Digital Signature - Nokia 7380 User Manual

Important: Even if the use
of certificates makes the
risks involved in remote
connections and software
installation considerably
smaller, they must be used
correctly in order to
benefit from increased
security. The existence of a
certificate does not offer
any protection by itself;
the certificate manager
must contain correct,
authentic, or trusted
certificates for increased
security to be available.
Certificates have a
restricted lifetime. If
Expired certificate or
Certificate not valid yet is
shown even if the
certificate should be valid,
check that the current
date and time in your
device are correct.
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.
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Copyright © 2005 Nokia. All rights reserved.

Digital signature

You can make digital signatures
with your phone if your SIM card
has a security module. The
signature can be traced back to
you using 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 that you want to
buy and its price. The text to sign
(for example, amount, and date) is
shown.
Check that the header text is
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, then 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.
Read