fixed exposure of constructor.

Author: dghgit

core/src/main/java/org/bouncycastle/pqc/crypto/falcon/FalconParameters.java

@@ -5,15 +5,14 @@
 public class FalconParameters
     implements CipherParameters
 {
-
     public static final FalconParameters falcon_512 = new FalconParameters("falcon-512", 9, 40);
     public static final FalconParameters falcon_1024 = new FalconParameters("falcon-1024", 10, 40);
 
     private final String name;
     private final int logn;
     private final int nonce_length;
 
-    public FalconParameters(String name, int logn, int nonce_length)
+    private FalconParameters(String name, int logn, int nonce_length)
     {
         assert logn > 0 && logn <= 10 : "Log N degree should be between 1 and 10";
         this.name = name;
@@ -26,7 +25,7 @@ public int getLogN()
         return logn;
     }
 
-    public int getNonceLength()
+    int getNonceLength()
     {
         return nonce_length;
     }