@techreport{sullivan-tls-xof-schedule-00,
    number =    {draft-sullivan-tls-xof-schedule-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-sullivan-tls-xof-schedule/00/},
    author =    {Nick Sullivan},
    title =     {{XOF-based key schedules for TLS 1.3}},
    pagetotal = 58,
    year =      2026,
    month =     jul,
    day =       24,
    abstract =  {TLS 1.3 runs its entire key schedule on HKDF over SHA-2. This document defines an extension that replaces that schedule with one built on an extendable-output function (XOF): the negotiated KDF governs every derivation, the Finished and binder MACs, and the transcript hash, so no SHA-2 remains in the key schedule. The cipher suites, AEAD algorithms, state machine, and record layer are unchanged, and a connection without the extension uses HKDF as today. Two KDFs are defined, SHAKE256 and the reduced-round TurboSHAKE256. This document updates RFC 9258.},
}