowledge proof](<https://devfeed.tech/topics/zkp.md>), [Blockchain](<https://devfeed.tech/topics/blockchain.md>), [cryptographic audit](<https://devfeed.tech/topics/cryptographic-audit.md>)

Tags: [assets](<https://devfeed.tech/tags/assets.md>), [cs-cr](<https://devfeed.tech/tags/cs-cr.md>), [distributed](<https://devfeed.tech/tags/distributed.md>), [encrypted](<https://devfeed.tech/tags/encrypted.md>), [financial-institutions](<https://devfeed.tech/tags/financial-institutions.md>), [lattice](<https://devfeed.tech/tags/lattice.md>), [post-quantum](<https://devfeed.tech/tags/post-quantum.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [private](<https://devfeed.tech/tags/private.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [security](<https://devfeed.tech/tags/security.md>), [transaction](<https://devfeed.tech/tags/transaction.md>), [zero-knowledge](<https://devfeed.tech/tags/zero-knowledge.md>)

## AI overview

The paper proposes a post-quantum, lattice-based transaction scheme for encrypted ledgers, aiming to meet financial institutions' confidentiality and auditability needs. It combines zero-knowledge proofs with a method for equating commitment messages during re-commitment without opening one of them, then builds a publicly verifiable scheme for single- or multi-asset transactions using a compact range proof. The abstract says the authors provide a security analysis; it does not give implementation details or quantitative performance results.

## Source excerpt

arXiv:2603.05005v2 Announce Type: replace Abstract: Traditional financial institutions face inefficiencies that can be addressed by distributed ledger technology. However, a primary barrier to adoption is the privacy concerns surrounding publicly available transaction data. Existing private protocols for distributed ledger that focus on the Ring-CT model are not suitable for adoption for financial institutions. We propose a post-quantum, lattice-based transaction scheme for encrypted ledgers which better aligns with institutions' requirements for confidentiality and audit-ability. The construction leverages various zero-knowledge proof techniques, and introduces a new method for equating two commitment messages, without the capability to open one of the commitment during the re-commitment. Subsequently, we build a publicly verifiable transaction scheme that is efficient for single or multi-assets, by introducing a new compact range-proof. We then provide a security analysis of it. The techniques used and the proofs constructed could be of independent interest.