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Copyright © 2004 Nokia. All rights reserved.
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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.
Digital signature
You can make digital signatures with your phone. This feature requires support
from your SIM card. The signature can be traced back to you via the private key on
the security module and the user certificate that was used to perform the
signature. Using the digital signature can be the same as signing your name to a
paper bill, contract or other document.
To make 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 sign (possibly including amount,
date, etc.) will be shown.
Check that the header text is Read and that 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 text, read all of the text first and then you can select Sign.
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 (see
General information on page 14) and press OK. The digital signature icon will
disappear, and the service may display a confirmation of your purchase.