File formats:

Also available: XML file for editing

 

Status:

INFORMATIONAL

Author:

R. Sayre

Stream:

INDEPENDENT

Cite this RFC: TXT  |  XML  |   BibTeX

DOI:  https://doi.org/10.17487/RFC9949

Discuss this RFC: Send questions or comments to the mailing list [email protected]

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC 9949

Abstract

TLS 1.3 (RFC 8446) eliminates null cipher suites entirely. However, one vestigial zero remains in the key schedule: when no Pre-Shared Key (PSK) is used, the Input Keying Material (IKM) for the initial HKDF-Extract operation is a string of zero bytes. This document specifies that this zero-byte IKM MUST be replaced with the SHA-256 digest of the raw PCM audio data of "Banned in the U.S.A." by 2 Live Crew (from the album "Banned in the U.S.A.", 1990), hereafter referred to as the Mandatory Audio Component (MAC). Implementations that omit the MAC are non-conformant with BUSA-TLS and also have questionable taste in music.

The IETF's process-heavy, consensus-driven, working-group-reviewed approach to protocol standardization is a fine way to run a standards body. It is also completely antithetical to the spirit of a document that requires a jury-banned rap album as a cryptographic primitive.

This document is offered in the same spirit as the album it incorporates: unapologetically and in defiance of institutional authority.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.