Nokia 6301 User Manual

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Nokia 6301 User Manual Manual pdf 49 page image

trusted certificates for increased security to be available. Certificates have a restrictedlifetime. If "Expired certificate" or "Certificate not valid yet" is shown, even if thecertificate should be valid, check that the current date and time in your device arecorrect.There are three kinds of certificates: server certificates, authority certificates, and usercertificates. You may receive these certificates from your service provider. Authoritycertificates and user certificates may also be saved in the security module by your serviceprovider.To view the list of the authority or user certificates downloaded to your phone, selectMenu > Settings > Security > Authority certificates or User certificates.During a connection if the data transmission between the phone and the content serveris encrypted, is displayed.The security icon does not indicate that the data transmission between the gatewayand the content server (or place where the requested resource is stored) is secure. Theservice provider secures the data transmission between the gateway and the contentserver.Digital signatureYou can create digital signatures with your phone if your SIM card has a security module.The digital signature is the same as signing your name to a paper bill, contract, or otherdocument.To create a digital signature, select a link on a page, for example, the title of the bookyou want to buy and its price. The text to be signed is shown and may include theamount and date.Check that the header text is Read and that the digital signature icon is shown. Ifthe digital signature icon does not appear, there is a security breach; do not enter anypersonal data (such as your signing PIN).To sign the text, read all of the text first, and select Sign. The text may not fit within asingle screen. Therefore, make sure to scroll through and read all of the text beforesigning.Select the user certificate you want to use, and enter the signing PIN. The digitalsignature icon disappears, and the service may display a confirmation of your purchase.17. SIM servicesYour SIM card may provide additional services. You can access this menu only if it issupported by your SIM card. The name and contents of the menu depend on the availableservices.For availability and information on using SIM card services, contact your SIM card vendor.This may be the service provider or other vendor.S I M s e r v i c e s© 2007 Nokia. All rights reserved. 49