Technical Summary:
This document specifies the message handling for S/MIME 4.0.
The changes since S/MIME 3.2 include required support for
authenticated encryption, increased RSA key sizes, moving old
cryptographic algorithms to historic status, and requiring support
for AES-256 GCM, ChaCha200-Poly1305, SHA-512, ECDSA with P-256,
EdDSA, and Ed25519.
Working Group Summary:
There is strong consensus for this document in the LAMPS WG.
Document Quality:
S/MIME has wide support, and several implementers have said that
they will implement the new features in this document.
Personnel:
Russ Housley is the document shepherd.
Eric Rescorla is the responsible area director.