Digital Signature - Nokia 6500 slide User Manual

Certificates
Important: 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. 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 device are correct.
Before changing any certificate settings, you must make sure that you really
trust the owner of the certificate and that the certificate really belongs to the
listed owner.
There are three kinds of certificates: server certificates, authority certificates,
and user certificates. You may receive these certificates from your service
provider. Authority certificates and user certificates may also be saved in the
security module by the service provider.
To view the list of the authority or user certificates downloaded into your device,
select Menu > Settings > Security > Authority certificates or User certificates.
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 the place where the requested resource is stored) is secure.
The service provider secures the data transmission between the gateway and the
content server.

Digital signature

You can make digital signatures with your phone if your SIM card has a
security module. Using the digital signature can be the same as signing your
name to a paper bill, contract, or other document.
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