©2001 Nokia Corporation. All rights reserved. 93Menu functionsNote: If the digital signature icon does not appear, this means that there is a security breach,and you should not enter any personal data such as your signing PIN.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 andread 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 willnot be sent outside the phone, it will remain secret. The phone displays a confirmation Code accepted.If you entered a wrong PIN, an error note Code error is displayed, and the phone asks you to key in thePIN code again. After the confirmation has been displayed, the digital signature icon will dissappear,and browsing continues. The WAP service may display a confirmation of your purchase.CertificatesThere are three kinds of certificates:• Server certificatesA server certificate is sent from the server to the phone and its validity is checked using theauthority certificates stored in the phone or the security module. This process helps to determinewhether a WAP gateway or a WAP server is the one it claims to be.You will see a note on the phone display if the identity of the WAP server or WAP gateway cannotbe verified, if the WAP server or WAP gateway certificate is not authentic or if you do not have theright authority certificate in your phone.• Authority certificatesAuthority certificates are used by some WAP services, such as banking services, for checkingsignatures or server certificates or other authority certificates.
