| // Copyright 2017 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.crypto.tink; |
| |
| import com.google.crypto.tink.proto.EncryptedKeyset; |
| import com.google.crypto.tink.proto.Keyset; |
| import java.io.ByteArrayInputStream; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * A {@link KeysetReader} that can read from some source cleartext or encrypted keysets in <a |
| * href="https://developers.google.com/protocol-buffers/docs/encoding">proto binary wire format</a>. |
| * |
| * @since 1.0.0 |
| */ |
| public final class BinaryKeysetReader implements KeysetReader { |
| private final InputStream inputStream; |
| |
| /** |
| * Static method to create a BinaryKeysetReader from an {@link InputStream}. |
| * |
| * <p>Note: the input stream won't be read until {@link BinaryKeysetReader#read} or {@link |
| * BinaryKeysetReader#readEncrypted} is called. |
| */ |
| public static KeysetReader withInputStream(InputStream stream) { |
| return new BinaryKeysetReader(stream); |
| } |
| |
| /** Static method to create a BinaryKeysetReader from a byte arrary. */ |
| public static KeysetReader withBytes(final byte[] bytes) { |
| return new BinaryKeysetReader(new ByteArrayInputStream(bytes)); |
| } |
| |
| /** |
| * Static method to create a BinaryKeysetReader from a file. |
| * |
| * <p>Note: the input file won't be read until {@link BinaryKeysetReader#read} or {@link |
| * BinaryKeysetReader#readEncrypted} is called. |
| */ |
| public static KeysetReader withFile(File file) throws IOException { |
| return new BinaryKeysetReader(new FileInputStream(file)); |
| } |
| |
| private BinaryKeysetReader(InputStream stream) { |
| inputStream = stream; |
| } |
| |
| @Override |
| public Keyset read() throws IOException { |
| return Keyset.parseFrom(inputStream); |
| } |
| |
| @Override |
| public EncryptedKeyset readEncrypted() throws IOException { |
| return EncryptedKeyset.parseFrom(inputStream); |
| } |
| } |