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Nokia: Finland's Virve Inaugurates Two Tetra Features

时间:2003-01-09 21:29来源:未知 作者:陈晓亮 点击:
Dow Jones Nokia Corp. of Finland Thursday said two of its high-security Tetra features have been inaugurated by Finnish public safety network Virve. Virve is the first to put Tetra Authentication and Air Interface Encryption into operation
Dow Jones

Nokia Corp. of Finland Thursday said two of its high-security Tetra features
have been inaugurated by Finnish public safety network Virve.

Virve is the first to put Tetra Authentication and Air Interface Encryption
into operation.

Nokia said this is an important milestone in Finland's Virve public safety
network, with two high-security features, Authentication and Air Interface
Encryption brought into operational use and exactly on schedule.

The Authentication and Air Interface Encryption features in Nokia's digital
Tetra system use dynamic encryption keys, to protect the network from
unauthorized radio users and make eavesdropping impossible. In tetra
Authentication, the system checks that a radio terminal is authentic and not an
illegal clone, thus preventing unauthorized radio users from accessing the
system and its services.

Tetra Air Interface Encryption hides the contents of the calls and messages
that are transmitted on the radio path. The signaling and coded speech sent on
the radio path are ciphered using encryption keys and an encryption algorithm.
Only authorized recipients have the cipher keys and only they can decode the
encrypted speech and signaling. Tetra Air Interface Encryption protects the
network against eavesdropping, analysis of traffic patterns, and unauthorized
use.
 

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