Nokia 6630 User Manual page 82

Glossary: Digital
certificates are used to
verify the origin of the
XHTML or WML pages and
installed software.
However, they can only
be trusted if the origin of
the certificate is known
to be authentic.
Options in the
certificate management
main view: Certificate
details, Delete, Trust
settings, Mark/Unmark,
Help, and Exit.
82
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 phone are correct.
Viewing certificate details - checking 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 will be notified on the phone display if the identity of the server is not authentic or if
you do not have the correct security certificate in your phone.
To check certificate details, scroll to a certificate, and select Options→
When you open certificate details, Certificate management checks the validity of the
certificate, and one of the following notes may appear:
• Certificate not trusted - You have not set any application to use the certificate. See
'Changing the trust settings', p. 82.
• Expired certificate - The period of validity has ended for the selected certificate.
• Certificate not valid yet
certificate.
• Certificate corrupted - The certificate cannot be used. Contact the certificate issuer.
Changing 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.
- The period of validity has not yet begun for the selected
Certificate details.