The Internet protocols that handle the connection, its transport and its security are structured in protocol layers. The security is handled by the TLS layer operating above the transport protocol layer. There are three TLS classes that define the levels of security for a TLS connection:
•Anonymous TLS involves encryption with no authentication.
•Server authentication involves encryption with server authentication.
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Server | Requires a server certificate |
authentication | stored at the server side and a |
| trusted certificate stored at the |
| client side. |
|
|
Client | Requires a client certificate |
authentication | stored at the client side and a |
| trusted certificate stored at the |
| server side. |
|
|
White paper Sony Ericsson P1
Certificates
To use secure connections, the user needs to have certificates saved in the phone. Certificates can be downloaded and installed when required. There are two types of certificates:
Certificate | A trusted certificate used to |
authority | verify that a Web site is genuine. |
| If the phone has a stored |
| trusted certificate of a certain |
| type, it means the user can trust |
| all Web sites which present a |
| certificate that can be verified |
| by the trusted certificate. |
| Certificates are preinstalled in |
| the phone and can be |
| downloaded from the trusted |
| supplier's Web page. |
|
|
User | A personal certificate that |
certificate | verifies the user's identity. A |
| bank that the user has a |
| contract with may issue this |
| kind of certificate. |
|
|
Sony Ericsson P1 comes preinstalled with X.509 certificates from Baltimore, Entrust, Geotrust, GlobalSign, GTE Cybertrust, RSA, Sony Ericsson, Thawte and VeriSign.
RSS feeds
RSS provides a way for Web sites to distribute their content outside of a Web browser. A news Web site might have an RSS feed which contains breaking stories, while a magazine Web site may provide an RSS feed with excerpts of their latest articles.
An RSS feed is a file containing a list of news items, each of which has a title, a description and a URL link for more information on the content provider's Web site.
With the RSS Feeds application the user gets information from the Internet into an
– of Web sites without ever visiting them.
RSS Feeds includes the following features:
•Subscription.
•Update feeds manually or via a predefined schedule.
•Organize feeds into folders.
•Read news items.
•Send a news item to another device via an infra- red, WLAN, USB or Bluetooth connection, or via email.
•Link to more information via the Web browser.
35 | May 2007 |
