Internet Engineering Task Force (IETF) R. Barnes Request for Comments: 8555 Cisco Category: Standards Track J. Hoffman-Andrews ISSN: 2070-1721 EFF D. McCarney Let's Encrypt J. Kasten University of Michigan March 2019 Automatic Certificate Management Environment (ACME) Abstract Public Key Infrastructure using X.509 (PKIX) certificates are used for a number of purposes, the most significant of which
![RFC 8555: Automatic Certificate Management Environment (ACME)](https://cdn-ak-scissors.b.st-hatena.com/image/square/75f8ab4236c87ca6bb308e0d4c6f296e147d9501/height=288;version=1;width=512/https%3A%2F%2Fstatic.ietf.org%2Fdt%2F12.25.0%2Fietf%2Fimages%2Fietf-logo-card.png)
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