Digital Signature - Nokia 6100 - Cell Phone 725 KB User Manual

• Server certificates
A server certificate is sent from the WAP server to the phone and its validity is checked using the
authority certificates saved in the phone or the security module. The phone indicates 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 correct authority certificate in your phone.
The security indicator
the phone and the WAP gateway or WAP server (identified by the
service settings) is encrypted.
It is up to the service provider to secure the data transmission between the gateway and the
content server.
• Authority certificates
Authority certificates are used by some WAP services, such as banking services, for checking
signatures of server certificates or other authority certificates.
• 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 are used for digital signature.

Digital signature

You can make digital signatures with your phone. The signature can be traced back to you via the user
certificate that was used to perform the signature. Making the digital signature can be the same as
signing your name to a paper bill, contract or other document.
For issuing a digital signature, select a link on a WAP page, for example, the title of the book you want
to buy and its price. The text to sign, possibly including amount and date, for example, will be shown.
is displayed during a WAP connection, if the data transmission between
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IP address in the Edit active
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