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/*
 * Copyright (C) 2014 Square, 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.
 */
/*
 * Forked from OkHttp 2.7.0
 */
package io.grpc.okhttp.internal;

import java.io.UnsupportedEncodingException;
import okio.ByteString;

/** Factory for HTTP authorization credentials. */
public final class Credentials {
  private Credentials() {
  }

  /** Returns an auth credential for the Basic scheme. */
  @SuppressWarnings("StringCharset") // Changing old code doesn't fix any bugs and using
                                     // Charsets/StandardCharsets adds bloat
  public static String basic(String userName, String password) {
    try {
      String usernameAndPassword = userName + ":" + password;
      byte[] bytes = usernameAndPassword.getBytes("ISO-8859-1");
      String encoded = ByteString.of(bytes).base64();
      return "Basic " + encoded;
    } catch (UnsupportedEncodingException e) {
      throw new AssertionError();
    }
  }
}