The S/MIME email encryption technology depends on the service of trusted third parties, so called Certificate Authorities (CA), from whom you must obtain a personal certificate for yourself, and install and configure it in Thunderbird. If you want to exchange encrypted messages with correspondents that are already set up to use S/MIME, then you need a personal email certificate key for yourself. Once you select it, you have completed your own setup for OpenPGP email security. the key contains a user ID with the email address of the account or identity that you are configuring inside Account Settings.the key is valid for both digital signing and encryption.If you have never used other software to create OpenPGP keys, or if you prefer not to reuse them, then Thunderbird allows you to create this kind of key for yourself inside Account Settings, in the End-To-End Encryption tab.Ĭlick the button to Add a key…, then either select import or create, depending on your needs.Īfter you import a key, then Thunderbird should offer you to select it as the personal key for that account or identity, if it passed the following requirements during import: (See the corresponding entry in the document OpenPGP in Thunderbird - HOWTO and FAQ.) If you would like to reuse them with the latest Thunderbird version, you could try to use the GnuPG software to retrieve them. They might still be stored on your computer. If you have previously used Thunderbird 68 (or older versions) with the Enigmail add-on, you might already have secret keys, because several versions of Enigmail automatically created secret keys without asking you. To ensure that your secret keys are still stored securely on your computer, it is best to set up a Primary Password in Thunderbird settings, which will then be automatically used to protect your OpenPGP secret keys, too. Note: Thunderbird will remove the protection of secret keys when importing them into Thunderbird.
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