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import java.io.File;
import java.io.FileInputStream;
import java.io.ObjectInputStream;
import javax.crypto.Cipher;
import javax.crypto.SealedObject;
import javax.crypto.SecretKey;
public class Main {
private static Object readFromFile(String filename) throws Exception {
ObjectInputStream ois = new ObjectInputStream(new FileInputStream(new File(filename)));
Object object = ois.readObject();
ois.close();
return object;
}
public static void main(String[] args) throws Exception {
SecretKey key = (SecretKey) readFromFile("secretkey.dat");
SealedObject sealedObject = (SealedObject) readFromFile("sealed.dat");
String algorithmName = sealedObject.getAlgorithm();
Cipher cipher = Cipher.getInstance(algorithmName);
cipher.init(Cipher.DECRYPT_MODE, key);
String text = (String) sealedObject.getObject(cipher);
System.out.println("Text = " + text);
}
}
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