urity.sdk.crypto-samples.4.4.0-alpha.source-code.FileEncryption Maven / Gradle / Ivy
import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import com.virgilsecurity.sdk.crypto.Crypto;
import com.virgilsecurity.sdk.crypto.KeyPair;
import com.virgilsecurity.sdk.crypto.PrivateKey;
import com.virgilsecurity.sdk.crypto.PublicKey;
import com.virgilsecurity.sdk.crypto.VirgilCrypto;
/*
* Copyright (c) 2016, Virgil Security, Inc.
*
* All rights reserved.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of virgil nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* This example shows how to encrypt file with public key and decrypt it back.
*
* @author Andrii Iakovenko
*
*/
public class FileEncryption {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Enter path to file: ");
String fileName = br.readLine();
System.out.println();
// Initialize Crypto
Crypto crypto = new VirgilCrypto();
// Generate generate public/private key pair for key recipient
KeyPair keyPair = crypto.generateKeys();
PublicKey publicKey = keyPair.getPublicKey();
PrivateKey privateKey = keyPair.getPrivateKey();
// Encode file
String encodedFileName = fileName + ".encoded";
System.out.println("Encoding file");
try (InputStream in = new FileInputStream(fileName); OutputStream out = new FileOutputStream(encodedFileName)) {
crypto.encrypt(in, out, new PublicKey[] { publicKey });
}
// Decode file
String decodedFileName = fileName + ".decoded";
System.out.println("Decoding file");
try (InputStream in = new FileInputStream(encodedFileName);
OutputStream out = new FileOutputStream(decodedFileName)) {
crypto.decrypt(in, out, privateKey);
}
System.out.println("Done");
}
}