Certificate export from browser
- To export the S/MIME certificate, go to "Tools" and "Settings" in your browser.
see: Figure 1.1: Mozilla Firefox
- Select the "Privacy & Security" section and go to the Certificates section.
see: Figure 1.2: Mozilla Firefox
- Select the "Show certificates" button and switch to the "Your certificates" tab.
see: Figure 1.3: Mozilla Firefox and Figure 1.4: Mozilla Firefox
- Select the corresponding certificate from the displayed list and confirm with "Save".
see: Figure 1.5: Mozilla Firefox
- Store the certificate securely in a local location.
- Open the browser "Internet Explorer" and select "Tools / Internet Options...". Switch to "Contents" and click on the button "Certificates..." in the middle of the window.
see: Figure 1.1: Internet Explorer and Figure 1.2: Internet Explorer
- Your personal certificate is displayed under "Own certificates". To export the corresponding certificate, select it and click "Export".
see: Figure 1.3: Internet Explorer
- Select the option "Yes, export private key" and click "Next".
see: Figure 1.4: Internet Explorer and Figure 1.5: Internet Explorer
- You are now prompted to secure the private key with a password. If you have entered the password twice, please click "Next". Important: Keep this password safe! You need it if you want to import your certificate into another application.
see: Figure 1.6: Internet Explorer
- Now specify where and under what name your certificate is to be saved.
- The following message indicates that the key will be exported. Click "OK".
- Confirm the message that the export process was completed successfully with "OK".
- The following icon will now appear on your desktop. Of course you can move the file from the desktop to any folder.
If the certificate is requested via Internet Explorer and used with the email client Outlook, it is automatically integrated into Outlook after the request processing and no export of the certificate from Internet Explorer is required.
In this case, open the link in the email to your own certificate in Internet Explorer and click "Import certificate" on the opened page.
Now the certificate is automatically included in your Outlook. Please note that the settings must still be made in the Trust Center. See section Outlook Certificate Installation.
- Open the "Keychain management" program. You can find it e.g. via Spotlight search or in the Finder under Programs/Utilities (Shift-Cmd-U).
- Select the certificate you want to export (typically found in the keychain "Login" in the category "My certificates").
- Right-click (or hold down the Ctrl key) on the certificate entry and select "Export your name" from the context menu.
- Leave the file format at "Personal Information Exchange (.p12)" (for personal certificates with a private key), enter the desired file name and select the storage location.
- Select a secure password and enter it identically in both input fields (a bar graph shows the security level of the selected password). You must re-enter this password if you want to import the certificate into another software.
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