Hello There! When i get bored in Java or PHP, i do sometime explore new thing in C/C++. I usually wanted to know more in difference way of programming language. The goal of the code that i created is very simple, which only doing a few requirements like below. You can look and check, the […]
First, generate a RSA key for signing Second, sign the jar with jarsigner You can ignore : “warning : POSIX file permission and/or symlink attributes detected. These attributes are ignored when signing and are not protected by the signature.”
Hello there! When working with AES encryption in Java, one important thing to understand is how AES handles input length, especially when using ECB mode with padding and no padding. AES is a block cipher, which means it encrypts data in fixed-size blocks. For AES, the block size is always 16 bytes. Because of this, the input data must fit into […]
Hello There! When you wanted to build a jar file from your code, you accidentally facing an error such like below : That is I because you haven’t set any duplicates Strategy in your build.gradle file. You need to add a 1 line code like below. So, the before code is : this is after […]
My Old code was 2.5.3, when I tried to migrate to springboot 3.2.4 it said….”can not resolve symbol persistence”. So I tried to replace javax to jakarta, and viola! The error has been disappeared! Reference : https://jakarta.ee/blogs/javax-jakartaee-namespace-ecosystem-progress
Welcome to Sandy’s note. This is my first post! it’s been a long time that i desired to have a personal blog for my formal/informal life journey. I did plan to have this personal blog/notes since 2011 ☺️ So, its better late than never, isn’t it? Hehe 😀