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Menu functions
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Menu functions
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