Choose the filesystem type you’d like to use.So, be careful how big you make the volume file depending on how much space of your Dropbox account you’re willing to give up.

The file will appear this big at all times, even if you leave it empty.

Choose how big you’d like the make the encrypted volume.

Choose the encryption algorithm and hash algorithm you’d like.

It will appear as a single file once its created.

Choose where you want to save the encrypted volume.

Select “Create an encrypted file container”.

Once its finished installing, start TrueCrypt and click “Create Volume”.

Install TrueCrypt byextracting and running the shell script.

Download the TrueCrypt package from their website: TrueCrypt.

I will be covering its installation and use in Linux, but the method should be similar for Windows as well. I chose TrueCrypt because they have clients for Windows, Mac, and Linux. Then you can add, remove, or alter files as you want before unmounting it. With this method, the directory can be mounted as a drive anytime you’d like to use it. Using TrueCrypt, you can securely encrypt the directory with a password. Each time you need to edit or see files in the folder you’ll have to unzip it, and rezip it when you’re done. No one can open, see, or edit any of the files in the folder without knowing the password.

Now you have a password protected ZIP file of the folder.

Compress the folder as a ZIP file and set a password.

In Linux Mint, and most other Ubuntu derivatives and Windows, there should be an entry in the right-click menu to compress a file or folder such as this:.

The easiest method of password protecting a directory is to compress it as a ZIP file with a password. Method #1 – Simple password-protected folder compression These methods are based on protecting individual directories/folders, so they should work for any cloud storage solution such as Dropbox, Skydrive, Google Drive, SugarSync, etc. Here are a couple of the simplest methods to protect your sensitive data. However, you might have some sensitive data such as personal pictures or legal documents. No one will be trying to guess your password for your archive of gifs and lolcat pics. Let’s face it, most of the stuff you keep in Dropbox aren’t important.

Adding password to dropbox folder