-keep public class com.example.** {
*;
}
proguard @proguard.cfg
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
public class Encryptor {
private static final String ALGORITHM = "AES";
private static final String KEY = "mySecretKey123456";
public static void encrypt(File inputFile, File outputFile) throws Exception {
FileInputStream inputStream = new FileInputStream(inputFile);
FileOutputStream outputStream = new FileOutputStream(outputFile);
byte[] inputBytes = new byte[(int) inputFile.length()];
inputStream.read(inputBytes);
SecretKeySpec keySpec = new SecretKeySpec(KEY.getBytes(), ALGORITHM);
Cipher cipher = Cipher.getInstance(ALGORITHM);
cipher.init(Cipher.ENCRYPT_MODE, keySpec);
byte[] outputBytes = cipher.doFinal(inputBytes);
outputStream.write(outputBytes);
inputStream.close();
outputStream.close();
}
public static void main(String[] args) throws Exception {
encrypt(inputFile, outputFile);
}
}
