encrypt-decrypt-example

The repository contains a project which shows secure but still simple way to encrypt and decrypt data using AES/GCM. One of the key features is adding IV to the beginning of encrypted values what provides possibilities to use random IV for encrypting values every time when a value is encrypted. Such approach significantly improves resistance of encrypting

How to build the project

1. Run the command mvn package

How to use generated jar

1. Go to the directory target
2. To encrypt java -jar encrypt-decrypt-example-1.0-SNAPSHOT.jar 12 128 encrypt Hi
3. To decrypt java -jar encrypt-decrypt-example-1.0-SNAPSHOT.jar 12 128 decrypt 9afjH796yPm91-L1c4mzhPH9HfW1bKXqzwg2z3ba

How to generate keystore

keytool -genseckey -keystore <keystore-name> -storetype jceks -storepass "<keystore-password>" -keyalg AES -keysize 128 -alias <key-alias> -keypass "<key-password>"

More information about AES/GCM can be found here: https://en.wikipedia.org/wiki/Galois/Counter_Mode