Nokia 6681

Page 94
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Tools
94
Copyright © 2005 Nokia. All rights reserved. 
Certificate management
Digital certificates do not guarantee safety; they are used 
to verify the origin of software.
In the certificate management main view, you can see a 
list of authority certificates that are stored in your phone. 
Press 
 to see a list of personal certificates, if available.
 Options in the certificate management main view 
are 
Certificate details
, 
Delete
, 
Trust settings
, 
Mark/Unmark
, 
Help
, and 
Exit
.
 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. 
Digital certificates should be used if you want to connect 
to an online bank or another site or remote server for 
actions that involve transferring confidential information. 
They should also be used if you want to reduce the risk of 
viruses or other malicious software and be sure of the 
authenticity of software when downloading and installing 
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 phone 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 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 
> 
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. 95.
•
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.
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