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secret. The phone shows a confirmation of your purchase, the digital signature icon will disappear, and
you can continue browsing or end the WAP connection.
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.
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 on your phone.
• Authority certificates
Authority certificates are used by some WAP services, such as banking services, for checking
signatures, 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 on the phone. Authority certificates may also be
available in the security module.
• User certificates
User certificates are issued to users by a Certifying Authority, for example, a bank. 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.