add SHA Hash externe

Author: Aristylux

dev/HASH_generator/SHAHash.class

@@ -0,0 +1,76 @@
+import java.nio.charset.StandardCharsets;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class SHAHash {
+
+    /**
+     * It is the same domain as the class 'SHAHash.java' from the app.
+     */
+    public static final String DOMAIN = "com.aristy.gogocar";
+
+    /**
+     * Main method
+     * @param args
+     */
+    public static void main(String[] args){
+        if (args.length < 1) {
+            System.out.println("Need an argument. abord. ");
+            System.out.println("Try 'cat --help' for more information.");
+            return;
+        }
+        if (args.length > 2){
+            System.out.println("Too many arguments. abord. ");
+            System.out.println("Try 'cat --help' for more information.");
+            return;
+        }
+        if (args[0].equals("--help") || args[0].equals("-h")){
+            System.out.println("Usage: java SHAHash [TEXT] [DOMAIN]");
+            System.out.println("Hash TEXT using SHA-512.\n");
+            System.out.println("-h, --help      display this help and exit.\n");
+            return;
+        }
+
+        String domain = (args.length == 1) ? DOMAIN : args[1];
+        String hash = hashPassword(args[0], domain);
+
+        System.out.println("Hashed text: " + hash + " , len " + hash.length());
+    }
+
+    /**
+     * Hash a text using SHA-512
+     * @param password text
+     * @param domain domain or salt
+     * @return thje hash
+     */
+    public static String hashPassword(String password, String domain) {
+        String pw = password + domain;
+        MessageDigest sha;
+        byte[] byteData;
+        try {
+            sha = MessageDigest.getInstance("SHA-512");
+            byteData = sha.digest(pw.getBytes(StandardCharsets.UTF_8));
+            return convertHex(byteData);
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+            return "";
+        }
+    }
+
+    /**
+     * Convert byte array to String
+     * @param byteData bytes
+     * @return String
+     */
+    private static String convertHex(byte[] byteData){
+        StringBuilder hexString = new StringBuilder();
+        for (byte byteDatum : byteData) {
+            String hex = Integer.toHexString(0xff & byteDatum);
+            if (hex.length() == 1) hexString.append('0');
+            hexString.append(hex);
+        }
+        return hexString.toString();
+    }
+
+
+}

dev/HASH_generator/SHAHash.java

@@ -0,0 +1,66 @@
+
+
+This document gathers the actions to set up the HASH generator for the modules "mi carro es tu carro".
+
+# Frist time
+
+To use the software you must have java installed on your machine.
+
+## Installation
+
+```bash
+~$ sudo dnf install java-11-openjdk
+```
+
+## Execution
+
+```bash
+~$ java SHAHash
+```
+
+## Exemple of use
+
+### Hash simple
+
+```bash
+~$ java SHAHash "hes"
+Hashed text: 19dd4469b2fc7b78eca66ab48dcfb52654842866c6587d5e01a67845e41c53466ce5851ecd809c52b906976530a8637ed857dc301c8b24a221cbec0f8155a16c , len 128
+~$
+```
+
+### Hash with domain
+
+```bash
+~$ java SHAHash "hes" "f"
+Hashed text: 4d385ee3b33c37ba8e317f071d432a19ce53cdad9679c3059266888b96bb891503236acc65e09736f1f3cee6222b75b4dcd0b852b0312d0e8a83465324b78f27 , len 128
+~$
+```
+
+### Exemple with MAC address
+
+```bash
+~$ java SHAHash "4A:E5:FF:A7:25:9F"
+Hashed text: 588d80d54a9c0af7cc5f034e013d17732221a5d583bc5812e21b62d7299c98660080c9910bf62385d5e89d486a2622157db777078576f94f5a17d0098e1a4968, len 128
+~$
+```
+
+
+# Install from source
+
+To run the program from the .java file, you must have the development version.
+
+## Installation
+
+```bash
+~$ sudo dnf install java-11-openjdk-devel
+```
+
+## Execution
+
+```bash
+~$ javac SHAHash.java 
+
+~$ java SHAHash 
+Need an argument. abord. 
+Try 'cat --help' for more information.
+```