Published in Dev Genius·PinnedWebRTC Chat ApplicationLately, I am attracted to exploring more about peer-to-peer solutions. One of which is using WebRTC for its protocol. WebRTC is a protocol for a web application that has been available in many recent versions of major browsers, like Chrome, Firefox, etc. In this posting, I will explain how I…Web RTC3 min read
Published in DevOps.dev·Jul 11Jenkins + Gitlab + Sonarqube + Maven Integration: DevOps ConfigurationIn this article, I will explain about how to create a DevOps lab environment to test integration of gitlab + jenkins + sonarqube + maven. Prerequisites Several tools need to be installed on your environment. The host that I use have more than 16 GB RAM, so you should also…Jenkins6 min read
Published in Dev Genius·Jul 6What is Hardware Security Module? A Brief ExplanationI would like to discuss about Hardware Security Module (HSM) and several technologies around it. This will contains brief explanation about HSM, where to learn about it and code example of how to use it. Definition HSM is a physical device that protect and manage digital keys and provides crypto-processing…Hardware Security Module3 min read
Published in Level Up Coding·May 28WebRTC Client Chat App Using ReactIn this article, I will explain about creating a WebRTC chat client using React. This article uses the interaction diagram as described in this blog, and interact with signaling server described in this blog. Problem Statements WebRTC Chat Application using React , Using signaling server as described in this blog, …Web RTC2 min read
Published in Towards Dev·May 16Sending Notification using LINE Notify API, React and NetlifyIn this article, I would like to show how to use LINE Notify service to send notification message to LINE users. You can read more detail about the service in this link. Problem statements Using LINE Notify to send notification to LINE users High Level Solution The flow for the…Line3 min read
Published in Javarevisited·May 9WebRTC Signaling Server Example Using Spring BootIn this article, I will explain about building a simple Signaling Server to be used in WebRTC Chat application. I have not found many article about this subject, so I hope that this article will help you to get a basic understanding of signaling operation in WebRTC Chat Application. Problem…Web RTC3 min read
Published in Level Up Coding·Apr 24Key Wrapping in JavascriptWhen I researched about key wrapping in Javascript, I did not find any concrete example of the implementation. That is why I’m writing this article to show an example of Key Wrapping using Javascript. Key Wrapping itself is an activity of encrypting a Crypto Key with another Crypto Key. …Webcrypto2 min read
Published in Javarevisited·Dec 8, 2021Keycloak Integration with External Existing DatabaseI’ve used Keycloak many times as Identity and access management solution. One of the problem I’ve encountered is when we want to migrate our authentication into keycloak and we still have many users and password that are stored in our current external database. So what is the solution? Problem statements …Keycloak2 min read
Published in Javarevisited·Dec 6, 2021Simple Digital Signature Validation on PDF1. Introduction — Based on wikipedia, digital signature(DS) is a mathematical scheme for verifying the authenticity of digital messages or documents. It have been used as a tool for non-repudiation. The type of digital signature put in PDF are varied from a message digest to another type signature (CMS Advanced Electronic Signatures or…Digital Signatures4 min read
