Doc to String to Doc

 EKRIP:

  
      long start=System.currentTimeMillis();
        String keyText=txtpassword.getText().toString();
        String txtsrc=txtnama.getText().toString();//SRC
        String txtdst=txtPath.getText().toString();//DST

        String fileName=txtsrc;
        cetak("Baca File ",fileName);
        cetak("Baca Posisi Encript ",txtdst);

        byte[]key=getByte2(keyText);
        Path path = null;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            path = Paths.get(fileName);
        }
        try {
            byte[] data = Files.readAllBytes(path);
            byte []ciper= encrypt(data, key);

            String NF=txtdst;
            saveByte(ciper,NF);
            sukses("Enkrip Berhasil","Path Simpan di:"+txtdst);

        } catch (IOException ex) {
            //Logger.getLogger(RC6.class.getName()).log(Level.SEVERE, null, ex);
        }
        long end=System.currentTimeMillis();
        String selisih=((end - start) / 1000.0) + " Milidetik";
        txtTime.setText(selisih);
  
  

SAVE:

   byte[] key = getByte2(keyText);
        Path path = null;
        path = Paths.get(TEMP);//txtsrc
    //    try {
            byte[] data = new byte[0];
            if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
                try {
                    data = Files.readAllBytes(path);
                    cetak("Baca Save0",data.toString());
                } catch (IOException ex) {
                    ex.printStackTrace();
                    cetak("Baca Save1","ERRS1:"+ex.toString());
                }
            }
            byte[] ciper = decrypt(data, key);

        try {
            cetak("Baca Save2","MAU SAVE KE :"+TEMP);
            saveByte2(ciper, TEMP,namafile,ext);//txtdst
        } catch (IOException ex) {
            ex.printStackTrace();
            cetak("Baca Save3","ERRS2:"+ex.toString());
        }




 private void saveByte2(byte[] dataDecrypt,String NF,String namafile,String ext) throws IOException {
        Path path = Paths.get(NF);
        Files.write(path, dataDecrypt); //creates, overwrites
        String NF2=NF.replaceAll("xxx",ext);
        NF2=NF2.replaceAll(".DT",namafile);

        File currentFile = new File(NF);
        File newFile = new File(NF2);

        if (rename(currentFile, newFile)) {
            //Success
            cetak("Baca Rename", "Success Rename "+NF+" TO "+NF2);
            cetak("Baca Hasil","File Berhasil di dekripsi ! lihat di : " + NF2);
            sukses("Dekrip Sukses !","Cek Di:"+NF2);
        } else {
            //Fail
            cetak("Baca Rename", "Fail Rename "+NF+" TO "+NF2);
            cetak("Baca Hasil","File Berhasil di dekripsi ! lihat di : " + NF);
            sukses("Dekrip Gagal !","Cek Di:"+NF);
        }
        
        
        
 
    byte []getByte(String plainText){
        byte[] output = plainText.getBytes(StandardCharsets.UTF_8);
        System.out.println("Text : " + plainText);
        String base64encoded = null;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            base64encoded = Base64.getEncoder().encodeToString(output);
        }
        System.out.println("Text [Base64] : " + base64encoded);
        return output;
    }

    String setString(byte[]output){
        String base64encoded = Base64.getEncoder().encodeToString(output);
        return base64encoded;
    }
    byte []getByte2(String plainText){
        byte[] bytes = plainText.getBytes(StandardCharsets.UTF_8);
        return bytes;
    }
    String setString2(byte[]output){
        String s = new String(output, StandardCharsets.UTF_8);
        return s;
    }