Overview
    Alice & Bob
    Sending
    Receiving
    Identity
    Encryption
Technology
    Identity CA
    MTA Identity
    MTA Transport
Changes
Glossary

Message Encryption and Signature Overview

All messages get encrypted and digitally signed before the get sent over HTTP via TLS. A message consists therefore of a key info object, that contains the algorithm used and some other data necessary for decryption, and a number of cipher text objects for header, body and attachments. The following diagram shows how message parts are encrypted and decrypted.
Message Encryption Overview
Message Encryption Overview
  • HTTP Hyper Text Transfer Protocol
  • TLS Transport Layer Security