Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

//usr/share/applications/gcr-viewer.desktop

 [Desktop Entry]
Name=View file
MimeType=application/pkcs12;application/pkcs12+pem;application/pkcs7-mime;application/pkcs7-mime+pem;application/pkcs8;application/pkcs8+pem;application/pkix-cert;application/pkix-cert+pem;application/pkix-crl;application/pkix-crl+pem;application/x-pem-file;application/x-pem-key;application/x-pkcs12;application/x-pkcs7-certificates;application/x-x509-ca-cert;application/x-x509-user-cert;application/pkcs10;application/pkcs10+pem;application/x-spkac;application/x-spkac+base64;
Exec=/usr/bin/gcr-viewer
Type=Application
Terminal=false
NoDisplay=true
X-GNOME-Bugzilla-Bugzilla=GNOME
X-GNOME-Bugzilla-Product=gnome-keyring
X-GNOME-Bugzilla-Component=gcrX-Ubuntu-Gettext-Domain=gcr