From 8b594bfe842c2c4c56df5caa0064366b6e5fa9b7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Luc=C3=A0s?= <vabrelucas@gmail.com>
Date: Thu, 27 Oct 2022 21:17:59 +0200
Subject: [PATCH] Triple Des

---
 src/cryptography/TripleDes.java          | 29 ++++++++++++++++++++++++
 src/cryptography/temp/testTripleDes.java | 19 ++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 src/cryptography/TripleDes.java
 create mode 100644 src/cryptography/temp/testTripleDes.java

diff --git a/src/cryptography/TripleDes.java b/src/cryptography/TripleDes.java
new file mode 100644
index 0000000..64e03bf
--- /dev/null
+++ b/src/cryptography/TripleDes.java
@@ -0,0 +1,29 @@
+package cryptography;
+
+public class TripleDes {
+
+    private final Des[] listeDes;
+
+    public TripleDes() {
+        this.listeDes = new Des[]{new Des(), new Des(), new Des(),};
+    }
+
+    public int[] crypte(String messageClair) {
+        String resultat = messageClair;
+
+        for (Des des : listeDes) {
+            resultat = Des.bitsToString(des.crypte(resultat));
+        }
+        return Des.stringToBits(resultat);
+    }
+
+    public String decrypte(int[] messageCrypte) {
+        int[] resultat = messageCrypte;
+
+        // Il faut décripter dans le sens inverse, donc de l'index le plus grand vers le plus petit
+        for (int i = listeDes.length - 1; i >= 0; i--) {
+            resultat = Des.stringToBits(listeDes[i].decrypte(resultat));
+        }
+        return Des.bitsToString(resultat);
+    }
+}
diff --git a/src/cryptography/temp/testTripleDes.java b/src/cryptography/temp/testTripleDes.java
new file mode 100644
index 0000000..69d4f98
--- /dev/null
+++ b/src/cryptography/temp/testTripleDes.java
@@ -0,0 +1,19 @@
+package cryptography.temp;
+
+import cryptography.Des;
+import cryptography.TripleDes;
+
+public class testTripleDes {
+
+    public static void main(String[] args) {
+        TripleDes tripleDes = new TripleDes();
+
+        String message = "Hello";
+
+        int[] messageCrypte = tripleDes.crypte(message);
+        String messageDecrypte = tripleDes.decrypte(messageCrypte);
+
+        System.out.printf("\"%s\" -> \"%s\" -> \"%s\"", message, Des.bitsToString(messageCrypte), messageDecrypte);
+    }
+    
+}