Nokia 6220 Cell Phone User Manual


 
Menu functions
Copyright © 2004 Nokia. All rights reserved. 91
Press Menu and select Services,
Settings, Security settings and
Security module settings. Select
Security module details to show
the security module title, its
status, manufacturer and serial
number.
Module PIN request to set the
phone to ask for the module PIN
when using services provided by
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. 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 x.
Certificates
There are three kinds of certificates:
server certificates, authority
certificates and user certificates.
The phone uses a server
certificate to improve security in
connection to between the
phone and the gateway. 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 gateway
(identified by the IP address in
the Edit active service settings) is
encrypted.
However, the security indicator
does not indicate 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
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.