Nokia 6233 User Manual

Also see for 6233 - Cell Phone 6 MB: Specification sheet User guide User guide Service manual User guide

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Nokia 6233 User Manual Manual pdf 89 page image

W e b76 Copyright © 2006 Nokia. All rights reserved.There are three kinds of certificates:server certificates, authoritycertificates, and user certificates.You may receive these certificatesfrom your service provider. Authoritycertificates and user certificates mayalso be saved in the security moduleby the service provider.To view the list of the authority oruser certificates downloaded intoyour phone, select Menu >Settings > Security > Authoritycertificates or User certificates.is displayed during aconnection, if the data transmissionbetween the phone and the contentserver is encrypted.The security icon does not indicatethat the data transmission betweenthe gateway and the content server(or place where the requestedresource is stored) is secure. Theservice provider secures the datatransmission between the gatewayand the content server.Digital signatureYou can make digital signatures withyour phone if your SIM card has asecurity module. Using the digitalsignature can be the same as signingyour name to a paper bill, contract,or other document.To make a digital signature, select alink on a page, for example, the titleof the book you want to buy and itsprice. The text to sign is shown,which may include the amount anddate.Check that the header text is Readand that the digital signature iconis shown.If the digital signature icon does notappear, there is a security breach,and you should not enter anypersonal data such as your signingPIN.To sign the text, read all of the textfirst, and select Sign.The text may not fit within a singlescreen. Therefore, make sure to scrollthrough and read all of the textbefore signing.Select the user certificate you wantto use. Enter the signing PIN (see”Access codes” p. x), and select OK.The digital signature icondisappears, and the service maydisplay a confirmation of yourpurchase.