48 lines
1.9 KiB
Java
48 lines
1.9 KiB
Java
/*
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* Copyright (c) 2023, 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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import java.security.KeyPairGenerator;
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import java.security.PublicKey;
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/*
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* @test
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* @bug 8308808
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* @requires os.family == "windows"
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* @modules jdk.crypto.mscapi
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* @run main EncodingMutability
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*/
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public class EncodingMutability {
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public static void main(String[] args) throws Exception {
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KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA", "SunMSCAPI");
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PublicKey publicKey = keyGen.generateKeyPair().getPublic();
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byte initialByte = publicKey.getEncoded()[0];
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publicKey.getEncoded()[0] = 0;
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byte mutatedByte = publicKey.getEncoded()[0];
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if (initialByte != mutatedByte) {
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System.out.println("Was able to mutate first byte of pubkey from " + initialByte + " to " + mutatedByte);
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throw new RuntimeException("Pubkey was mutated via getEncoded");
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}
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}
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} |