Microsoft Corporation RH-26 User Manual

Page of 132
Nokia 
6820 User Guide
89
Copyright © Nokia 2004
Services
However, the security icon is not an indication that the data transmission between the 
gateway and the content server (place where the requested resource is saved) is secure. It 
is up to the service provider to secure the data transmission between the gateway and the 
content server.
Authority certificates are used by some services, such as banking, for checking the validity 
of other certificates. Authority certificates can be either saved in the security module by the 
service provider, or they can be downloaded from the network, if the service supports the 
use of authority certificates. 
User certificates are issued to users by a Certifying Authority. User certificates are required, 
for example, to create a digital signature and they associate the user with a specific private 
key in a security module. 
While 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.
Before changing these settings, make sure that you really trust the owner of the certificate 
and that the certificate really belongs to the listed owner. 
SECURITY MODULE
The security module can contain certificates as well as private and public keys. The security 
module may improve the security services for applications requiring browser connection, 
and allows you to use a digital signature. The certificates are saved in the security module 
by the service provider.
Select Menu > Services > Settings > Security settings > Security module settings. Select 
from the following module settings:
Security module details—to show the security module title, status, manufacturer and serial 
number.
Module PIN request—to set the phone to ask for the module PIN when using services that 
are provided by the security module. Key in the code and select On. To disable the module 
PIN request, select Off.
Change module PIN—to change the module PIN, if allowed by the security module. Key in 
the current module PIN code; then key in the new code twice.
Change signing PIN—to change a signing PIN. Select the signing PIN that you want to 
change. Key in the current PIN code; then key in the new code twice.