Nokia 6822 User's Card Manual page 88

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Security module details—Show the security module title, status,
manufacturer, and serial number.
Module PIN request—Set the device to request the module PIN when
using services provided by the security module. Enter the code, and
select On. To disable the module PIN request, select Off.
Change module PIN—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.
Certificates
There are three kinds of certificates:
Server certificates—Used by the device to create a connection with
improved security to the content server. The device 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 device. Server certificates are not saved.
The security indicator is displayed during a connection if the data
transmission between the device 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—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—Issued to users by a Certifying Authority. User
certificates are required [for example, to create a digital signature], and
they associate the user with a specific private key on a security module.
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