3 This is a client for signing certificates with an ACME-server (currently only provided by letsencrypt) implemented as a relatively simple shell-script.
5 It uses the `openssl` utility for everything related to actually handling keys and certificates, so you need to have that installed.
7 Other dependencies are (for now): curl, sed
9 Perl no longer is a dependency.
10 The only remaining perl code in this repository is the script you can use to convert your existing letsencrypt-keyfile into something openssl (and this script) can read.
13 - Signing of a list of domains
14 - Renewal if a certificate is about to expire
15 - Certificate revocation
17 Please keep in mind that this software and even the acme-protocol are relatively young and may still have some unresolved issues.
18 Feel free to report any issues you find with this script or contribute by submitting a pullrequest.
22 Add domains to domains.txt like in this example:
25 example.com www.example.com
26 example.net www.example.net wiki.example.net
29 This states that there should be two certificates `example.com` and `example.net`,
30 with the other domains in the corresponding line being their alternative names.
32 You'll also need to set up a webserver to serve the challenge-response directory as configured with `$WELLKNOWN`,
33 or you can use the hook in the script if you want to deploy it some other way (e.g. copy it to a server via scp).
35 After doing those two things you can just `./letsencrypt.sh`, and it should generate certificates.
37 It can be used inside a cronjob as it automatically detects if a certificate is about to expire.
39 ### Certificate revocation
41 Usage: `./letsencrypt.sh revoke path/to/cert.pem`
45 If you want to use nginx you can set up a location block to serve your challenge responses:
48 location /.well-known/acme-challenge {
49 root /var/www/letsencrypt;
57 This perl-script can be used to import the account key from the original letsencrypt client.
59 You should copy `private_key.json` to the same directory as the script.
60 The json-file can be found in a subdirectory of `/etc/letsencrypt/accounts/acme-v01.api.letsencrypt.org/directory`.
62 Usage: `perl import-account.pl`
66 This script can be used to import private keys and certificates created by the original letsencrypt client.
68 By default it expects the certificates to be found under `/etc/letsencrypt`, which is the default output directory of the original client.
69 You can change the path by setting LETSENCRYPT in your config file: ```LETSENCRYPT="/etc/letsencrypt"```.
71 Usage: `./import-certs.sh`