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Tip: When you add a new certificate,
check its authenticity.
View certificate details
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.
To view certificate details, open a
certificate folder, and select a certificate
and Options > Certificate details.
One of the following notes may appear:
Certificate not trusted — You have not
set any application to use the certificate.
You may want to change the trust
settings.
Expired certificate — The period of
validity has ended for the selected
certificate.
Certificate not valid yet — The period
of validity has not yet begun for the
selected certificate.
Certificate corrupted — The
certificate cannot be used. Contact the
certificate issuer.
Certificate trust settings
Select Menu > Ctrl. panel > Settings
and General > Security > Certificate
management.
Trusting a certificate means that you
authorise it to verify web pages, e-mail
servers, software packages, and other
data. Only trusted certificates can be
used to verify services and 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.
Before changing any certificate settings,
you must make sure that you really trust
Security and data management 133
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