RFC 9949 - BUSA-TLS: Mandatory Audio Component (MAC) Pre-Shared Key (PSK) Derivation for TLS 1.3 Using 2 Live Crew's "Banned in the U.S.A."
- Status: Informational
- Published: April 2026
- Stream: Independent
- Pages: 9
- Errata: RFC Editor Errata
Abstract
This Informational independent-stream RFC specifies BUSA-TLS, a deliberately unconventional modification to the TLS 1.3 key schedule in which the zero-byte IKM used without a PSK is replaced by a SHA-256 digest of a specific Mandatory Audio Component. It is written in an April 1 style and has no IANA actions.
Contents
- 1. Introduction
- 2. Conventions and Definitions
- 3. Motivation
- 4. The Mandatory Audio Component (MAC)
- 5. Key Schedule Modification
- 6. Error Handling
- 7. Implementation Notes
- 8. Security Considerations
- 9. Historical and Legal Considerations
- 10. IANA Considerations
- 11. References
- Appendix A. Historical Parallel
- Appendix B. One Very Important Thought
- Author's Address
Related Resources
- Official Text: RFC 9949
- Official Page: RFC 9949 DataTracker
- Errata: RFC Editor Errata