/*
 * Copyright 2014 Red Hat, Inc.
 *
 * Red Hat 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 io.vertx.reactivex.ext.auth.jdbc;

import java.util.Map;
import io.reactivex.Observable;
import io.reactivex.Flowable;
import io.reactivex.Single;
import io.reactivex.Completable;
import io.reactivex.Maybe;
import io.vertx.core.json.JsonArray;

Determines how the hashing is computed in the implementation
You can implement this to provide a different hashing strategy to the default.
 NOTE: This class has been automatically generated from the original non RX-ified interface using Vert.x codegen. /**
 * Determines how the hashing is computed in the implementation
 *
 * You can implement this to provide a different hashing strategy to the default.
 *
 * <p/>
 * NOTE: This class has been automatically generated from the {@link io.vertx.ext.auth.jdbc.JDBCHashStrategy original} non RX-ified interface using Vert.x codegen.
 */

@io.vertx.lang.rx.RxGen(io.vertx.ext.auth.jdbc.JDBCHashStrategy.class)
public class JDBCHashStrategy {

  @Override
  public String toString() {
    return delegate.toString();
  }

  @Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    JDBCHashStrategy that = (JDBCHashStrategy) o;
    return delegate.equals(that.delegate);
  }
  
  @Override
  public int hashCode() {
    return delegate.hashCode();
  }

  public static final io.vertx.lang.rx.TypeArg<JDBCHashStrategy> __TYPE_ARG = new io.vertx.lang.rx.TypeArg<>(    obj -> new JDBCHashStrategy((io.vertx.ext.auth.jdbc.JDBCHashStrategy) obj),
    JDBCHashStrategy::getDelegate
  );

  private final io.vertx.ext.auth.jdbc.JDBCHashStrategy delegate;
  
  public JDBCHashStrategy(io.vertx.ext.auth.jdbc.JDBCHashStrategy delegate) {
    this.delegate = delegate;
  }

  public io.vertx.ext.auth.jdbc.JDBCHashStrategy getDelegate() {
    return delegate;
  }

  
This is the current backwards compatible hashing implementation, new applications should prefer the
PBKDF2 implementation, unless the tradeoff between security and CPU usage is an option.
Params:
vertx – the vert.x instance
Returns:
the implementation./**
   * This is the current backwards compatible hashing implementation, new applications should prefer the
   * PBKDF2 implementation, unless the tradeoff between security and CPU usage is an option.
   * @param vertx the vert.x instance
   * @return the implementation.
   */
  public static io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy createSHA512(io.vertx.reactivex.core.Vertx vertx) { 
    io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy ret = io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy.newInstance(io.vertx.ext.auth.jdbc.JDBCHashStrategy.createSHA512(vertx.getDelegate()));
    return ret;
  }

  
Implements a Hashing Strategy as per https://www.owasp.org/index.php/Password_Storage_Cheat_Sheet (2018-01-17).
New deployments should use this strategy instead of the default one (which was the previous OWASP recommendation).
The work factor can be updated by using the nonces json array.
Params:
vertx – the vert.x instance
Returns:
the implementation./**
   * Implements a Hashing Strategy as per https://www.owasp.org/index.php/Password_Storage_Cheat_Sheet (2018-01-17).
   *
   * New deployments should use this strategy instead of the default one (which was the previous OWASP recommendation).
   *
   * The work factor can be updated by using the nonces json array.
   * @param vertx the vert.x instance
   * @return the implementation.
   */
  public static io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy createPBKDF2(io.vertx.reactivex.core.Vertx vertx) { 
    io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy ret = io.vertx.reactivex.ext.auth.jdbc.JDBCHashStrategy.newInstance(io.vertx.ext.auth.jdbc.JDBCHashStrategy.createPBKDF2(vertx.getDelegate()));
    return ret;
  }

  
Compute a random salt.
Returns:
a non null salt value/**
   * Compute a random salt.
   * @return a non null salt value
   */
  public String generateSalt() { 
    String ret = delegate.generateSalt();
    return ret;
  }

  
Compute the hashed password given the unhashed password and the salt
Params:
password – the unhashed password
salt – the salt
version – the nonce version to use
Returns:
the hashed password/**
   * Compute the hashed password given the unhashed password and the salt
   * @param password the unhashed password
   * @param salt the salt
   * @param version the nonce version to use
   * @return the hashed password
   */
  public String computeHash(String password, String salt, int version) { 
    String ret = delegate.computeHash(password, salt, version);
    return ret;
  }

  
Retrieve the hashed password from the result of the authentication query
Params:
row – the row
Returns:
the hashed password/**
   * Retrieve the hashed password from the result of the authentication query
   * @param row the row
   * @return the hashed password
   */
  public String getHashedStoredPwd(JsonArray row) { 
    String ret = delegate.getHashedStoredPwd(row);
    return ret;
  }

  
Retrieve the salt from the result of the authentication query
Params:
row – the row
Returns:
the salt/**
   * Retrieve the salt from the result of the authentication query
   * @param row the row
   * @return the salt
   */
  public String getSalt(JsonArray row) { 
    String ret = delegate.getSalt(row);
    return ret;
  }

  
Sets a ordered list of nonces where each position corresponds to a version.
The nonces are supposed not to be stored in the underlying jdbc storage but to
be provided as a application configuration. The idea is to add one extra variable
to the hash function in order to make breaking the passwords using rainbow tables
or precomputed hashes harder. Leaving the attacker only with the brute force
approach.
Nonces are dependent on the implementation. E.g.: for the SHA512 they are extra salt
used during the hashing, for the PBKDF2 they map the number of iterations the algorithm
should take
Params:
nonces – a json array./**
   * Sets a ordered list of nonces where each position corresponds to a version.
   *
   * The nonces are supposed not to be stored in the underlying jdbc storage but to
   * be provided as a application configuration. The idea is to add one extra variable
   * to the hash function in order to make breaking the passwords using rainbow tables
   * or precomputed hashes harder. Leaving the attacker only with the brute force
   * approach.
   *
   * Nonces are dependent on the implementation. E.g.: for the SHA512 they are extra salt
   * used during the hashing, for the PBKDF2 they map the number of iterations the algorithm
   * should take
   * @param nonces a json array.
   */
  public void setNonces(JsonArray nonces) { 
    delegate.setNonces(nonces);
  }

  
Time constant string comparision to avoid timming attacks.
Params:
hasha – hash a to compare
hashb – hash b to compare
Returns:
true if equal/**
   * Time constant string comparision to avoid timming attacks.
   * @param hasha hash a to compare
   * @param hashb hash b to compare
   * @return true if equal
   */
  public static boolean isEqual(String hasha, String hashb) { 
    boolean ret = io.vertx.ext.auth.jdbc.JDBCHashStrategy.isEqual(hasha, hashb);
    return ret;
  }


  public static  JDBCHashStrategy newInstance(io.vertx.ext.auth.jdbc.JDBCHashStrategy arg) {
    return arg != null ? new JDBCHashStrategy(arg) : null;
  }
}