1 /*

     2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.security.util;

    27 

    28 import java.security.AlgorithmParameters;

    29 import java.security.CryptoPrimitive;

    30 import java.security.Key;

    31 import java.util.HashMap;

    32 import java.util.Map;

    33 import java.util.Set;

    34 import static sun.security.util.AbstractAlgorithmConstraints.getAlgorithms;

    35 

    36 /**

    37  * Algorithm constraints for legacy algorithms.

    38  */

    39 public class LegacyAlgorithmConstraints extends AbstractAlgorithmConstraints {

    40 

    41     // the known security property, jdk.tls.legacyAlgorithms

    42     public final static String PROPERTY_TLS_LEGACY_ALGS =

    43             "jdk.tls.legacyAlgorithms";

    44 

    45     private final static Map<String, String[]> legacyAlgorithmsMap =

    46                                                           new HashMap<>();

    47 

    48     private final String[] legacyAlgorithms;

    49 

    50     public LegacyAlgorithmConstraints(String propertyName,

    51             AlgorithmDecomposer decomposer) {

    52         super(decomposer);

    53         legacyAlgorithms = getAlgorithms(legacyAlgorithmsMap, propertyName);

    54     }

    55 

    56     @Override

    57     final public boolean permits(Set<CryptoPrimitive> primitives,

    58             String algorithm, AlgorithmParameters parameters) {

    59         return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);

    60     }

    61 

    62     @Override

    63     final public boolean permits(Set<CryptoPrimitive> primitives, Key key) {

    64         return true;

    65     }

    66 

    67     @Override

    68     final public boolean permits(Set<CryptoPrimitive> primitives,

    69             String algorithm, Key key, AlgorithmParameters parameters) {

    70         return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);

    71     }

    72 

    73 }