Dear Jaroslav, On 12/18/18 19:18, Jaroslav Kysela wrote: > Dne 18.12.2018 v 18:30 Paul Menzel napsal(a): >> [Please CC, as I am not subscribed.] >> Despite working in the browser (Mozilla Firefox), GNU Wget and curl give >> the error below trying to download the script `alsa-info.sh`. >> >> $ wget https://www.alsa-project.org/alsa-info.sh >> --2018-12-18 17:27:57-- https://www.alsa-project.org/alsa-info.sh >> Resolving www.alsa-project.org (www.alsa-project.org)... 77.48.224.243 >> Connecting to www.alsa-project.org (www.alsa-project.org)|77.48.224.243|:443... connected. >> ERROR: The certificate of ‘www.alsa-project.org’ is not trusted. >> ERROR: The certificate of ‘www.alsa-project.org’ hasn't got a known issuer. > We use Let's Encrypt (https://letsencrypt.org) certificates based on the > domain verification. It appears that your system CA certificate package > is missing the current CA key: > > issuer=/C=US/O=Let's Encrypt/CN=Let's Encrypt Authority X3 > > You can find this CA certificate here: > > https://letsencrypt.org/certificates/ > > The browsers are using own CA certificate database, and the Let's > Encrypt CA certificate is regularly updated there. I believe, you need to add that certificate to the chain. The online SSL test also fails and complains about incomplete certificate chain [1]. > This server's certificate chain is incomplete. Grade capped to B. Here is what the test with `openssl` shows. ``` $ openssl s_client -connect www.alsa-project.org:443 CONNECTED(00000003) depth=0 CN = alsa-project.org verify error:num=20:unable to get local issuer certificate verify return:1 depth=0 CN = alsa-project.org verify error:num=21:unable to verify the first certificate verify return:1 --- Certificate chain 0 s:CN = alsa-project.org i:C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3 --- […] ``` Does that work on your system? Kind regards, Paul [1]: https://www.ssllabs.com/ssltest/analyze.html?d=www.alsa-project.org
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