| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @bug 8149802 |
| * @summary Ensure that Signature objects are reset after verification errored out. |
| */ |
| import java.util.Arrays; |
| import java.security.*; |
| |
| public class ResetAfterException { |
| |
| public static void main(String[] args) throws Exception { |
| |
| byte[] data = "data to be signed".getBytes(); |
| byte[] shortBuffer = new byte[2]; |
| |
| Provider[] provs = Security.getProviders(); |
| boolean failed = false; |
| |
| for (Provider p : provs) { |
| Signature sig; |
| try { |
| sig = Signature.getInstance("SHA256withRSA", p); |
| } catch (NoSuchAlgorithmException nsae) { |
| // no support, skip |
| continue; |
| } |
| |
| boolean res = true; |
| System.out.println("Testing Provider: " + p.getName()); |
| KeyPairGenerator keyGen = null; |
| try { |
| // It's possible that some provider, e.g. SunMSCAPI, |
| // doesn't work well with keys from other providers |
| // so we use the same provider to generate key first |
| keyGen = KeyPairGenerator.getInstance("RSA", p); |
| } catch (NoSuchAlgorithmException nsae) { |
| keyGen = KeyPairGenerator.getInstance("RSA"); |
| } |
| if (keyGen == null) { |
| throw new RuntimeException("Error: No support for RSA KeyPairGenerator"); |
| } |
| keyGen.initialize(1024); |
| KeyPair keyPair = keyGen.generateKeyPair(); |
| |
| sig.initSign(keyPair.getPrivate()); |
| sig.update(data); |
| byte[] signature = sig.sign(); |
| // First check signing |
| try { |
| sig.update(data); |
| // sign with short output buffer to cause exception |
| int len = sig.sign(shortBuffer, 0, shortBuffer.length); |
| System.out.println("FAIL: Should throw SE with short buffer"); |
| res = false; |
| } catch (SignatureException e) { |
| // expected exception; ignore |
| System.out.println("Expected Ex for short output buffer: " + e); |
| } |
| // Signature object should reset after a failed generation |
| sig.update(data); |
| byte[] signature2 = sig.sign(); |
| if (!Arrays.equals(signature, signature2)) { |
| System.out.println("FAIL: Generated different signature"); |
| res = false; |
| } else { |
| System.out.println("Generated same signature"); |
| } |
| |
| // Now, check signature verification |
| sig.initVerify(keyPair.getPublic()); |
| sig.update(data); |
| try { |
| // first verify with valid signature bytes |
| res = sig.verify(signature); |
| } catch (SignatureException e) { |
| System.out.println("FAIL: Valid signature rejected"); |
| e.printStackTrace(); |
| res = false; |
| } |
| |
| try { |
| sig.update(data); |
| // verify with short signaure to cause exception |
| if (sig.verify(shortBuffer)) { |
| System.out.println("FAIL: Invalid signature verified"); |
| res = false; |
| } else { |
| System.out.println("Invalid signature rejected"); |
| } |
| } catch (SignatureException e) { |
| // expected exception; ignore |
| System.out.println("Expected Ex for short output buffer: " + e); |
| } |
| // Signature object should reset after an a failed verification |
| sig.update(data); |
| try { |
| // verify with valid signature bytes again |
| res = sig.verify(signature); |
| if (!res) { |
| System.out.println("FAIL: Valid signature is rejected"); |
| } else { |
| System.out.println("Valid signature is accepted"); |
| } |
| } catch (GeneralSecurityException e) { |
| System.out.println("FAIL: Valid signature is rejected"); |
| e.printStackTrace(); |
| res = false; |
| } |
| failed |= !res; |
| } |
| if (failed) { |
| throw new RuntimeException("One or more test failed"); |
| } else { |
| System.out.println("Test Passed"); |
| } |
| } |
| } |