Digital signature
You can make digital signatures with your device if your SIM card has a security
module. The signature can be traced back to you by 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. See ”Security module” on page 117.
120
Copyright © 2005 Nokia. All rights reserved.
To make a digital signature, select a link on a page, such as the title of the book
that 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
.
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. Enter the signing PIN, and select
OK
.
The digital signature icon will disappears, and the service may display a
confirmation of your purchase.