It very simple and this simplicity can be seen as an advantage or a disadvantage: in practice, just drag its icon (it’s an icon that appears on the desktop), any file or folder, and they will be encrypted immediately. Each file will now have the extension. DCU.
The original files can be maintained, or removed safely (via the program’s options). To open the encrypted files again we will need to unzip them again with DCU. To encrypt it again, you will need to repeat the procedure of the new drive icon, and so on.
If carried out often, this operation becomes boring, in which case it is preferable to a program (like TrueCrypt) to create an encrypted container, within which are the files you want to work often.
If you are looking for a program that can encrypt any file, to be used rarely, then DCU is fine, thanks to the excellent encryption algorithm (the Twofish).
Gpg4win is one of the best, if not the best free program for Windows (it is also open source, and can also be used for commercial purposes) be able to encrypt their email. And the program that most closely recalls Pgp Pro, which has long become a fee.
To protect the email using the classic system of the key pair, the public key (to be distributed to those who will read our emails) and private key are created through the program and verify digital signatures.
Gpg4win can be used in two ways: either using the programs contained in Gpg4win, making it able to work with any email client (in this case it will do some copy and paste the encrypted text in email client WinPT, a Gpg4win application in the package) or via plugin (for example there is a plugin for Outlook), in which case we will do everything within the mail client itself.
Using Gpg4win is not difficult, however, if you are not familiar with this matter (creation/use of public and private key, etc..), must read the program guide.
It’s a very simple program to send encrypted mail, a program that requires no installation. All you need is a password and a sender for the recipient. Through the inclusion of the two passwords (always before and after that of the sender to the recipient) you can view the text correctly (also works with a unique password, of course). Any odd man, who does not know the password for both users will not be able to decrypt the message. ClipSecure works well and is very fast (it supports all major encryption algorithms, 256-bit and beyond). Another point: Clipsecure needs no installation.
The use of the program is simple enough, but for the first few times you should read the guide (in English), otherwise you might not get anything. If you are looking for a program that encrypts the email with a classic pair of keys (public and private), then I suggest the valuable Gpg4win (but is a bit more complex ClipSecure).