%% You should probably cite rfc2628 instead of this I-D.
@techreport{smyslov-crypto-api-00,
    number =    {draft-smyslov-crypto-api-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-smyslov-crypto-api/00/},
    author =    {Valery Smyslov},
    title =     {{Simple Cryptographic Program Interface (Crypto API)}},
    pagetotal = 30,
    year =      1999,
    month =     apr,
    day =       21,
    abstract =  {This document describes a simple Application Program Interface to cryptographic functions. This memo provides information for the Internet community.},
}