Nokia 6510 User Manual page 68

M e n u f u n c t i o n s
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. Key in the signing PIN and
press OK. Since the PIN code will not
be sent outside the phone, it will
remain secret. The phone displays a
confirmation Code
entered a wrong PIN, an error note
Code error is displayed, and the
phone asks you to key in the PIN
code again. After the confirmation
has been displayed, the digital
signature icon will disappear, and
browsing continues. The WAP
service may display a confirmation
of your purchase.
Certificates
There are three kinds of certificates:
• Server certificates
A server certificate is sent from
the server to the phone and its
validity is checked using the
authority certificates stored in
the phone or the security module.
This process helps to determine
whether a WAP gateway or a
WAP server is the one it claims to
be.
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accepted. If you
Copyright © 2004 Nokia. All rights reserved.
You will see a note on the phone
display if the identity of the WAP
server or WAP gateway cannot be
verified, if the WAP server or WAP
gateway certificate is not
authentic or if you do not have
the right authority certificate in
your phone.
• Authority certificates
Authority certificates are used by
some WAP services, such as
banking services, for checking
signatures or server certificates
or other authority certificates.
You can download the certificate
from a WAP page, if the WAP
service supports the use of
authority certificates. After the
download, you can view the
certificate and then save or
delete it. If you save the
certificate, it is added to the
certificate list in the phone.
Authority certificates may also be
available in the security module.
• User certificates
User certificates are issued to
users by a Certifying Authority.
They associate a user with a
specific private key in a security
module, and they are stored in
the module by the SIM card
issuer or the service provider.