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Browser security, Certificates, Digital signature – Nokia 5310 User Manual

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phone activates the browser only after you select Retrieve when the phone has

received a service message.

Browser security

Security features may be required for some services, such as online banking or shopping.

For such connections you need security certificates and possibly a security module,

which may be available on your SIM card. For more information, contact your service

provider.
To view or change the security module settings, select Menu > Settings > Security >

Security module sett..

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.
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 your service

provider.
To view the list of the authority or user certificates downloaded to your phone, select

Menu > Settings > Security > Authority certificates or User certificates.
During a connection if the data transmission between the phone and the content server
is encrypted,

is displayed.

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.

Digital signature

You can create digital signatures with your phone if your SIM card has a security module.

The digital signature is the same as signing your name to a paper bill, contract, or other

document.
To create a digital signature, select a link on a page, for example, the title of the book

you want to buy and its price. The text to be signed is shown and may include the

amount and date.

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