%% You should probably cite draft-ribose-cfrg-sm4 instead of this I-D.
@techreport{crypto-sm4-00,
    number =    {draft-crypto-sm4-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-crypto-sm4/00/},
    author =    {Ronald Henry Tse and Wong Wai Kit},
    title =     {{The SM4 Block Cipher Algorithm And Its Modes Of Operations}},
    pagetotal = 27,
    year =      2017,
    month =     sep,
    day =       8,
    abstract =  {This document describes the SM4 symmetric blockcipher algorithm published as GB/T 32907-2016 by the Organization of State Commercial Administration of China (OSCCA).},
}