@misc{rfc8555,
    series =    {Request for Comments},
    number =    8555,
    howpublished =  {RFC 8555},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC8555},
    url =       {https://www.rfc-editor.org/info/rfc8555},
    author =    {Richard Barnes and Jacob Hoffman-Andrews and Daniel McCarney and James Kasten},
    title =     {{Automatic Certificate Management Environment (ACME)}},
    pagetotal = 95,
    year =      2019,
    month =     mar,
    abstract =  {Public Key Infrastructure using X.509 (PKIX) certificates are used for a number of purposes, the most significant of which is the authentication of domain names. Thus, certification authorities (CAs) in the Web PKI are trusted to verify that an applicant for a certificate legitimately represents the domain name(s) in the certificate. As of this writing, this verification is done through a collection of ad hoc mechanisms. This document describes a protocol that a CA and an applicant can use to automate the process of verification and certificate issuance. The protocol also provides facilities for other certificate management functions, such as certificate revocation.},
}