RFC 9709: Encryption Key Derivation in the Cryptographic Message Syntax (CMS) Using HKDF with SHA-256

This document specifies the derivation of the content-encryption key or the content-authenticated-encryption key in the Cryptographic Message Syntax (CMS)…

Read RFC 9709 on the RFC Editor

Outgoing relationships (10 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 5652: Cryptographic Message Syntax (CMS)
Normative reference — RFC 5869: HMAC-based Extract-and-Expand Key Derivation Function (HKDF)
Normative reference — RFC 5083: Cryptographic Message Syntax (CMS) Authenticated-Enveloped-Data Content Type
Normative reference — RFC 8551: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message Specification
Informative reference — RFC 4086: Randomness Requirements for Security
Informative reference — RFC 3852: Cryptographic Message Syntax (CMS)
Informative reference — RFC 5911: New ASN.1 Modules for Cryptographic Message Syntax (CMS) and S/MIME
Informative reference — RFC 5084: Using AES-CCM and AES-GCM Authenticated Encryption in the Cryptographic Message Syntax (CMS)