ONE$ && ZER0$

What is RMI?  RMI stands for Remote Method Invocation. It is an application programming interface (API) that allows an object running on one Java Virtual  Machine (JVM) to invoke methods on an object running on another Java Virtual Machine (JVM), client server architecture is a good example where RMI is used. Basically, RMI provides for communication between programs written in the Java programming language. Architecture  In an RMI application there are two programs, a server side program and a client side program. Inside the server side program, a remote object is created and reference of that object is made available for clients. The client side program requests the remote object from the server to invoke its methods.  (A diagram to represent RMI architecture) Stub & Skeleton? Stub is a representation the remote object in the client and its acts as a gateway for the client program. Skeleton is the object that in the server-side. stub communicates with

What is HTTPS?.. if you don't have any idea about what is HTTPS, refer my previous blog post about HTTPS . If you have an idea about HTTPS and SSL/TLS handshake, you are good to go 😊  Creating a digital  certificate We can create a digital certificate using "Java KeyStore (JKS)". This is a repository of security certificates. We can generate a keystore file using keytool command. in order to work with keytool, you must have "JAVA" installed in your computer.  keytool is a key and certificate management utility that allows users to administrate their own public/private key pairs, and the keystore file we are going to generate bellow will also be our local tomcat server's server certificate.   Options  When creating a "keystore", we need to provide some options and values to it. -genkey/-genkeypair -alias  -keyalg  -keystore  -keysize -validity -sigalg -storepass -keypass -dname  -genkey/-genkeypair -genkey