Nokia 6170

Page 137
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137
Copyright © 2005 Nokia. All rights reserved.
Certificates
Important: Note that 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.
There are three kinds of certificates: server certificates, authority certificates, and 
user certificates. You may receive these certificates from your service provider. 
Authority certificates and user certificates may also be saved in the security 
module by the service provider.
, the security indicator, is displayed during a connection, if the data 
transmission between the phone and the content server is encrypted.
The security icon does not indicate that the data transmission between the gateway and the 
content server (or place where the requested resource is stored) is secure. The service 
provider secures the data transmission between the gateway and the content server.
Digital signature
You can make digital signatures with your phone. Using the digital signature can 
be the same as signing your name to a paper bill, contract or other document. 
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