Nokia N97 User Manual page 141

Personal certificates
●
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.
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
— View and edit personal
Options
checked, and one of the following notes may be
displayed:
Certificate not trusted
●
application to use the certificate.
Expired certificate
●
period has ended.
Certificate not valid yet
●
period has not yet begun.
Certificate corrupted
●
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
>
certificate, a list of the applications that can use the
selected certificate is shown. For example:
Symbian installation:
●
to certify the origin of a new Symbian operating
system application.
Internet: Yes — The certificate is able to certify
●
servers.
App. installation:
●
certify the origin of a new Java™ application.
> To change the value, select
setting.
— You have not set any
— The certificate validity
— The certificate validity
— The certificate cannot be
settings. Depending on the
Yes — The certificate is able
Yes — The certificate is able to
Options Change trust
>
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