0N/A/*
2362N/A * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
0N/A * published by the Free Software Foundation.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
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0N/A */
0N/A
0N/A/*
0N/A * @test
0N/A * @bug 4114896
0N/A * @summary Signature should support a sign() method that places the signature
0N/A * in an already existing array.
0N/A */
0N/A
0N/Aimport java.security.*;
0N/A
0N/Apublic class SignWithOutputBuffer {
0N/A
0N/A public static void main(String[] args) throws Exception {
0N/A
0N/A int numBytes;
0N/A
0N/A KeyPairGenerator kpGen = KeyPairGenerator.getInstance("DSA");
0N/A kpGen.initialize(512);
0N/A KeyPair kp = kpGen.genKeyPair();
0N/A
0N/A Signature sig = Signature.getInstance("DSS");
0N/A sig.initSign(kp.getPrivate());
0N/A sig.update((byte)0xff);
0N/A
0N/A // Allocate buffer for signature. According to BSAFE, the size of the
0N/A // signature may be as many as 48 bytes.
0N/A // First, let's allocate a buffer that's too short.
0N/A byte[] out = new byte[10];
0N/A try {
0N/A numBytes = sig.sign(out, 0, out.length);
0N/A } catch (SignatureException e) {
0N/A System.out.println(e);
0N/A }
0N/A
0N/A // Now repeat the same with a buffer that's big enough
0N/A sig = Signature.getInstance("DSS");
0N/A sig.initSign(kp.getPrivate());
0N/A sig.update((byte)0xff);
0N/A out = new byte[48];
0N/A numBytes = sig.sign(out, 0, out.length);
0N/A
0N/A System.out.println("Signature len="+numBytes);
0N/A }
0N/A}