jdk/test/sun/security/rsa/TestKeyPairGeneratorLength.java
changeset 2 90ce3da70b43
child 5506 202f599c92aa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/sun/security/rsa/TestKeyPairGeneratorLength.java	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,56 @@
+/*
+ * Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/**
+ * @test
+ * @bug     5078280
+ * @summary make sure generated key pairs are exactly the requested length
+ * @author  Andreas Sterbenz
+ */
+
+import java.security.*;
+import java.security.interfaces.*;
+
+public class TestKeyPairGeneratorLength {
+
+    public static void main(String[] args) throws Exception {
+        test(512);
+        test(513);
+        System.out.println("Done.");
+    }
+
+    private static void test(int len) throws Exception {
+        KeyPairGenerator kpg = KeyPairGenerator.getInstance("RSA", "SunRsaSign");
+        kpg.initialize(len);
+        for (int i = 0; i < 6; i++) {
+            System.out.println("Generating keypair " + len + " bit keypair " + (i + 1) + "...");
+            KeyPair kp = kpg.generateKeyPair();
+            RSAPublicKey key = (RSAPublicKey)kp.getPublic();
+            int k = key.getModulus().bitLength();
+            if (k != len) {
+                throw new Exception("length mismatch: " + k);
+            }
+        }
+    }
+
+}