Nokia 6230 - Page 78

Menu functions
78 Copyright © 2004 Nokia. All rights reserved.
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. Enter the
current module PIN code, then
enter the new code twice.
• Change signing PIN. Select the
signing PIN you want to change.
Enter the current PIN code, then
enter the new code twice.
See also ”Access codes” on page 7.
Certificates
There are three kinds of certificates:
server certificates, authority
certificates and user certificates.
• The phone uses a server
certificate to create a connection
with improved security to the
content server. The phone
receives the server certificate
from the service provider before
the connection is established and
its validity is checked using the
authority certificates saved in the
phone. Server certificates are not
saved.
The security indicator is
displayed during a connection, if
the data transmission between
the phone and the content server
is encrypted.
• Authority certificates are used by
some services, such as banking
services, for checking the validity
of other certificates. Authority
certificates can either 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.
• User certificates are issued to
users by a Certifying Authority.
User certificates are required, for
example, to make a digital
signature and they associate the
user with a specific private key in
a security module.
Important: Note, however,
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.
Important: 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.
Nokia_6230_APAC_UG_en.fm Page 78 Thursday, December 16, 2004 5:16 PM