Nokia N85 User Manual page 165

Digital certificates do not guarantee safety; they are
used to verify the origin of software.
In the certificate management main view, you can
see a list of authority certificates that are stored in
your device. Scroll right to see a list of personal
certificates, if available.
Digital certificates should be used if you want to
connect to an online bank or another site or remote
server for actions that involve transferring
confidential information. They should also be used
if you want to reduce the risk of viruses or other
malicious software and be sure of the authenticity
of software when downloading and installing
software.
Important: Even if the use of certificates
makes the risks involved in remote connections and
software installation considerably smaller, they
must be used correctly in order to benefit from
increased security. The existence of a certificate
does not offer any protection by itself; the
certificate manager must contain correct,
authentic, or trusted certificates for increased
security to be available. Certificates have a
restricted lifetime. If "Expired certificate" or
"Certificate not valid yet" is shown, even if the
certificate should be valid, check that the current
date and time in your device are correct.
View certificate details—check authenticity
You can only be sure of the correct identity of a
server when the signature and the validity period
of a server certificate have been checked.
You are notified if the identity of the server is not
authentic or if you do not have the correct security
certificate in your device.
To check certificate details, scroll to a certificate,
and select Options Certificate
>
validity of the certificate is checked, and one of the
following notes may be displayed:
Certificate not trusted
●
application to use the certificate.
Expired certificate — The certificate validity
●
period has ended.
Certificate not valid yet
●
validity period has not yet begun.
Certificate corrupted
●
be used. Contact the certificate issuer.
Change the trust settings
Before changing any certificate settings, you must
make sure that you really trust the owner of the
certificate and that the certificate really belongs to
the listed owner.
Scroll to an authority certificate, and select
Options Trust settings. Depending on the
>
certificate, a list of the applications that can use the
selected certificate is shown. For example:
details. The
— You have not set any
— The certificate
— The certificate cannot
165