@misc{rfc1424,
    series =    {Request for Comments},
    number =    1424,
    howpublished =  {RFC 1424},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC1424},
    url =       {https://www.rfc-editor.org/info/rfc1424},
    author =    {Burt Kaliski},
    title =     {{Privacy Enhancement for Internet Electronic Mail: Part IV: Key Certification and Related Services}},
    pagetotal = 9,
    year =      1993,
    month =     feb,
    abstract =  {This document describes three types of service in support of Internet Privacy-Enhanced Mail (PEM) {[}1-3{]}: key certification, certificate- revocation list (CRL) storage, and CRL retrieval. {[}STANDARDS-TRACK{]}},
}