Copyright © 2006 Nokia. All rights reserved.
Tools
92
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 period of validity of a server
certificate have been checked.
You are notified on the device display 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. See “Change the trust
settings”, p. 92.
• 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.
• Online certif. check—Select to check the online
certificates before installing an application.
Select Options > Edit trust setting to change the value.
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