Applicare le firme digitali

Ottenere un certificato

You can get a certificate from a certification authority. No matter if you choose a governmental institution or a private company it is common to be charged for this service, for example when they certify your identity. Few other authorities issue certificates free of costs, like the Open Source Project CAcert which is based on the well-known and reliable Web of Trust model and is of growing popularity.

Gestire i certificati

Firmare un documento

  1. Scegliete File - Firme digitali - Firme digitali.

  2. Una finestra messaggi vi consiglia di salvare il documento. Scegliete Sì per salvare il file.

  3. After saving, you see the Digital Signatures dialog. Click Add to add a public key to the document.

  4. In the Select Certificate dialog, select your certificate and click OK.

  5. È ancora visualizzata la finestra di dialogo Firme digitali in cui potete, se necessario, aggiungere altri certificati. Scegliete OK per aggiungere la chiave pubblica al file salvato.

A signed document shows an iconIcon in the status bar. You can double-click the icon in the status bar to view the certificate.

The result of the signature validation is displayed in the status bar and within the Digital Signature dialog. Several documents and macro signatures can exist inside an ODF document. If there is a problem with one signature, then the validation result of that one signature is assumed for all signatures. That is, if there are ten valid signatures and one invalid signature, then the status bar and the status field in the dialog will flag the signature as invalid.

Firmare le macro in un documento

In genere le macro fanno parte di un documento. Quando firmate un documento, le macro che contiene vengono automaticamente firmate. Se volete firmare solo le macro ma non il documento, procedete come segue:

  1. Scegliete Strumenti - Macro - Firme digitali.

  2. Apponete la firma nello stesso modo descritto in precedenza per i documenti.

When you open the Basic IDE that contains signed macros, you see an iconIcon in the status bar.
You can double-click the icon in the status bar to view the certificate.