src/java.base/share/classes/sun/security/util/LegacyAlgorithmConstraints.java - master - githubmirror/jdk11u-dev

src/java.base/share/classes/sun/security/util/LegacyAlgorithmConstraints.java

68 строк2 KB

Evgeny Astigeevich

8268427: Improve AlgorithmConstraints:checkAlgorithm performance

07 авг 2021, 02:33

07 авг 2021, 02:334e32429

/*
 * Copyright (c) 2015, 2019, 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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.
 */

package sun.security.util;

import java.security.AlgorithmParameters;
import java.security.CryptoPrimitive;
import java.security.Key;
import java.util.List;
import java.util.Set;

/**
 * Algorithm constraints for legacy algorithms.
 */
public class LegacyAlgorithmConstraints extends AbstractAlgorithmConstraints {

    // the known security property, jdk.tls.legacyAlgorithms
    public static final String PROPERTY_TLS_LEGACY_ALGS =
            "jdk.tls.legacyAlgorithms";

    private final Set<String> legacyAlgorithms;

    public LegacyAlgorithmConstraints(String propertyName,
            AlgorithmDecomposer decomposer) {
        super(decomposer);
        legacyAlgorithms = getAlgorithms(propertyName);
    }

    @Override
    public final boolean permits(Set<CryptoPrimitive> primitives,
            String algorithm, AlgorithmParameters parameters) {
        return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);
    }

    @Override
    public final boolean permits(Set<CryptoPrimitive> primitives, Key key) {
        return true;
    }

    @Override
    public final boolean permits(Set<CryptoPrimitive> primitives,
            String algorithm, Key key, AlgorithmParameters parameters) {
        return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);
    }

}