Nokia N78 - Manual (Page 147)

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 the owner of the
certificate and that the certificate really belongs to the
listed owner.
View certificate details—check authenticity
You can only be sure of the correct identity of a server
when the signature and the period of validity 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 details . When you open
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 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.
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:
● Symbian installation : Yes — The certificate is able
to certify the origin of a new Symbian operating
system application.
● Internet : Yes — The certificate is able to certify
servers.
● App. installation : Yes — The certificate is able to
certify the origin of a new Java™ application.
Select Options > Edit trust setting to change the
value.
Security module
Press , and select Tools > Settings > General >
Security > Security module .
To view or edit a security module (if available), scroll
to it, and press the scroll key.
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