Nokia 6310i

Page 101
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Menu functions
101
Menu functions
service of your service provider. It can contain certificates, as well as private and public keys to operate 
the certificates. The certificates and keys are stored in the security module by the SIM card issuer or 
service provider.
Digital signature
With the digital signature functionality you can, for example, digitally sign a bill or a financial 
contract. The signature can be traced back to you via the private key and the associated certificate that 
was used to perform the signature, so signing using the digital signature is the same as signing your 
name to a paper bill, contract or other document. 
A digital signature is initiated by a code embedded in a WAP page. See also Access codes on page 14. 
Select a product you want to buy and the digital signature procedure starts and shows the text to sign. 
At this point check that the header text is 
Read
 and the digital signature icon 
 is shown. 
Note: If the digital signature icon does not appear, there is a security breach, and you should 
not enter any personal data such as your signing PIN.
To sign the displayed text, select 
Sign
, after you have read all of the text. 
Note: The text may not fit within a single screen. Therefore, make sure to scroll through and 
read all of the text before signing.
Select the user certificate you want to use. Key in the signing PIN and press 
OK
. Since the PIN code will 
not be sent outside the phone, it will remain secret. The phone displays a confirmation 
Code accepted
. 
If you entered a wrong PIN, an error note 
Code error
 is displayed, and the phone asks you to key in the 
PIN code again. After the confirmation has been displayed, the digital signature icon will disappear, 
and browsing continues. The WAP service may display a confirmation of your purchase.
Certificates
There are three kinds of certificates: 
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