1 /*
   2  * Copyright (c) 2015, 2019, 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.List;
  32 import java.util.Set;
  33 
  34 /**
  35  * Algorithm constraints for legacy algorithms.
  36  */
  37 public class LegacyAlgorithmConstraints extends AbstractAlgorithmConstraints {
  38 
  39     // the known security property, jdk.tls.legacyAlgorithms
  40     public final static String PROPERTY_TLS_LEGACY_ALGS =
  41             "jdk.tls.legacyAlgorithms";
  42 
  43     private final List<String> legacyAlgorithms;
  44 
  45     public LegacyAlgorithmConstraints(String propertyName,
  46             AlgorithmDecomposer decomposer) {
  47         super(decomposer);
  48         legacyAlgorithms = getAlgorithms(propertyName);
  49     }
  50 
  51     @Override
  52     final public boolean permits(Set<CryptoPrimitive> primitives,
  53             String algorithm, AlgorithmParameters parameters) {
  54         return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);
  55     }
  56 
  57     @Override
  58     final public boolean permits(Set<CryptoPrimitive> primitives, Key key) {
  59         return true;
  60     }
  61 
  62     @Override
  63     final public boolean permits(Set<CryptoPrimitive> primitives,
  64             String algorithm, Key key, AlgorithmParameters parameters) {
  65         return checkAlgorithm(legacyAlgorithms, algorithm, decomposer);
  66     }
  67 
  68 }