Digital Signature - Nokia 7200 User Manual

M e n u f u n c t i o n s
Press Menu and select Services,
Settings, Security settings
Security module settings.
Select Security module
Module PIN request
to ask for the module PIN when
using services provided by security
module, Change module PIN
change the module PIN, if allowed
by the security module, and
signing PIN.
See also "Access codes"
Certificates
There are three kinds of certificates:
server certificates, authority
certificates and user certificates.
You may receive these certificates
from your service provider. Authority
certificates and user certificates may
also be saved in the security module
by the service provider.
The security indicator
displayed during a connection, if the
data transmission between the
phone and the content server is
encrypted.

Digital signature

You can make digital signatures with
your phone. 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.
62
and
details, and
to set the phone
to
Change
on page viii.
is
Copyright © 2004 Nokia. All rights reserved.
To make a digital signature, select a
link on a page, for example, 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
and that the digital signature icon
is shown. 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 that you want to use. Key
in the signing PIN (see
codes" on page viii) and press OK.
The digital signature icon will
disappear, and the service may
display a confirmation of your
purchase.
Read
"Access