Pay as You Go: A Generic Crypto Tolling Architecture

隐私保护数字支付系统的 hitchhiker 指南：对匿名性、保密性和可审计性的调查

A Hitchhiker's Guide to Privacy-Preserving Digital Payment Systems: A Survey on Anonymity, Confidentiality, and Auditability

本文综述了隐私保护数字支付系统，涵盖去中心化账本和CBDCs，提出隐私目标分类及对应密码学方法，并探讨隐私与可审计性之间的平衡挑战。

Crypto Currency Regulation and Law Enforcement Perspectives

This paper provides an overview of how crypto currency and blockchain engineering interacts with the law enforcement. We point out that a large proportion of crypto users are amateur investors and the dominant and the largest segment in crypto crime are simply investment scams (!). We look at various questions of criminal use and misuse of technology, especially in the areas of money laundering or cashing out the profits originating from illicit activities. The aim of the paper is to raise a set of concerns arising in the criminal justice and policing circles, based on the interviews with law …

后量子密码学如何影响央行数字货币？

How does post-quantum cryptography affect Central Bank Digital Currency?

本研究探讨量子计算对央行数字货币密码安全的威胁，分析系统中典型资产，提出后量子密码学升级策略以应对新攻击向量。

使用 Merkle 哈希树的去中心化数字货币系统

Decentralized Digital Currency System using Merkle Hash Trees

本文提出了一种基于Merkle哈希树和点对点架构的去中心化数字货币系统DDCS及货币$δ$-Money，旨在替代实物货币，由多家支付银行发行以实现稳定估值与去中介化交易。

使用基于安全元件的系统平衡离线 CBDC 交易中的合规性与隐私

Balancing Compliance and Privacy in Offline CBDC Transactions Using a Secure Element-based System

针对离线 CBDC 支付中隐私保护与 AML/CFT 合规的冲突，提出基于安全元件和数字凭证的支付原型，可灵活适配监管环境并达到商用级延迟。

Bitcoin and quantum computing

Bitcoin is a digital currency and payment system based on classical cryptographic technologies which works without a central administrator such as in traditional currencies. It has long been questioned what the impact of quantum computing would be on Bitcoin, and cryptocurrencies in general. Here, we analyse three primary directions that quantum computers might have an impact in: mining, security, and forks. We find that in the near-term the impact of quantum computers appear to be rather small for all three directions. The impact of quantum computers would require considerably larger number o…