%% You should probably cite draft-ounsworth-cfrg-kem-combiners-05 instead of this revision.
@techreport{ounsworth-cfrg-kem-combiners-00,
    number =    {draft-ounsworth-cfrg-kem-combiners-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-ounsworth-cfrg-kem-combiners/00/},
    author =    {Mike Ounsworth},
    title =     {{Combiner function for hybrid key encapsulation mechanisms (Hybrid KEMs)}},
    pagetotal = 14,
    year =      2022,
    month =     nov,
    day =       26,
    abstract =  {The migration to post-quantum cryptography often calls for performing multiple key encapsulations in parallel and then combining their outputs to derive a single shared secret. This document defines the KEM combiner KDF( H(ss1) \textbar{}\textbar{} H(ss2) ) which is considered to be a dual PRF in practice, even though not provably secure. This mechanism simplifies to KDF( ss1 \textbar{}\textbar{} ss2 ) when used with a KEM which internally uses a KDF to produce its shared secret. RSA-KEM, ECDH, Edwards curve DH, and CRYSTALS-Kyber are shown to meet this criteria and therefore be safe to use with the simplified KEM combiner.},
}