Справочник Пользователя для Microsoft Corporation RM-69

Note: 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 

 or 

 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.

You can make digital signatures with your device if your SIM card has a 
security module. The signature can be traced back to you by 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. See 
”Security module” on page 87.

To make a digital signature, select a link on a page, such as the title of 
the book that you want to buy and its price. The text to sign [possibly 
including amount, date, etc.] will be shown.

Check that the header text is 

 and that the digital signature icon 

 is shown.

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; and then you can select 

.

The text may not fit within a single screen. Therefore, make sure to scroll 
through and read all of the text before signing.