org.apache.sshd.common.config.keys.PublicKeyEntryDataResolver Maven / Gradle / Ivy
/*
* 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.util.Base64;
import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.common.util.NumberUtils;
/**
* TODO Add javadoc
*
* @author Apache MINA SSHD Project
*/
public interface PublicKeyEntryDataResolver {
PublicKeyEntryDataResolver DEFAULT = new PublicKeyEntryDataResolver() {
@Override
public String toString() {
return "DEFAULT";
}
};
/**
* Decodes the public key entry data bytes from their string representation - by default it assume {@link Base64}
* encoding.
*
* @param encData The encoded data - ignored if {@code null}/empty
* @return The decoded data bytes
*/
default byte[] decodeEntryKeyData(String encData) {
if (GenericUtils.isEmpty(encData)) {
return GenericUtils.EMPTY_BYTE_ARRAY;
}
Base64.Decoder decoder = Base64.getDecoder();
return decoder.decode(encData);
}
/**
* Encodes the public key entry data bytes into their string representation - by default it assume {@link Base64}
* encoding.
*
* @param keyData The key data bytes - ignored if {@code null}/empty
* @return The encoded data bytes
*/
default String encodeEntryKeyData(byte[] keyData) {
if (NumberUtils.isEmpty(keyData)) {
return "";
}
Base64.Encoder encoder = Base64.getEncoder();
return encoder.encodeToString(keyData);
}
}