CYLINK UNVEILS WORLD'S FASTEST LAN/WAN DATA ENCRYPTION SYSTEM

Secures enterprise-wide broadband backbones

June 5, 1995 -- Washington, D.C. -- Cylink Corporation today increased the
level of security available for Tl and T3 LAN /WANs with its introduction
of the first point-to-point digital, bulk encryption system built on a
high speed serial interface (HSSI).

Designed to encrypt data running at speeds between 1.5 million bps (Tl) and
45 million bps (T3), Cylink's new CIDEC-VHS/HSSI is the fastest encryptor
in the world. The new system uses the government-endorsed DES encryption
algorithm and the Diffie-Hellman public key management system to provide a
fully electronic key management system that requires no operator
intervention.

"Until now, network managers had very little confidence in the security of
the data flowing over the highest speed, most expensive and most often
used digital pipes in their enterprise backbones. CIDEC-VHS/HSSI was
designed specifically to protect what has become the most vulnerable links
in high speed LAN and WAN internetworking environments," said David
Morris, Cylink's Vice President, Marketing.

The device's very high speed capability provides one HSSI connection to
high speed routers or hubs and a second HSSI connection to high speed
switches, multiplexers or DSUs. The system is fully automatic and
self-synchronizing, requiring no operator input for key loading, key
changes, power outage recovery or recovery from other common network
problems.

An encryptor sits between the router and the switch, multiplexer or DSU at
each end of the circuit. Once the two encryptors establish the secure
link, data is encrypted, passes through the link, then decrypted at the
other end.

CIDEC-VHS/HSSI is list priced at $29,950 and is available immediately.

Cylink Corporation provides internetworking leadership through its
innovative, state-of-the-art Enterprise Security Architecture and advanced
spread spectrum radio technologies. Headquartered in Sunnyvale, CA, Cylink
serves Fortune 500 companies, multinational financial institutions and
many international government agencies.

CYLINK
910 Hermosa Court
Sunnyvale, CA 94086
408/735-5800,   FAX 408/735-6643

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