The NSK Secure Phone System

NSK 200 Secure Phone System

KDC - Crypto Department - NC3A June 18, 2002

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Kongsberg Defence & Aerospace

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NSK 200 Secure Telephone System

Basics principles & technologyProduct RangeDifferent schemes and operation modes

Key ManagementHow to useCommunications modesEncrypted File TransferCustomersPrices

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End-to-end encryption

Basics Principles & Technology

The GSM system provides built-in encryption but:

— Only parts of the communication channel are encrypted

—The network operator may disable even this encryption

—The GSM crypto algorithm is cracked

—Intercepting equipment is commercially available

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Basics Principles & Technology …..

Makes use of existing infrastructure; GSM network, terrestrial network (PSTN), satellite systems.

Ordinary subscriptions (Requires separate data number on the GSM subscription)

Plain-text calls are made through the ordinary voice service

Encrypted calls are made through the transparent data service

Connectivity:

— GSM voice and data (Plain and encrypted)

— DECT voice and data (Plain and encrypted)

— Compatible with NERA WorldCommunicator satellite modem & NERA F77

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Basics Principles & Technology …..

Security:

— EINRIDE algorithm

— SECAN approved up to level ’NATO Secret’

— Key Loading from smart card or EKD (Electronical Key Distribution)

Battery lifetime:

— 72 hours stand-by time

— about 3 hours talk time

Primary users:

— Military Officers

— Politicians

— Official administration

— Industry leaders

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System Components – Product Range

NSK 200 Secure Phone

NSK 250 Security Management Center

NSK 210 Key Generation Center

NSK 201 DECT Adapter

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System Components - Different Schemes

NSK 210

NSK 250

NSK 210 (Off-line) Key Generation Center. Where red keys are generated

NSK 250 (On-line) Security Management Center. For central management of keys and configuration.

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Key Management – Two Possible Modes

With NSK 250 Security Management Center

Centralised client management

Remote deletion of keys

Automatic key and phone book distribution

Handles up to 10.000 phones and 1000 key requests per hour

Manual key management

All phones within one group uses same key

Conveniant for administration of a small number of phones

Without NSK 250 – the Group Key mode

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How To Use?

Any client is given one NSK200 handset and one smart card.

These two objects should be kept apart. Typically, the smart card is stored in the wallet.

Every time the phone is turned on, the smart card is inserted for client authentication

Otherwise, the phone is operated like any other GSM or DECT phone

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NSK 201 Converter

Communication Modes

GSM— Dual band 900/ 1800

DECT— The NSK 201 DECT Adapter is used to connect to the PSTN

— Encrypted calls are done using a modem integrated in the NSK 201

Satellite— Compatible with the NERA terminals WorldCommunicator and F77

— Connects through NSK 201 DECT Adapter and PSTN/ ISDN converter, but direct connectivity is being built into the WorldCommunicator

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Encrypted File Transfer

Encrypted file transfer

IrDA

IrDA

GSM/ PSTN/Satellite...

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Customers

Norway Germany Luxembourg Holland Czech Republic NATO / NC3A

Greece Turkey UK Spain Poland

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Prices

NSK200 – starts at NOK 43 000 / EUR 5 800

NSK201 – NOK 9 000 / EUR 1 200

NSK210 – NOK 120 000 / EUR 16 000

NSK250 – NOK 1 600 000 / EUR 214 000

Need more information? Please, contact:Kongsberg Defence Communications ASErnst [email protected]: + 47 66 84 08 36Mobile: +47 930 48 779