| /* |
| * 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.sshd.common.config.keys; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.security.GeneralSecurityException; |
| import java.security.PublicKey; |
| import java.util.Map; |
| |
| import org.apache.sshd.common.session.SessionContext; |
| import org.apache.sshd.common.util.NumberUtils; |
| |
| /** |
| * @param <PUB> Generic {@link PublicKey} type |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public interface PublicKeyRawDataDecoder<PUB extends PublicKey> { |
| /** |
| * @param session The {@link SessionContext} for invoking this command - may be {@code null} if |
| * not invoked within a session context (e.g., offline tool or session unknown). |
| * @param keyType The {@code OpenSSH} reported key type |
| * @param keyData The key data bytes in {@code OpenSSH} format (after BASE64 decoding) - ignored |
| * if {@code null}/empty |
| * @param headers Any headers that may have been available when data was read |
| * @return The decoded {@link PublicKey} - or {@code null} if no data |
| * @throws IOException If failed to decode the key |
| * @throws GeneralSecurityException If failed to generate the key |
| */ |
| default PUB decodePublicKey( |
| SessionContext session, String keyType, byte[] keyData, Map<String, String> headers) |
| throws IOException, GeneralSecurityException { |
| return decodePublicKey(session, keyType, keyData, 0, NumberUtils.length(keyData), headers); |
| } |
| |
| default PUB decodePublicKey( |
| SessionContext session, String keyType, byte[] keyData, int offset, int length, Map<String, String> headers) |
| throws IOException, GeneralSecurityException { |
| if (length <= 0) { |
| return null; |
| } |
| |
| try (InputStream stream = new ByteArrayInputStream(keyData, offset, length)) { |
| return decodePublicKeyByType(session, keyType, stream, headers); |
| } |
| } |
| |
| PUB decodePublicKeyByType( |
| SessionContext session, String keyType, InputStream keyData, Map<String, String> headers) |
| throws IOException, GeneralSecurityException; |
| |
| /** |
| * @param session The {@link SessionContext} for invoking this command - may be {@code null} if |
| * not invoked within a session context (e.g., offline tool or session unknown). |
| * @param keyType The reported / encode key type |
| * @param keyData The key data bytes stream positioned after the key type decoding and making sure |
| * it is one of the supported types |
| * @param headers Any headers that may have been available when data was read |
| * @return The decoded {@link PublicKey} |
| * @throws IOException If failed to read from the data stream |
| * @throws GeneralSecurityException If failed to generate the key |
| */ |
| PUB decodePublicKey(SessionContext session, String keyType, InputStream keyData, Map<String, String> headers) |
| throws IOException, GeneralSecurityException; |
| } |