With OpenPGP Applet you can encrypt text with a passphrase using the passphrase 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 share a secret passphrase with the people who will decrypt the text. OpenPGP also allows you to use public-key cryptography to send confidential messages without having a shared passphrase. 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. 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 Encrypt Clipboard with Passphrase 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. In the Passphrase dialog box, enter a passphrase of your choice. Repeat the same passphrase in the second dialog box.

  5. OpenPGP Applet now shows a padlock, meaning that the clipboard contains encrypted text:

  6. To paste the encrypted 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
 -----BEGIN PGP MESSAGE-----