Electronic digital signature of mail messages has a fundamentally different purpose compared to a signature, for example, in Word. In this case, the EDS certificate only confirms that the message you sent reached the addressee unchanged, was not intercepted or distorted. In addition, in Outlook it is not added to each message separately, but is set in the program settings as the default for all messages outgoing from the mailbox for which the certificate has been obtained.
It is necessary
- - digital certificate for e-mail;
- - access to the Internet;
- - CryptoPro CSP package.
Instructions
Step 1
First of all, make sure that the e-signature certificate you have has an "email" purpose. To do this, go through "All Programs" -> "CRYPTO-PRO" -> "Certificates". Open the store "Personal" -> "Registry" -> "Certificates", select the certificate with which you will sign e-mail, right-click on it and select "Properties". In the "Purpose of the certificate" field, check the box next to "Secure email", if it is not there, and click OK.
Step 2
Open Outlook, go to Tools -> Trust Center … and open the Email Protection menu. Check the box next to "Digitally sign outgoing messages." In the "default" field, select the required signing certificate if it is displayed in the drop-down menu. If it is not there, click "Options" to open the "Change Security Settings" panel. In the "Certificates and algorithms" group opposite the "Signing certificate:" field, click "Select …", even if the window is inactive. The program will review the certificates available in the store and in the "Windows Security" window will offer to select the required certificate.
Step 3
Click OK, and the program will fill in the empty fields automatically according to the selected certificate. Select the check boxes for the Default security settings for this format and Send certificates with message. Select S / MIME cryptography format, click OK. Now all outgoing messages from your email will be authenticated with this certificate.
Step 4
If the security certificates installed in the repository are not found, you can get it for free by clicking the Get Identity button in the Trust Center. The Office Online Digital ID tab opens in your Internet browser. You can get your certification free of charge by following the link “visit the Comodo website”. In the tab that opens, click the Free Email Certificate button, fill in all the proposed fields and wait for the notification to your mailbox. The email will ask you to generate a certificate for your email address.
Step 5
After the certificate has been generated and installed in the store, repeat steps 2 and 3 in Outlook. Now, each outgoing message will be certified by the installed security certificate, about which recipients will receive a corresponding notification in the form of a link icon.
