Nokia N95 User Manual page 115

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 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
certificate details, the validity of the certificate is checked,
and one of the following notes may be displayed:
106 Copyright © 2007 Nokia. All rights reserved.
details. When you open
•
Certificate not trusted
application to use the certificate. See
settings", on page 106.
•
Expired certificate — The period of validity has ended
for the selected certificate.
•
Certificate not valid yet
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
Trust settings. Depending on the certificate, a list of the
applications that can use the selected certificate is shown.
For example:
• Symbian installation: Yes
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
Select Options > Edit trust setting
— You have not set any
"Change the trust
— The period of validity has
Options >
— The certificate is able to
TM application.
to change the value.