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2
Check that the header text is Read and that the digital signature icon
If the digital signature icon does not appear, there is a security breach. Do not
enter any personal data such as your signing PIN.
3
Scroll through and read all of the text before signing.
4
To sign the text, select Sign.
5
Select the user certificate you want to use, enter the signing PIN (provided with
the SIM card if the SIM card has a security module), and select OK.
The digital signature icon disappears, and the service may display a confirmation
of your purchase.
Cache memory
The information or services you access with the browser are temporarily saved in the
cache memory of the phone.
If you tried to access or have accessed confidential information requiring passwords
(for example, your bank account), clear the cache after each use.
To clear the cache from the menu, select Web > Clear the cache.
To clear the cache while browsing, select Options > Other options > Clear the cache.
Certificates
There are three kinds of certificates—server, authority, and user.
Certificates have a restricted lifetime. If Expired certificate or Certificate not valid
yet is shown even though the certificate should be valid, check that the current date
and time settings 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.
SERVER CERTIFICATES
The phone uses a server certificate to create a connection with improved security
between the phone and the content server. The phone receives the server certificate
from the service provider before the connection is established. The validity of the server
certificate is checked using the authority certificates saved in the phone. Server
certificates are not saved.
AUTHORITY CERTIFICATES
Authority certificates are used by some services, such as banking, for checking the
validity of other certificates. Authority certificates can be 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.
To view authority certificates, select Web > Settings > Security settings > Authority
certificates > Certificate list, scroll to the desired certificate, and select View.
Nokia 7270 User Guide
87
Mobile Internet services
is shown.
Copyright © 2004 Nokia
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