TestApplet: add test for EC without W

test_applet/src/fr/anssi/smartpgp/TestApplet.java

@@ -141,14 +141,14 @@ public final class TestApplet extends Applet {
     }
 
     private final void processTestEc(final byte p1, final byte p2) {
-        boolean generate;
+        boolean generate, provide_w;
         short size;
         ECPrivateKey priv;
         ECPublicKey pub;
         byte[] field, a, b, g, r, s, w;
         short k;
 
-        switch(p1) {
+        switch(p1 & (byte)0x01) {
         case (byte)0x00:
             generate = false;
             break;
@@ -162,6 +162,20 @@ public final class TestApplet extends Applet {
             return;
         }
 
+        switch(p1 & (byte)0x10) {
+        case (byte)0x00:
+            provide_w = true;
+            break;
+
+        case (byte)0x10:
+            provide_w = false;
+            break;
+
+        default:
+            ISOException.throwIt(ISO7816.SW_WRONG_P1P2);
+            return;
+        }
+
         switch(p2) {
         case (byte)0x00:
             size = 256;
@@ -237,7 +251,9 @@ public final class TestApplet extends Applet {
             kp.genKeyPair();
         } else {
             priv.setS(s, (short)0, (short)s.length);
-            pub.setW(w, (short)0, (short)w.length);
+            if(provide_w) {
+                pub.setW(w, (short)0, (short)w.length);
+            }
         }
 
         if(!pub.isInitialized()) {