diff --git a/app.js b/app.js
index 20a91af..d08cb2b 100644
--- a/app.js
+++ b/app.js
@@ -33,6 +33,26 @@ app.use(bodyParser.urlencoded({extended: false}));
 app.use(express.json())
 
 
+function hashPassword(plaintextPassword) {
+    bcrypt.hash(plaintextPassword, 10)
+        .then(hash => {
+            return hash;
+        })
+        .catch(err => {
+            console.log(err)
+        })
+}
+
+function comparePassword(plaintextPassword, hash) {
+    bcrypt.compare(plaintextPassword, hash)
+        .then(result => {
+            return result;
+        })
+        .catch(err => {
+            console.log(err)
+        })
+ }
+
 // *******************************************    Arrivée sur la page d'accueil    *******************************************
 app.get("/", (req, res) => { 
     let today = dateFormat(new Date(), "yyyymmdd");
@@ -100,7 +120,7 @@ app.post("/auth/register", (req, res) => {
                 }
             })
 
-            let hashedPassword = await bcrypt.hash(password, 8);
+            let hashedPassword = hashPassword(password);
             db.query('INSERT INTO user SET?', {gender : (gender != undefined ? gender : ""), firstname: firstname, name: name, title: title, email: email, nickname : nickname, password: hashedPassword}, (err, result) => {
                 if(error) {
                     console.log(error)
@@ -113,7 +133,9 @@ app.post("/auth/register", (req, res) => {
 })
 
 // *******************************************    Connexion sur le compte utilisateur    *******************************************
-app.post("/auth/check-login", (req, res) => {    
+app.post("/auth/check-login", (req, res) => {
+    var userId, 
+        passwordStocke; 
     const { email, nickname, password, role, session } = req.body
 
     if (email == '' && nickname == '') {
@@ -124,7 +146,14 @@ app.post("/auth/check-login", (req, res) => {
         })
     }
 
-    db.query('SELECT * FROM user WHERE email = ? OR nickname = ?', [email,nickname], async (error, result) => {
+    let requete = '';
+    if (nickname != '') {
+        requete = "SELECT * FROM user WHERE UPPER(nickname) = '?'".replace("?", nickname.toUpperCase());
+    }
+    if (email != '') {
+        requete = "SELECT * FROM user WHERE UPPER(email) = '?'".replace("?", email.toUpperCase());
+    }
+    db.query(requete, async (error, result) => {
         if(error){
             console.log(error)
         }
@@ -137,44 +166,41 @@ app.post("/auth/check-login", (req, res) => {
             })
         }
 
-        var userId = result[0].ID
-        bcrypt.compare(password, result[0].password, function(err, result) {
-            if(result) {
-
-                // Le user est connecté avec succès : on vérifie qu'il n'est pas déjà inscrit à la session et si pas le cas, on l'inscrit et on incrémente le compteur des participants
-                db.query('SELECT * FROM participation WHERE user = ?', [userId], async (error, result) => {
-                    if(error) {
-                        console.log(error)
-                    }
-
-                    if (result.length == 0) {
-                        db.query('INSERT INTO participation (user, session, role_during_session) VALUES (?,?,?)', [userId, session[0], role[0]], function (err, result) {
-                            if (err) throw err;
-                            console.log("1 record inserted");
-                          });
-
-                        db.query('UPDATE session SET nb_of_participants = nb_of_participants + 1 WHERE ID=?', session, function (err, result) {
-                            if (err) throw err;
-                            console.log("1 record updated");
-                          });
-                    }
-                })
-
-                if (role == 'A') {
-                    res.redirect('https://slave.thecoredev.fr');
+        userId = result[0].ID;
+        if (comparePassword(password, result[0].password)) {
+            // Le user est connecté avec succès : on vérifie qu'il n'est pas déjà inscrit à la session et si pas le cas, on l'inscrit et on incrémente le compteur des participants
+            db.query('SELECT * FROM participation WHERE user = ?', [userId], async (error, result) => {
+                if(error) {
+                    console.log(error)
                 }
-                else {
-                    res.redirect('https://master.thecoredev.fr');
+
+                if (result.length == 0) {
+                    db.query('INSERT INTO participation (user, session, role_during_session) VALUES (?,?,?)', [userId, session[0], role[0]], function (err, result) {
+                        if (err) throw err;
+                        console.log("1 record inserted");
+                        });
+
+                    db.query('UPDATE session SET nb_of_participants = nb_of_participants + 1 WHERE ID=?', session, function (err, result) {
+                        if (err) throw err;
+                        console.log("1 record updated");
+                        });
                 }
+            })
+
+            if (role == 'A') {
+                res.redirect('https://slave.thecoredev.fr');
             }
             else {
-                return res.render('login', {
-                    error: 'Mot de passe incorrect : corriger votre saisie',
-                    "session": session,
-                    "role": role
-                })
+                res.redirect('https://slave.thecoredev.fr');
             }
-        })
+        }
+        else {
+            return res.render('login', {
+                error: 'Mot de passe incorrect : corriger votre saisie',
+                "session": session,
+                "role": role
+            })
+        }
     })
 })
 
diff --git a/package.json b/package.json
index 6c8387a..c580f05 100644
--- a/package.json
+++ b/package.json
@@ -18,8 +18,10 @@
     "dotenv": "^16.3.1",
     "express": "^4.18.2",
     "hbs": "^4.2.0",
-    "mysql": "^2.18.1",
-    "wrtc": "^0.4.7",
-    "ws": "^8.14.2"
+    "mysql": "^2.18.1"
+  },
+  "engines": {
+    "npm": ">=7.0.0 <8.0.0",
+    "node": ">=18.0.0 <19.0.0"
   }
 }