Nokia 7380 User Manual

Also see for 7380 - Cell Phone 52 MB: User guide Quick start guide User guide Service manual

Contents

Nokia 7380 User Manual Manual pdf 66 page image

66 Copyright © 2005 Nokia. All rights reserved.Important: Even if the useof certificates makes therisks involved in remoteconnections and softwareinstallation considerablysmaller, they must be usedcorrectly in order tobenefit from increasedsecurity. The existence of acertificate does not offerany protection by itself;the certificate managermust contain correct,authentic, or trustedcertificates for increasedsecurity to be available.Certificates have arestricted lifetime. IfExpired certificate orCertificate not valid yet isshown even if thecertificate should be valid,check that the currentdate and time in yourdevice are correct.Before changing anycertificate settings, youmust make sure that youreally trust the owner ofthe certificate and thatthe certificate reallybelongs to the listedowner.Digital signatureYou can make digital signatureswith your phone if your SIM cardhas a security module. Thesignature can be traced back toyou using the private key on thesecurity module and the usercertificate that was used toperform the signature. Using thedigital signature can be the sameas signing your name to a paperbill, contract, or other document.To make a digital signature, selecta link on a page, for example, thetitle of the book that you want tobuy and its price. The text to sign(for example, amount, and date) isshown.Check that the header text is Readand that the digital signature iconis shown.Note: If the digitalsignature icon does notappear, there is a securitybreach, and you shouldnot enter any personaldata such as your signingPIN.To sign the text, read all of the textfirst, then select Sign.The text may not fit within a singlescreen. Therefore, make sure toscroll through and read all of thetext before signing.