How to Encrypt / Decrypt with AES in Java 1.8

Here I have created a class that does it in two different ways, the first one is, when you create the key, and the other is when you are given the key, valid key sizes are 128, 192, and 256 for AES algorithm. There is some steps to follow before executing the code provied, if you don’t probably this class …

How to convert byte array to hex string in Java 1.8

If you like cryptography you might know that sometimes you have a byte array which you wish to convert to hexadecimal string. In java, to this day, I haven’t found yet a native class that does it, I’ve spent several minutes on the Internet looking for something like the Base64 class. Turns out Apache commons has a class called Hex.java …