Nokia 8910

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©2002 Nokia Corporation. All rights reserved.
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Security module
The security module provides security services for WAP-related applications and enables digital 
signing. If present, the security module is in the SIM card as an optional service of your service 
provider. The security module helps to prevent the card content from being maliciously read or 
modified. (It can contain certificates, as well as private and public keys to operate the certificates. The 
certificates are stored in the security module by the SIM card issuer or the service provider.)
Digital signature
You can sign, for example, a bill or a financial contract digitally while using WAP. Note that 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. 
When you select a link, for example, the title of the book you want to buy and its price, the digital 
signature procedure starts and shows the text to be signed. At this point the header text is 
Read
 and 
the digital signature icon 
 is shown. 
Note: If the digital signature icon does not appear, this means that 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 in the signing. Key in the signing PIN (supplied by the 
service provider) and press 
OK
. Since the PIN code will not be sent outside the phone, it will remain 
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