@misc{rfc4262,
    series =    {Request for Comments},
    number =    4262,
    howpublished =  {RFC 4262},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4262},
    url =       {https://www.rfc-editor.org/info/rfc4262},
    author =    {Stefan Santesson},
    title =     {{X.509 Certificate Extension for Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities}},
    pagetotal = 5,
    year =      2005,
    month =     dec,
    abstract =  {This document defines a certificate extension for inclusion of Secure/Multipurpose Internet Mail Extensions (S/MIME) Capabilities in X.509 public key certificates, as defined by RFC 3280. This certificate extension provides an optional method to indicate the cryptographic capabilities of an entity as a complement to the S/MIME Capabilities signed attribute in S/MIME messages according to RFC 3851. {[}STANDARDS-TRACK{]}},
}