Using OpenPGP mode to encrypt and decrypt files for transfer (WS_FTP Professional)

OpenPGP Mode allows you to encrypt files that you transfer by using OpenPGP keys. Encrypting a file with OpenPGP ensures that only people who have the appropriate key can decrypt the file. When OpenPGP mode is enabled for a remote site, encryption works as follows:

• When you upload a file to the site, if the file is not already encrypted, the file will be encrypted, then transferred. This is true whether the site is a local view or a remote site.
• When you download an encrypted file (a file with a .pgp extension) from a remote site, if you have the appropriate private key, the file will be transferred, then decrypted. The decrytped file will have the ".pgp" extension removed. For example, if the encrypted file was named spreadsheet.xls.pgp, then the decrytped file will be spreadsheet.xls.
• When you download an encrypted file from a local site, a local to local transfer, the encrypted file is transferred as is; it is not automatically decrypted.

Turning on OpenPGP Mode

OpenPGP Mode can be enabled for any remote server connection.

1. Connect to a remote server.
2. Select the remote server's tab.
3. Select Tools > OpenPGP Mode, or click OpenPGP Mode on the toolbar. The OpenPGP Mode dialog appears.
4. Select the OpenPGP Transfer method you would prefer to use from the options listed:
   • Encrypt the files using a key from your keyring.  Select the Encryption keys to use to encrypt the files.
   • Sign the files using your private key as the digital signature.  Select the Signing key to use to sign the files.  Enter the Passphrase of signing key.  
   • Select Encrypt and Sign to use both options together.
5. Click OK. OpenPGP Mode is now enabled for the duration of the connection or until it is disabled.
6. Upload or download files. When you upload a file, it will ask you to choose the OpenPGP key pair to use.

   Your key pairs, those that you have either generated or imported, are shown in Program Options > OpenPGP > Key Pairs.

   The uploaded, OpenPGP encrypted files will have the file extension: .pgp. For example, if you upload the file named chapter4.pdf, it will appear as chapter4.pdf.pgp on the remote site folder.

   If you download a file with the .pgp extension, if you have the appropriate private key, the file will be decrypted and verified. The file name will appear with it's original extension.

Turning off OpenPGP Mode

1. While connected to a remote server, select the remote server's tab.
2. Select Tools > OpenPGP Mode, or click OpenPGP Mode on the toolbar.
3. OpenPGP Mode is now turned off.