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On Friday, September 26th, 2025 at 4:50 PM, Jeffrey Walton <[email protected]>
wrote:
> On Fri, Sep 26, 2025 at 3:47 PM olivares33561 via users
> [email protected] wrote:
>
> > Dear kind fedora users,
> >
> > I have a little problem with certificates. There are certificates for Mac
> > and for Windows, but none for Linux. Machine connects on some websites but
> > for others, not even advanced option works. How does one install these on
> > Linux ? Is there an idiot proof way of installing these?
> >
> > A *.DER file
> > A *.cer
> >
> > Cannot browse or update. Thanks & kind regards,
>
>
> 1. Convert the certificates to PEM format.
> - openssl x509 -in <infile.der> -inform DER -out <outfile.pem>
>
> -outform PEM
>
> 2. Copy the PEM formatted certificates to the new location
> - sudo cp *.pem /etc/pki/ca-trust/source/anchors/
>
> 3. Update the CA Store
> - sudo update-ca-trust
>
> Jeff
>
> ---
I tried something as follows but no cigar.
trust certifcates
A
Antonio Olivares
to me
3 hours agoDetails
trust
howto install?
olivares@fedora:~/Documents/Windows$ openssl x509 -inform DER -in
Fortinet_CA_SSL\ \(3\).cer -out Fortinet_CA_SSL\ \(3\).crt
unable to load certificate
139844394524800:error:0DFFF0A8:asn1 encoding
routines:CRYPTO_internal:wrong tag:asn1/tasn_dec.c:137:
139844394524800:error:0DFFF03A:asn1 encoding
routines:CRYPTO_internal:nested asn1
error:asn1/tasn_dec.c:777:Type=X509
olivares@fedora:~/Documents/Windows$ ls
'Fortinet_CA_SSL (3).cer'
olivares@fedora:~/Documents/Windows$ ls -l
total 4
-rwxrwxrwx. 1 olivares olivares 1431 Aug 29 07:36 'Fortinet_CA_SSL (3).cer'
olivares@fedora:~/Documents/Windows$
olivares@fedora:~/Documents/Apple$ ls
DER_Fortinet.cer
olivares@fedora:~/Documents/Apple$ openssl x509 -in DER_Fortinet.cer
-inform der -out DER_Fortinet2.cer
olivares@fedora:~/Documents/Apple$ sudo cp DER_Fortinet2.cer
/usr/local/share/ca-certificates/
[sudo] password for olivares:
Sorry, try again.
[sudo] password for olivares:
cp: cannot create regular file '/usr/local/share/ca-certificates/':
Not a directory
olivares@fedora:~/Documents/Apple$ ls
DER_Fortinet.cer
olivares@fedora:~/Documents/Apple$ openssl x509 -in DER_Fortinet.cer
-inform der -out DER_Fortinet2.cer
olivares@fedora:~/Documents/Apple$ sudo cp DER_Fortinet2.cer
/usr/local/share/ca-certificates/
[sudo] password for olivares:
Sorry, try again.
[sudo] password for olivares:
cp: cannot create regular file '/usr/local/share/ca-certificates/':
Not a directory
olivares@fedora:~/Documents/Apple$ sudo rpm -qa ca-certificates
ca-certificates-2024.2.69_v8.0.401-6.fc42.noarch
olivares@fedora:~/Documents/Apple$
Will try your suggestions on Monday and I believe we should succeed.
Also I would see how to connect an android tablet but first things first.
Best Regards,
Antonio
--
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