diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/account/FileAccountDao.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/account/FileAccountDao.java
index 3695b015..24364a18 100644
--- a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/account/FileAccountDao.java
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/module/account/FileAccountDao.java
@@ -5,7 +5,7 @@ import com.pqt.core.entities.user_account.AccountLevel;
 import com.pqt.server.tools.io.ISerialFileManager;
 import com.pqt.server.tools.io.SimpleSerialFileManagerFactory;
 import com.pqt.server.tools.security.IHashTool;
-import com.pqt.server.tools.security.MD5HashTool;
+import com.pqt.server.tools.security.SHA256HashTool;
 
 import java.util.*;
 import java.util.stream.Collectors;
@@ -19,7 +19,7 @@ import java.util.stream.Collectors;
  * Cette classe n'est pas faite pour gérer les accès concurentiels au fichier assurant la persistance, et n'est donc pas
  * thread-safe. Elle est conçue pour que tous les accès soient effectués depuis un même thread et depuis un unique objet.
  * <p/>
- * Cette classe manipule les mot de passe sous forme chiffrée via un système de hash (md5) + salt, et ne fait pas
+ * Cette classe manipule les mot de passe sous forme chiffrée via un système de hash (SHA-256) + salt, et ne fait pas
  * persister les mots de passes non-chiffrées. Les noms d'utilisateurs sont stockés sans chiffrage.
  */
 class FileAccountDao implements IAccountDao {
@@ -34,7 +34,7 @@ class FileAccountDao implements IAccountDao {
     FileAccountDao() {
         accountEntries = new HashSet<>();
         connectedAccount = new HashSet<>();
-        hashTool = new MD5HashTool();
+        hashTool = new SHA256HashTool();
         fileManager = SimpleSerialFileManagerFactory.getFileManager(AccountEntry.class, ACCOUNT_FILE_NAME);
         loadFromFile();
     }
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/AbstractSimpleHashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/AbstractSimpleHashTool.java
new file mode 100644
index 00000000..0cf31c97
--- /dev/null
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/AbstractSimpleHashTool.java
@@ -0,0 +1,39 @@
+package com.pqt.server.tools.security;
+
+import java.math.BigInteger;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public abstract class AbstractSimpleHashTool implements IHashTool {
+
+    private static final String DEFAULT_INSTANCE_CODE = "SHA-256";
+
+    private String instanceCode;
+
+    @Override
+    public final String hashAndSalt(String input, String salt) {
+        String encryptedInput = null;
+
+        if(input == null || salt == null) return null;
+
+        try {
+            String str = salt+input;
+            //Create MessageDigest object with the instance code
+            MessageDigest digest = (instanceCode!=null?MessageDigest.getInstance(instanceCode):MessageDigest.getInstance(DEFAULT_INSTANCE_CODE));
+
+            //Update input string in message digest
+            digest.update(str.getBytes(), 0, str.length());
+
+            //Converts message digest value in base 16 (hex)
+            encryptedInput = new BigInteger(1, digest.digest()).toString(16);
+
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        return encryptedInput;
+    }
+
+    protected void setInstanceCode(String instanceCode){
+        this.instanceCode = instanceCode;
+    }
+}
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java
index 57cee938..9fefd6dc 100644
--- a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/IHashTool.java
@@ -1,5 +1,5 @@
 package com.pqt.server.tools.security;
 
 public interface IHashTool {
-    String hashAndSalt(String str, String salt);
+    String hashAndSalt(String input, String salt);
 }
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java
index ffb2ebca..b3b34da9 100644
--- a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/MD5HashTool.java
@@ -4,27 +4,8 @@ import java.math.BigInteger;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 
-public class MD5HashTool implements IHashTool{
-    @Override
-    public String hashAndSalt(String input, String salt) {
-        String md5 = null;
-
-        if(input == null || salt == null) return null;
-
-        try {
-            String str = salt+input;
-            //Create MessageDigest object for MD5
-            MessageDigest digest = MessageDigest.getInstance("MD5");
-
-            //Update input string in message digest
-            digest.update(str.getBytes(), 0, str.length());
-
-            //Converts message digest value in base 16 (hex)
-            md5 = new BigInteger(1, digest.digest()).toString(16);
-
-        } catch (NoSuchAlgorithmException e) {
-            e.printStackTrace();
-        }
-        return md5;
+public class MD5HashTool extends AbstractSimpleHashTool{
+    public MD5HashTool() {
+        setInstanceCode("MD5");
     }
 }
diff --git a/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/SHA256HashTool.java b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/SHA256HashTool.java
new file mode 100644
index 00000000..02db548a
--- /dev/null
+++ b/Workspace/server/src/main/WEB-INF/classes/com/pqt/server/tools/security/SHA256HashTool.java
@@ -0,0 +1,7 @@
+package com.pqt.server.tools.security;
+
+public class SHA256HashTool extends AbstractSimpleHashTool {
+    public SHA256HashTool() {
+        setInstanceCode("SHA-256");
+    }
+}