RFC 8823: Extensions to Automatic Certificate Management Environment for End-User S/MIME Certificates

This document specifies identifiers and challenges required to enable the Automated Certificate Management Environment (ACME) to issue certificates for use by…

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Outgoing relationships (22 related RFCs)

Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 8174: Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words
Normative reference — RFC 4648: The Base16, Base32, and Base64 Data Encodings
Normative reference — RFC 2046: Multipurpose Internet Mail Extensions (MIME) Part Two: Media Types
Normative reference — RFC 2818: HTTP Over TLS
Normative reference — RFC 5322: Internet Message Format
Normative reference — RFC 5890: Internationalized Domain Names for Applications (IDNA): Definitions and Document Framework
Normative reference — RFC 5321: Simple Mail Transfer Protocol
Normative reference — RFC 6234: US Secure Hash Algorithms (SHA and SHA-based HMAC and HKDF)
Normative reference — RFC 2986: PKCS #10: Certification Request Syntax Specification Version 1.7
Normative reference — RFC 2231: MIME Parameter Value and Encoded Word Extensions: Character Sets, Languages, and Continuations
Normative reference — RFC 6376: DomainKeys Identified Mail (DKIM) Signatures
Normative reference — RFC 8551: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message Specification
Normative reference — RFC 8555: Automatic Certificate Management Environment (ACME)
Normative reference — RFC 2985: PKCS #9: Selected Object Classes and Attribute Types Version 2.0
Normative reference — RFC 6531: SMTP Extension for Internationalized Email
Normative reference — RFC 3834: Recommendations for Automatic Responses to Electronic Mail
Normative reference — RFC 8398: Internationalized Email Addresses in X.509 Certificates
Normative reference — RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling
Normative reference — RFC 8616: Email Authentication for Internationalized Mail
Informative reference — RFC 4021: Registration of Mail and MIME Header Fields
Informative reference — RFC 8058: Signaling One-Click Functionality for List Email Headers

Incoming relationships (2 related RFCs)

Informatively referenced by — RFC 9787: Guidance on End-to-End Email Security
Informatively referenced by — RFC 9891: Automated Certificate Management Environment (ACME) Delay-Tolerant Networking (DTN) Node ID Validation Extension