With OpenPGP Applet you can encrypt or sign text using the public key encryption of OpenPGP.

Es inseguro escribir texto confidencial en un navegador web ya que ataques de JavaScript pueden accederlo desde dentro del navegador. Preferentemente deberías escribir tu texto en una aplicación separada, cifrarlo usando OpenPGP Applet, y pegar el texto cifrado en tu navegador, antes de enviarlo por email por ejemplo.

Cuando uses OpenPGP Applet para cifrar emails, los caracteres no-ASCII (por ejemplo caracteres no-Latinos o caracteres con acentos) podrían no mostrarse correctamente a los remitentes del email.

Si vas a cifrar tus emails frecuentemente, te recomendamos que configures Thunderbird en su lugar.

This technique requires you to use public-key cryptography. If you never used OpenPGP keys before, you might rather want to encrypt your text using a passphrase with OpenPGP passphrase encryption. See the corresponding documentation.
  1. Write your text in a text editor. Do not write it in the web browser!

    Click on OpenPGP Applet and choose Open Text Editor to open gedit.

  2. Select with the mouse the text that you want to encrypt or sign. To copy it into the clipboard, right-click on the selected text and choose Copy from the menu.

    OpenPGP Applet now shows lines of text, meaning that the clipboard contains non-encrypted text:

  3. Click on OpenPGP Applet and select Sign/Encrypt Clipboard with Public Keys from the menu.

    If you receive the error message “The clipboard does not contain valid input data”, try to copy your text again, starting from step 2.

  4. If you want to encrypt the text, select one or more public keys for the recipients of the encrypted text in the Choose keys dialog box. To select a public key, double-click on the corresponding line in the Select recipients list box.

  5. If you want to sign the text, select the secret key with which you want to sign the text in the Sign message as drop-down list.

  6. If you want to hide the recipients of the encrypted text, select the Hide recipients check box. Otherwise anyone who sees the encrypted text can know who the recipients are.

  7. Click on the OK button.

    If you receive the warning message Do you trust these keys, answer it accordingly.

  8. If you selected one or several public keys to encrypt the text, OpenPGP Applet now shows a padlock, meaning that the clipboard contains encrypted text:

    If you only selected a secret key to sign the text, OpenPGP Applet now shows a seal, meaning that the clipboard contains signed text:

  9. To paste the encrypted or signed text into another application, right-click in the application where you want to paste it and choose Paste from the menu.

    For example, you can paste it into the web browser to send it by email.

    Encrypted text starting with

To store your GnuPG keys and configuration across separate working sessions, you can activate the GnuPG persistence feature.