Tests: handle ECC curves unsupported by SP math in KeyPairGenerator tests

Author: cconlon

src/test/java/com/wolfssl/provider/jce/test/WolfCryptKeyPairGeneratorTest.java

@@ -183,6 +183,23 @@ public static void testProviderInstallationAtRuntime() {
             int size = Ecc.getCurveSizeFromName(curves[i].toUpperCase());
 
             if (size > 0) {
+
+                /* Verify curve supports key generation. */
+                try {
+                    KeyPairGenerator testKpg =
+                        KeyPairGenerator.getInstance("EC", "wolfJCE");
+                    ECGenParameterSpec testSpec =
+                        new ECGenParameterSpec(curves[i]);
+                    testKpg.initialize(testSpec);
+                    KeyPair testKp = testKpg.generateKeyPair();
+                    if (testKp == null) {
+                        continue;
+                    }
+                } catch (Exception e) {
+                    /* Curve not usable for keygen, skip */
+                    continue;
+                }
+
                 enabledCurves.add(curves[i]);
 
                 if (!enabledEccKeySizes.contains(Integer.valueOf(size))) {
@@ -1174,7 +1191,9 @@ public void testECValidKeySizesMapToNISTCurves()
 
                 if (wce != null) {
                     String msg = wce.getMessage();
-                    if (msg != null && msg.contains("Bad function argument")) {
+                    if (msg != null &&
+                        (msg.contains("Bad function argument") ||
+                         msg.contains("Key size error"))) {
                         /* Expected for non-FIPS-approved curves */
                         continue;
                     }