DBeaver - décrypter mots de passe

package com.rte_france.decofer.datapublication;

import javax.crypto.*;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.security.*;

public class DBeaver {

    // from the DBeaver source 8/23/19 https://github.com/dbeaver/dbeaver/blob/57cec8ddfdbbf311261ebd0c7f957fdcd80a085f/plugins/org.jkiss.dbeaver.model/src/org/jkiss/dbeaver/model/impl/app/DefaultSecureStorage.java#L31
    private static final byte[] LOCAL_KEY_CACHE = new byte[] { -70, -69, 74, -97, 119, 74, -72, 83, -55, 108, 45, 101, 61, -2, 84, 74 };

    static String decrypt(byte[] contents) throws InvalidAlgorithmParameterException, InvalidKeyException, IOException, NoSuchPaddingException, NoSuchAlgorithmException {
        try (InputStream byteStream = new ByteArrayInputStream(contents)) {
            byte[] fileIv = new byte[16];
            byteStream.read(fileIv);
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            SecretKey aes = new SecretKeySpec(LOCAL_KEY_CACHE, "AES");
            cipher.init(Cipher.DECRYPT_MODE, aes, new IvParameterSpec(fileIv));
            try (CipherInputStream cipherIn = new CipherInputStream(byteStream, cipher)) {
                return inputStreamToString(cipherIn);
            }
        }
    }

    static String inputStreamToString(java.io.InputStream is) {
        java.util.Scanner s = new java.util.Scanner(is).useDelimiter("\\A");
        return s.hasNext() ? s.next() : "";
    }

    public static void main(String[] args) throws Exception {
        System.out.println(decrypt(Files.readAllBytes(Paths.get("C:\\Users\\banass\\AppData\\Roaming\\DBeaverData\\workspace6\\DECOFER\\.dbeaver\\credentials-config.json"))));
    }

}