This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ====== Certificates - verifying our network identity ====== In case you need our RADIUS server certificate, or the Certificate Authority certificate, we offer download below. Local copies are also available below. **CA certificates:** \\ <del> [[https://pki.cesnet.cz/cs/certificates-tcs.html?redirect=1#hellenic_academic_and_research_institutions_rootca_2015_korenovy_certifikat|CESNET – CA for server certificatesh]] ({{ :verejne:sit:crt-hellenic-academic-and-research-institutions-rootca-2015.pem|HARICA RootCA 2015 - local copy in PEM format}}) </del> <note warning>We are temporarely using [[https://letsencrypt.org/certificates/|Let's Encrypt]] certificates, use verification against system certificates</note> **CA certifikáty:** \\ [[https://crt.sh/?caid=7394|ISRG Root X1 (Let's Encrypt root CA)]] (**{{ :verejne:sit:isrg_root_x1.pem | ISRG Root X1 - local copy in PEM format}}**) ===== Install certificates in OS Android ===== First, download certificates from above (highlighted in bold) your Android device. We recommend using Chrome or integrated browser to perform the download, or download them using your laptop/computer and transfer to your Android using a USB cable or an SD card. The following instructions differ from device to device, but they all follow the same theme: In your Android device: * Go to **Settings** -> **Wi-Fi**. * Go to **Advanced Wi-Fi**. This can be hidden in a context menu. * Choose **Install a certificate**. * A file browser should open. Find your downloaded certificate file (usually in "Downloads" directory) and tap the file. (You only need to install one of the PEM/DER. If one fails, try the other one.) * Follow the instructions on your device. Choose a name for the certificate, like "UserTrust CA" or "Sincoolka". * Choose Wi-Fi as a certificate type, if possible. * Confirm the installation. * Then, [[en:verejne:sit:wi-fi:android|during setting up Wi-Fi]], select this new certificate as a **CA certificate**. <note important> When you remove the Sincoolka Wi-Fi settings, the saved certificate might also get removed. Therefore, you might need to repeat the procedure above. </note>