Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message Specification
RFC 8551

Received changes through RFC Editor sync (created alias RFC 8551, changed abstract to 'This document defines Secure/Multipurpose Internet Mail Extensions (S/MIME) version 4.0.  S/MIME provides a consistent way to send and receive secure MIME data.  Digital signatures provide authentication, message integrity, and non-repudiation with proof of origin.  Encryption provides data confidentiality.  Compression can be used to reduce data size.  This document obsoletes RFC 5751.', changed pages to 63, changed standardization level to Proposed Standard, changed state to RFC, added RFC published event at 2019-04-30, changed IESG state to RFC Published, created obsoletes relation between draft-ietf-lamps-rfc5751-bis and RFC 5751)