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Java library for Javascript Object Signing and Encryption (JOSE) and JSON Web Tokens (JWT)

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/*
 * nimbus-jose-jwt
 *
 * Copyright 2012-2016, Connect2id Ltd and contributors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the
 * License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */

package com.nimbusds.jose.jwk;


import java.util.*;


/**
 * JWK {@code use} and {@code key_ops} consistency rules.
 *
 * 

See https://tools.ietf.org/html/rfc7517#section-4.3 * * @author Vladimir Dzhuvinov * @version 2021-07-13 */ class KeyUseAndOpsConsistency { /** * Defines the consistent key use / key operations mappings. */ static final Map> MAP; static { Map> map = new HashMap<>(); map.put( KeyUse.SIGNATURE, new HashSet<>(Arrays.asList( KeyOperation.SIGN, KeyOperation.VERIFY))); map.put( KeyUse.ENCRYPTION, new HashSet<>(Arrays.asList( KeyOperation.ENCRYPT, KeyOperation.DECRYPT, KeyOperation.WRAP_KEY, KeyOperation.UNWRAP_KEY ))); MAP = Collections.unmodifiableMap(map); } /** * Checks if the specified key use and key operations are consistent. * Note, a key use with a non-standard value other than * {@link KeyUse#SIGNATURE "sig"} and {@link KeyUse#ENCRYPTION "enc"} * is always assumed to be consistent with a specified key operations * set. * * @param use The key use. May be {@code null}. * @param ops The key operations. May be {@code null}. * * @return {@code true} if consistent, else {@code false}. */ static boolean areConsistent(final KeyUse use, final Set ops) { if (use == null || ops == null) { return true; } return !MAP.containsKey(use) || MAP.get(use).containsAll(ops); } }





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