commons-lib: add secure padding scheme, #TASK-7192

commons-lib/src/main/java/org/opencb/commons/utils/CryptoUtils.java

@@ -37,23 +37,23 @@ private CryptoUtils() {
 
     // Method to generate a new AES key
     public static SecretKey generateKey(int n) throws Exception {
-        KeyGenerator keyGenerator = KeyGenerator.getInstance("AES");
+        KeyGenerator keyGenerator = KeyGenerator.getInstance("AES/GCM/NoPadding");
         keyGenerator.init(n);
         SecretKey key = keyGenerator.generateKey();
         return key;
     }
 
     // Method to encrypt a string using a given key
     public static String encrypt(String strToEncrypt, SecretKey secretKey) throws Exception {
-        Cipher cipher = Cipher.getInstance("AES");
+        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
         cipher.init(Cipher.ENCRYPT_MODE, secretKey);
         byte[] encryptedBytes = cipher.doFinal(strToEncrypt.getBytes());
         return Base64.getEncoder().encodeToString(encryptedBytes);
     }
 
     // Method to decrypt a string using a given key
     public static String decrypt(String strToDecrypt, SecretKey secretKey) throws Exception {
-        Cipher cipher = Cipher.getInstance("AES");
+        Cipher cipher = Cipher.getInstance("AES/GCM/NoPadding");
         cipher.init(Cipher.DECRYPT_MODE, secretKey);
         byte[] decryptedBytes = cipher.doFinal(Base64.getDecoder().decode(strToDecrypt));
         return new String(decryptedBytes);