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Exchanging encrypted and signed emails with RTE's Information System


Using your certificate to exchange emails



Using your personal certificate, its associated private key, RTE CAs certificates and RTE’s application certificate, you can:



Decryption and verification of the signature of a message are disjoint processes. When you receive an encrypted-signed message: These two processes are done automatically when you open a signed-encrypted email with a properly configured email client that supports the secure email format S/MIME.
IMPORTANT NOTE

To verify the signature of a message you need to own the right certificate and trust the CA that issued the certificate of the sender.



Encrypting and signing message are two disjoint processes. When you send an encrypted-signed message: The certificate of the recipient can be obtained in several ways. RTE applications transmit to you their certificate by sending a signed message: that is the way you will get their certificate.

In doing so, when you receive a signed message, use "Add sender to contacts" to save at the same time its certificate, which you can use to send encrypted messages to him.
IMPORTANT NOTE

Encrypting a message requires to possess a valid certificate corresponding to the recipient's email address.



In order to be able to exchange signed-encrypted emails with RTE, the steps are as follows: To perform these steps, please refer directly to one of the following chapters: the one concerning the email client that you use for your mail exchanges with RTE.



Please select the email client you use



Error codes returned by email

In an exchange of emails between the user and an application, when the certificate was generated and installed using the procedures described in this document, it is possible that functionality error appears. In this case, the element (a server or a gateway) in question returns an error code by email.

The object of error messages returned by RTE’s cryptographic gateway is as follows :

nnn!!<Intitulé-FR>!!<Title-EN>> <Sujet-du-message-original>
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