Nokia N97 N97 User Manual page 128

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.
Select from the following:
Authority certificates — View and edit authority
certificates.
Trusted site certificates — View and edit trusted site
certificates.
Personal certificates — View and edit personal
certificates.
Phone certificates — View and edit device certificates.
Digital certificates do not guarantee safety; they are used
to verify the origin of 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.
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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 the details of a certificate, select
Certificate details. The validity of the certificate is
checked, and one of the following notes may be displayed:
Certificate not trusted — You have not set any
application to use the certificate.
Expired certificate — The certificate validity period has
ended.
Certificate not valid yet — The certificate validity period
has not yet begun.
Certificate corrupted — The certificate cannot 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.
To change the settings for an authority certificate, select
Options Trust settings. Depending on the certificate,
>
a list of the applications that can use the selected
certificate is shown. For example:
Options
>