Add method that returns a standard keypair

acme4j-utils/src/main/java/org/shredzone/acme4j/util/KeyPairUtils.java

@@ -46,6 +46,19 @@ public class KeyPairUtils {
         // utility class without constructor
     }
 
+    /**
+     * Creates a new standard {@link KeyPair}.
+     * <p>
+     * This method can be used if no specific key type is required. It returns a
+     * "secp384r1" ECDSA key pair.
+     *
+     * @return Generated {@link KeyPair}
+     * @since 2.8
+     */
+    public static KeyPair createKeyPair() {
+        return createECKeyPair("secp384r1");
+    }
+
     /**
      * Creates a new RSA {@link KeyPair}.
      *

acme4j-utils/src/test/java/org/shredzone/acme4j/util/KeyPairUtilsTest.java

@@ -42,6 +42,19 @@ public class KeyPairUtilsTest {
         Security.addProvider(new BouncyCastleProvider());
     }
 
+    /**
+     * Test that standard keypair generates a secure key pair.
+     */
+    @Test
+    public void testCreateStandardKeyPair() {
+        KeyPair pair = KeyPairUtils.createKeyPair();
+        assertThat(pair, is(notNullValue()));
+        assertThat(pair.getPublic(), is(instanceOf(ECPublicKey.class)));
+        ECPublicKey pk = (ECPublicKey) pair.getPublic();
+        assertThat(pk.getAlgorithm(), is("ECDSA"));
+        assertThat(pk.getParams().getCurve().getField().getFieldSize(), is(384));
+    }
+
     /**
      * Test that RSA keypairs of the correct size are generated.
      */