Java library: acme4j

I wrote a Java library:

My goal is to make it fully implement the ACME specifications and make it well tested and documented. It’s basically made for Java backends, but an included example is a small client that takes care for getting a cert for a set of domains.

(This posting was supposed to appear as a reply in the List of Client Implementations. I hope I did it right…)

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i published the keyManager for the acme protocol so that an client is able to handle tls-sni-01 challenge.
The requirement to add the token is an security issue, because the server can not determine if the token
was requested by an known/authorized account.