Mar 10, 2021PoW Shield: Application Layer Proof of Work DDoS FilterSpamming and DDoS attacks have increased by a large margin in the past few years. While there are already a lot of rigid mitigation methods for guarding against lower-layer attacks(such as SYN or ICMP flooding, Smurf attack, DNS amplification, and more), implementation on application layer prove to be more troubling. …Ddos3 min readDdos3 min read
Feb 24, 2021X.509 Public Key Infrastructure Mechanism Overview — a bottom-up approachPublic key infrastructures plays an important role in our everyday lives, from internet browsing to secure transmission of sensitive materials. Among common PKIs, X.509 is currently the most popular and the default choice. Today, we’ll talk about how it works. Overview Here’s a brief view of what we’re going to cover …X5097 min readX5097 min read
Jan 8, 2021Introduction to Privacy Features of Monero (XMR)With the cryptocurrency industry booming, privacy on the blockchain has become an increasing concern. Since major tokens such as Bitcoin, Ethereum, and Litecoin only attain pseudo-anonymity, a project to implement privacy on cryptocurrency came into being. The following article will focus on the privacy aspect of Monero, the ultimate privacy…Monero4 min readMonero4 min read
Jan 8, 2021chatNT — Anonymous P2P Chat Application in C++chatNT Github Repo: https://github.com/RuiSiang/chatNT Overview chatNT(chat Not Tracable) is an anonymous p2p chat application in C++ based on onion relay concept. Motivation In the past few years, freedoms of speech and press has been steeply violated all around the world. …Privacy3 min readPrivacy3 min read
Sep 15, 2020Monero(XMR) RandomX PoW Algorithm ExplainedAmong proof of work algorithms(PoW), randomx is an algorithm tailored specifically for the privacy-oriented cryptocurrency Monero(XMR) and is well-known for several unique properties RandomX properties at a glance CPU-oriented, giving GPU/FPGA-mining a significant disadvantage. Dynamic work, implementing a nearly ASIC-proof property. Memory threshold, makes botnet/malware mining easily detectable and in some cases unable to undergo…Monero3 min readMonero3 min read
Sep 4, 2020Hyperledger Fabric 2.2 SDK for Node.js (Node-SDK) TutorialEdit: module is now available on npm as fabric-network-simple Hyperledger Fabric is a common approach when implementing decentralized solutions for commercial scenarios. The following article will mainly focus on calling chaincode apis from remote. This article assumes that you have basic knowledge about how Hyperledger Fabric works and have a…Hyperledger Fabric3 min readHyperledger Fabric3 min read
