com.google.firebase.auth.hash.StandardScrypt Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of firebase-admin Show documentation

This is the official Firebase Admin Java SDK. Build extraordinary native JVM apps in minutes with Firebase. The Firebase platform can power your app’s backend, user authentication, static hosting, and more.

There is a newer version: 9.4.1

Show newest version

/*
 * Copyright 2018 Google Inc.
 *
 * 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.google.firebase.auth.hash;

import com.google.common.collect.ImmutableMap;
import com.google.firebase.auth.UserImportHash;
import java.util.Map;

/**
 * Represents the Standard Scrypt password hashing algorithm. Can be used as an instance of
 * {@link com.google.firebase.auth.UserImportHash} when importing users.
 */
public class StandardScrypt extends UserImportHash {

  private final int derivedKeyLength;
  private final int blockSize;
  private final int parallelization;
  private final int memoryCost;

  private StandardScrypt(Builder builder) {
    super("STANDARD_SCRYPT");
    this.derivedKeyLength = builder.derivedKeyLength;
    this.blockSize = builder.blockSize;
    this.parallelization = builder.parallelization;
    this.memoryCost = builder.memoryCost;
  }

  @Override
  protected Map getOptions() {
    return ImmutableMap.of(
        "dkLen", derivedKeyLength,
        "blockSize", blockSize,
        "parallelization", parallelization,
        "memoryCost", memoryCost
    );
  }

  public static Builder builder() {
    return new Builder();
  }

  public static class Builder {

    private int derivedKeyLength;
    private int blockSize;
    private int parallelization;
    private int memoryCost;

    private Builder() {}

    public Builder setDerivedKeyLength(int derivedKeyLength) {
      this.derivedKeyLength = derivedKeyLength;
      return this;
    }

    public Builder setBlockSize(int blockSize) {
      this.blockSize = blockSize;
      return this;
    }

    public Builder setParallelization(int parallelization) {
      this.parallelization = parallelization;
      return this;
    }

    public Builder setMemoryCost(int memoryCost) {
      this.memoryCost = memoryCost;
      return this;
    }

    public StandardScrypt build() {
      return new StandardScrypt(this);
    }
  }
}