Cryptocurrencies are rapidly finding application in areas such as Real Time Gross Settlements and Payments. Ripple is a cryptocurrency that has gained prominence with banks and payment providers. It solves the Byzantine General's Problem with its Ripple Protocol Consensus Algorithm (RPCA), where each server maintains a list of servers, called the Unique Node List (UNL), that represents the network for that server and will not collectively defraud it. The server believes that the network has come to a consensus when servers on the UNL come to a consensus on a transaction. In this paper we improve Ripple to achieve better speed, security and last mile connectivity. We implement guidelines for resilience, robustness, improved security, and efficient information propagation (IP). We enhance the system to ensure that each server receives information from across the whole network rather than just from the UNL members. We introduce the paradigm of UNL overlap as a function of IP and the trust a server assigns to its own UNL. Our design makes it possible to identify and mitigate some malicious behaviours including attempts to fraudulently Double Spend or stall the system. We provide experimental evidence of the benefits of our approach over the current Ripple scheme. We observe $\geq 99.67\%$ reduction in opportunities for double spend attacks and censorship, $1.71x$ increase in fault tolerance to $\geq 34.21\%$ malicious nodes, $\geq 4.97x$ and $98.22x$ speedup and success rate for IP respectively, and $\geq 3.16x$ and $51.70x$ speedup and success rate in consensus respectively.
翻译:加密正在迅速找到在真实时间总结算和支付等领域的应用。 Riple 是一个与银行和支付提供者越来越突出的加密货币。 它解决了拜占庭总公司的“问题 ”, 其“ 里普尔协议共识” ALgorithm (RPCA), 每一个服务器都持有一份服务器清单, 称为“ 独特节点列表 ” (UNL), 它代表着服务器的网络, 而不是集体欺诈服务器。 服务器认为当服务器在UNL 上达成交易共识时, 网络已经达成了共识。 在本文件中, 我们改进了Ripple, 以便实现更快的速度、安全和最后一英里连接。 我们实施了复原力、稳健性、安全性、高效的信息传播(IP) 。 我们加强了系统,以确保每个服务器都能从整个网络而不是仅仅从UNL成员那里获得信息。 我们引入了UNL的成功模式,作为IP的函数和服务器为自己的UNL $ 美元分配的信任。 我们的设计使得能够识别和减轻一些恶意行为, 包括试图欺诈性双重支出或拖延。 4.7 美元 美元 和不断降低目前利率 的汇率 。