russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
67 lines
2.5 KiB
Java
67 lines
2.5 KiB
Java
/*
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* Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8379433
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* @summary Test expected DecapsulateException thrown by Hybrid KEM implementation
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* @modules java.base/sun.security.ssl
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* @run main/othervm TestHybrid
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*/
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import java.security.KeyPair;
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import java.security.KeyPairGenerator;
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import java.security.Provider;
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import java.util.Arrays;
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import javax.crypto.DecapsulateException;
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import javax.crypto.KEM;
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public class TestHybrid {
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public static void main(String[] args) throws Exception {
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Class<?> clazz = Class.forName("sun.security.ssl.HybridProvider");
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Provider p = (Provider) clazz.getField("PROVIDER").get(null);
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String alg = "X25519MLKEM768";
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KeyPairGenerator kpg = KeyPairGenerator.getInstance(alg, p);
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KeyPair kp = kpg.generateKeyPair();
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KEM kem = KEM.getInstance(alg, p);
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KEM.Encapsulator e = kem.newEncapsulator(kp.getPublic());
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KEM.Decapsulator d = kem.newDecapsulator(kp.getPrivate());
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int secretSize = e.secretSize();
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KEM.Encapsulated enc = e.encapsulate();
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byte[] ciphertext = enc.encapsulation();
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byte[] badCiphertext = Arrays.copyOf(ciphertext,
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ciphertext.length - 1);
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try {
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d.decapsulate(badCiphertext, 0, secretSize, "Generic");
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throw new RuntimeException(
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"Expected DecapsulateException not thrown");
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} catch (DecapsulateException expected) {
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System.out.println("Expected DecapsulateException thrown");
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}
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}
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}
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