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Apache Commons VFS is a Virtual File System library.
There is a newer version: 2.9.0
/*
 * 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.commons.vfs2.provider.sftp;

import java.io.File;

/**
 * Structure for an identity.
 *
 * @since 2.1
 */
public class IdentityInfo {
    private final File privateKey;
    private final File publicKey;
    private final byte[] passPhrase;

    /**
     * Constructs an identity info with private key.
     * 
     * The key is not passphrase protected.
     * 

     * We use java.io.File because JSch cannot deal with VFS FileObjects.
     *
     * @param privateKey The file with the private key
     * @since 2.1
     */
    public IdentityInfo(final File privateKey) {
        this(privateKey, null, null);
    }

    /**
     * Constructs an identity info with private key and its passphrase.
     * 

     * We use java.io.File because JSch cannot deal with VFS FileObjects.
     *
     * @param privateKey The file with the private key
     * @param passPhrase The passphrase to decrypt the private key (can be {@code null} if no passphrase is used)
     * @since 2.1
     */
    public IdentityInfo(final File privateKey, final byte[] passPhrase) {
        this(privateKey, null, passPhrase);
    }

    /**
     * Constructs an identity info with private and public key and passphrase for the private key.
     * 
     * We use java.io.File because JSch cannot deal with VFS FileObjects.
     *
     * @param privateKey The file with the private key
     * @param publicKey The public key part used for connections with exchange of certificates (can be {@code null})
     * @param passPhrase The passphrase to decrypt the private key (can be {@code null} if no passphrase is used)
     * @since 2.1
     */
    public IdentityInfo(final File privateKey, final File publicKey, final byte[] passPhrase) {
        this.privateKey = privateKey;
        this.publicKey = publicKey;
        this.passPhrase = passPhrase;
    }

    /**
     * Get the file with the private key.
     *
     * @return the file
     * @since 2.1
     */
    public File getPrivateKey() {
        return privateKey;
    }

    /**
     * Get the file with the public key.
     *
     * @return the file
     * @since 2.1
     */
    public File getPublicKey() {
        return publicKey;
    }

    /**
     * Get the passphrase of the private key.
     *
     * @return the passphrase
     * @since 2.1
     */
    public byte[] getPassPhrase() {
        return passPhrase;
    }
}