Digital Signature - Nokia 7380 User Manual

The security icon does not indicate that the data transmission between the
gateway and the content server (or place where the requested resource is
stored) is secure. The service provider secures the data transmission between
the gateway and the content server.
• Authority certificates are used by some services, such as banking services, for
checking the validity of other certificates. Authority certificates can either be
saved in the security module by the service provider, or they can be downloaded
from the network, if the service supports the use of authority certificates.
• User certificates are issued to users by a certifying authority. User certificates
are required to create a digital signature, and they associate the user with a
specific private key in a security module.
Important: Even if the use of certificates makes the risks involved in remote
connections and software installation considerably smaller, they must be
used correctly in order to benefit from increased security. The existence
of a certificate does not offer any protection by itself; the certificate
manager must contain correct, authentic, or trusted certificates for
increased security to be available.
Certificates have a restricted lifetime. If Expired certificate or Certificate
not valid yet is shown even if the certificate should be valid, check that
the current date and time in your device are correct.
Before changing any certificate settings, you must make sure that you
really trust the owner of the certificate and that the certificate really
belongs to the listed owner.

Digital signature

You can make digital signatures with your phone if your SIM card has a security
module. The signature can be traced back to you using the private key on the
security module and the user certificate that was used to perform the signature.
Using the digital signature can be the same as signing your name to a paper bill,
contract, or other document.
To make a digital signature, select a link on a page; for example, the title of the
book that you want to buy and its price. The text to sign (for example, amount
and date) is shown.
Check that the header text is
Note: If the digital signature icon does not appear, there is a security breach,
and you should not enter any personal data such as your signing PIN.
To sign the text, read all of the text first, then select Sign.
Read and that the digital signature icon
M e n u f u n c t i o n s
is shown.
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