Nokia 7380

Page 90
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Copyright © 2005 Nokia. All rights reserved.
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.
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.
Digital signature
You can make digital signatures with your phone if your SIM card has a security 
module. The signature can be traced back to you using the private key on the 
security module and the user certificate that was used to perform the signature. 
Using the digital signature can be the same as signing your name to a paper bill, 
contract, or other document. 
To make a digital signature, select a link on a page, for example, the title of the 
book that you want to buy and its price. The text to sign ( for example, amount, 
and date) is shown.
Check that the header text is 
Read
 and that the digital signature icon
 is 
shown.
Nokia_7380_issue_1_EB.fm  Page 90  Wednesday, November 16, 2005  12:25 PM
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