fix: Use of a cryptographic algorithm with insufficient key size

Author: SummerBootFramework

src/main/java/org/summerboot/jexpress/security/EncryptorUtil.java

@@ -485,6 +485,7 @@ public static KeyPair generateKeyPairEC() throws NoSuchAlgorithmException, Inval
     public static KeyPair generateKeyPair(String keyfactoryAlgorithm, int size) throws NoSuchAlgorithmException, InvalidKeySpecException, InvalidAlgorithmParameterException, NoSuchProviderException {
         if (keyfactoryAlgorithm == null) {
             keyfactoryAlgorithm = "EC";
+            size = 256; // default to EC with 256 bits
         }
         keyfactoryAlgorithm = keyfactoryAlgorithm.toUpperCase();
         KeyPairGenerator kpg;