| /* |
| * 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.tuweni.io; |
| |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.tuweni.bytes.Bytes; |
| |
| /** |
| * Utility methods for encoding and decoding base64 strings. |
| */ |
| public final class Base64 { |
| private Base64() {} |
| |
| /** |
| * Encode a byte array to a base64 encoded string. |
| * |
| * @param bytes The bytes to encode. |
| * @return A base64 encoded string. |
| */ |
| public static String encodeBytes(byte[] bytes) { |
| requireNonNull(bytes); |
| return new String(java.util.Base64.getEncoder().encode(bytes), UTF_8); |
| } |
| |
| /** |
| * Encode bytes to a base64 encoded string. |
| * |
| * @param bytes The bytes to encode. |
| * @return A base64 encoded string. |
| */ |
| public static String encode(Bytes bytes) { |
| requireNonNull(bytes); |
| return encodeBytes(bytes.toArrayUnsafe()); |
| } |
| |
| /** |
| * Decode a base64 encoded string to a byte array. |
| * |
| * @param b64 The base64 encoded string. |
| * @return A byte array. |
| */ |
| public static byte[] decodeBytes(String b64) { |
| requireNonNull(b64); |
| return java.util.Base64.getDecoder().decode(b64.getBytes(UTF_8)); |
| } |
| |
| /** |
| * Decode a base64 encoded string to bytes. |
| * |
| * @param b64 The base64 encoded string. |
| * @return The decoded bytes. |
| */ |
| public static Bytes decode(String b64) { |
| return Bytes.wrap(decodeBytes(b64)); |
| } |
| } |