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75Copyright © 2005 Nokia. All rights reserved.
• 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 that you want to change. Enter the
current PIN code, then enter the new code twice.
See also “Access codes,“ p. 13.
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.
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.
• Authority certificates are used by some services, such as banking, 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.