Received-Content-MIC
AS2 MDN extension field, the core of receipt proof.
Definition
Received-Content-MIC carries the base64 message-digest computed over the received content, followed by the algorithm identifier (e.g. sha1, md5). The sender compares this MIC against the one it retained for the original message: a match proves integrity. It is required in a signed MDN and optional otherwise.
Origin
Defined in section 7.4.3 of RFC 4130 (MIME-Based Secure Peer-to-Peer Business Data Interchange Using HTTP, Applicability Statement 2), published by the IETF in 2009.
Example in context
Received-content-MIC: yhVQ+...IDg=, sha1