import java.io.IOException;

import java.security.NoSuchAlgorithmException;
import java.security.InvalidKeyException;

import javax.crypto.KeyGenerator;
import org.xmlpull.v1.XmlPullParserException;

import io.minio.MinioClient;
import io.minio.ServerSideEncryption;
import io.minio.errors.MinioException;

public class PutGetObjectEncryptedFile {
/**
 * MinioClient.putObject() and MinioClient.getObject() to a file example for  SSE_C.
 */
  public static void main(String[] args)
        throws NoSuchAlgorithmException, IOException, InvalidKeyException, XmlPullParserException {
    try {
        /* play.min.io for test and development. */
      MinioClient minioClient = new MinioClient("https://play.min.io:9000", "Q3AM3UQ867SPQQA43P2F",
                "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG");

      //* Amazon S3: */
      // MinioClient minioClient = new MinioClient("https://s3.amazonaws.com", "YOUR-ACCESSKEYID",
      //                                           "YOUR-SECRETACCESSKEY"); 

      String objectName = "my-objectname";
      String bucketName = "my-bucketname";
      String inputfile  = "my-inputfile";
      String outputfile = "my-outputfile";

      // Generate a new 256 bit AES key - This key must be remembered by the client.
      KeyGenerator keyGen = KeyGenerator.getInstance("AES");
      keyGen.init(256);

      // To test SSE-C
      ServerSideEncryption sse = ServerSideEncryption.withCustomerKey(keyGen.generateKey());
      minioClient.putObject(bucketName, objectName, sse, inputfile);
      System.out.println("my-objectname is encrypted and uploaded successfully.");

      minioClient.getObject(bucketName, objectName, sse, outputfile);
      System.out.println("Content of my-objectname saved to my-outputfile ");
    } catch (MinioException e) {
      System.out.println("Error occurred: " + e);
    }

  }
}