From 9ee4b94040380d35caf25a43b82574d63b50777f Mon Sep 17 00:00:00 2001
From: elisabetta <raioneelisabetta28@gmail.com>
Date: Sat, 28 Mar 2026 12:42:02 +0100
Subject: [PATCH] hey hey hey

---
 backend/src/main/java/com/crypto/Seal.java | 20 ++++++++++++--------
 backend/src/main/resources/get/rsa.js      | 10 ++++++++--
 2 files changed, 20 insertions(+), 10 deletions(-)

diff --git a/backend/src/main/java/com/crypto/Seal.java b/backend/src/main/java/com/crypto/Seal.java
index 419ad81..1d9d128 100644
--- a/backend/src/main/java/com/crypto/Seal.java
+++ b/backend/src/main/java/com/crypto/Seal.java
@@ -1,10 +1,9 @@
 package com.crypto;
+import java.math.BigInteger;
+
 import io.javalin.Javalin;
 
 public class Seal {
-
-    // Il mazzo di chiavi !!
-    public static RSA.RSAkeys keys;
     public static void main(String[] args) {
         
         // Avvio del server web
@@ -33,21 +32,24 @@ public class Seal {
         app.post("/seal/rsa/encrypt", ctx -> {
             // Legge i dati nel body dalla richiesta
             Richiesta req = ctx.bodyAsClass(Richiesta.class); 
-            keys = RSA.defkeys(req.keysize / 2);
+            RSA.RSAkeys keys = RSA.defkeys(req.keysize / 2);
             String ciphertext = RSA.encrypt(req.text,keys.e(), keys.n());
-            ctx.result(ciphertext);
+            ctx.result("{\"ciphertext\":"+ciphertext+",\"keys\":{\"d\":" + keys.d().toString() + ",\"n\":"  + keys.n().toString() +  "}}");
         });
 
         // Decifratura con RSA
         app.post("/seal/rsa/decrypt", ctx -> {
             // Legge i dati nel body dalla richiesta
             Richiesta req = ctx.bodyAsClass(Richiesta.class);
-            
+        
+            BigInteger d = new BigInteger(req.d);
+            BigInteger n = new BigInteger(req.n);
+
             // Usa il metodo RSA per cifrare
-            String plaintext = RSA.decrypt(req.text, keys.d(), keys.n());
+            String plaintext = RSA.decrypt(req.text, d, n);
 
             // Restituisce il risultato della cifratura
-            ctx.result(plaintext.replaceAll("\\\\u0000", ""));
+            ctx.result(plaintext.replaceAll("\\\\u0000/g", ""));
         });
     }
 }
@@ -56,6 +58,8 @@ public class Seal {
 class Richiesta {
     public int keysize;
     public String text;
+    public String d;
+    public String n;
     
     // Costruttore della richiesta
     public Richiesta() {} 
diff --git a/backend/src/main/resources/get/rsa.js b/backend/src/main/resources/get/rsa.js
index 283b758..ebb692e 100644
--- a/backend/src/main/resources/get/rsa.js
+++ b/backend/src/main/resources/get/rsa.js
@@ -1,3 +1,6 @@
+let d = "";
+let n = "";
+
 async function encrypt() {
     const plaintext = document.getElementById("plaintext").value;
     const size = document.getElementById("keysize").value;
@@ -11,7 +14,10 @@ async function encrypt() {
             method: "POST", headers: { "Content-Type": "application/json" },
             body: JSON.stringify({ text: plaintext, keysize: parseInt(size) })
         });
-        document.getElementById("ciphertext").value = await res.text();
+        const answer = await res.json();
+        document.getElementById("ciphertext").value = answer.ciphertext;
+        d = answer.d;
+        n = answer.n;
     } catch (e) { alert("Impossibile connettersi al server Javalin."); }
 }
 
@@ -24,7 +30,7 @@ async function decrypt() {
     try {
         const res = await fetch("/seal/rsa/decrypt", {
             method: "POST", headers: { "Content-Type": "application/json" },
-            body: JSON.stringify({ text: input })
+            body: JSON.stringify({ text: input, n: n, d: d })
         });
         document.getElementById("decodedtext").value = await res.text();
     } catch (e) { alert("Impossibile connettersi al server."); }