/**
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements. See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership. The ASF licenses this file
    * to you 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 org.apache.wss4j.common.crypto;
  
  import java.util.HashSet;
  import java.util.Collections;
  import java.util.Set;
  
  /**
   * This class holds the permitted values for encryption/signature/etc. algorithms on the
   * inbound side. If the corresponding value is not null then the received algorithm must
   * match the appropriate algorithm stored in this class.
   */
  public class AlgorithmSuite {
  
      private Set<String> signatureMethods = Collections.emptySet();
      private Set<String> c14nAlgorithms = Collections.emptySet();
      private Set<String> digestAlgorithms = Collections.emptySet();
      private Set<String> transformAlgorithms = Collections.emptySet();
  
      private Set<String> encryptionMethods = Collections.emptySet();
      private Set<String> keyWrapAlgorithms = Collections.emptySet();
  
      private Set<String> derivedKeyAlgorithms = Collections.emptySet();
  
      private int maximumSymmetricKeyLength = 256;
      private int minimumSymmetricKeyLength = 128;
      private int maximumAsymmetricKeyLength = 4096;
      private int minimumAsymmetricKeyLength = 1024;
      private int maximumEllipticCurveKeyLength = 512;
      private int minimumEllipticCurveKeyLength = 160;
  
      private int signatureDerivedKeyLength;
      private int encryptionDerivedKeyLength;
  
      public void addSignatureMethod(String signatureMethod) {
          if (signatureMethods.isEmpty()) {
              signatureMethods = new HashSet<>();
          }
          signatureMethods.add(signatureMethod);
      }
  
      public Set<String> getSignatureMethods() {
          return signatureMethods;
      }
  
      public void addC14nAlgorithm(String c14nAlgorithm) {
          if (c14nAlgorithms.isEmpty()) {
              c14nAlgorithms = new HashSet<>();
          }
          c14nAlgorithms.add(c14nAlgorithm);
      }
  
      public Set<String> getC14nAlgorithms() {
          return c14nAlgorithms;
      }
  
      public void addDigestAlgorithm(String digestAlgorithm) {
          if (digestAlgorithms.isEmpty()) {
              digestAlgorithms = new HashSet<>();
          }
          digestAlgorithms.add(digestAlgorithm);
      }
  
      public Set<String> getDigestAlgorithms() {
          return digestAlgorithms;
      }
  
      public void addTransformAlgorithm(String transformAlgorithm) {
          if (transformAlgorithms.isEmpty()) {
              transformAlgorithms = new HashSet<>();
          }
          transformAlgorithms.add(transformAlgorithm);
      }
  
      public Set<String> getTransformAlgorithms() {
          return transformAlgorithms;
      }
  
      public void addEncryptionMethod(String encryptionMethod) {
          if (encryptionMethods.isEmpty()) {
              encryptionMethods = new HashSet<>();
         }
         encryptionMethods.add(encryptionMethod);
     }
 
     public Set<String> getEncryptionMethods() {
         return encryptionMethods;
     }
 
     public void addKeyWrapAlgorithm(String keyWrapAlgorithm) {
         if (keyWrapAlgorithms.isEmpty()) {
             keyWrapAlgorithms = new HashSet<>();
         }
         keyWrapAlgorithms.add(keyWrapAlgorithm);
     }
 
     public Set<String> getKeyWrapAlgorithms() {
         return keyWrapAlgorithms;
     }
 
     public void addDerivedKeyAlgorithm(String derivedKeyAlgorithm) {
         if (derivedKeyAlgorithms.isEmpty()) {
             derivedKeyAlgorithms = new HashSet<>();
         }
         derivedKeyAlgorithms.add(derivedKeyAlgorithm);
     }
 
     public Set<String> getDerivedKeyAlgorithms() {
         return derivedKeyAlgorithms;
     }
 
     public int getMaximumSymmetricKeyLength() {
         return maximumSymmetricKeyLength;
     }
 
     public void setMaximumSymmetricKeyLength(int maximumSymmetricKeyLength) {
         this.maximumSymmetricKeyLength = maximumSymmetricKeyLength;
     }
 
     public int getMinimumAsymmetricKeyLength() {
         return minimumAsymmetricKeyLength;
     }
 
     public void setMinimumAsymmetricKeyLength(int minimumAsymmetricKeyLength) {
         this.minimumAsymmetricKeyLength = minimumAsymmetricKeyLength;
     }
 
     public int getMaximumAsymmetricKeyLength() {
         return maximumAsymmetricKeyLength;
     }
 
     public void setMaximumAsymmetricKeyLength(int maximumAsymmetricKeyLength) {
         this.maximumAsymmetricKeyLength = maximumAsymmetricKeyLength;
     }
 
     public int getEncryptionDerivedKeyLength() {
         return encryptionDerivedKeyLength;
     }
 
     public void setEncryptionDerivedKeyLength(int encryptionDerivedKeyLength) {
         this.encryptionDerivedKeyLength = encryptionDerivedKeyLength;
     }
 
     public int getSignatureDerivedKeyLength() {
         return signatureDerivedKeyLength;
     }
 
     public void setSignatureDerivedKeyLength(int signatureDerivedKeyLength) {
         this.signatureDerivedKeyLength = signatureDerivedKeyLength;
     }
 
     public int getMinimumSymmetricKeyLength() {
         return minimumSymmetricKeyLength;
     }
 
     public void setMinimumSymmetricKeyLength(int minimumSymmetricKeyLength) {
         this.minimumSymmetricKeyLength = minimumSymmetricKeyLength;
     }
 
     public int getMaximumEllipticCurveKeyLength() {
         return maximumEllipticCurveKeyLength;
     }
 
     public void setMaximumEllipticCurveKeyLength(int maximumEllipticCurveKeyLength) {
         this.maximumEllipticCurveKeyLength = maximumEllipticCurveKeyLength;
     }
 
     public int getMinimumEllipticCurveKeyLength() {
         return minimumEllipticCurveKeyLength;
     }
 
     public void setMinimumEllipticCurveKeyLength(int minimumEllipticCurveKeyLength) {
         this.minimumEllipticCurveKeyLength = minimumEllipticCurveKeyLength;
     }
 
 }