Microsoft to Include Cylink Information Security Technology in Internet Explorer 4.0 and Windows NT 5.0; Standards-Based Security Technology to Enable Open and Robust Security for Microsoft's Upcoming Products

Business Wire, Sept 3, 1997

SUNNYVALE, Calif.--(BUSINESS WIRE)--Sept. 3, 1997--Cylink Corporation (NASDAQ:CYLK), a leading provider of information security solutions since 1984, today announced that Microsoft has licensed proposed standards-based security technology from Cylink for inclusion in Microsoft's forthcoming releases of Internet Explorer 4.0 and Windows NT 5.0.

Cylink's information security technology is currently available in the beta version of Microsoft Internet Explorer 4.0.

The software is based on Diffie-Hellman and the Digital Signature Standard (DSS) public-key cryptography, and is implemented as a Crypto Service Provider for Microsoft's CryptoAPI architecture. It offers users of Internet Explorer and Windows NT more choices for maintaining security while sharing information and executing transactions.

"We are pleased that Microsoft has chosen these security solutions, which are the emerging standards in the banking industry, for inclusion in their products," said Fernand B. Sarrat, president and CEO of Cylink. "These technologies are being used successfully by our customers whose demand for comprehensive security solutions is a critical aspect of their business. Now customers of Internet Explorer 4.0 and Windows NT 5.0 will have additional dependable, security solutions for their network-based transactions."

"The Diffie-Hellman and DSS security technology provides our customers with additional strong and reliable security solutions for Internet Explorer 4.0 and Windows NT 5.0 products," according to Mike Nash, Director of Marketing for Windows NT Server Infrastructure at Microsoft Corporation. "The inclusion of these technologies provides our customers with additional means of performing secure transactions when working over the Internet and private networks."

Together, the Diffie-Hellman and Digital Signature Standard algorithms provide a complete solution for public-key based security systems. Diffie-Hellman was developed at Stanford University and is commercially licensed by Cylink. The Diffie-Hellman key management system is also the basis for commercial Elliptic Curve Cryptography solutions developed by Cylink. Diffie-Hellman and DSS based solutions are scalable from smart cards through the largest super-computers and are implemented by the world's largest IT companies.

For more details on Diffie-Hellman and DSS, please refer to the Cylink Web site at http://www.cylink.com .

Cylink Corporation is a leading provider of enterprise-wide network information security solutions and wireless communications. Its security products enable secure transmission of data over networks, including local area networks (LANs), wide area networks (WANs) and public packet switched networks, such as the Internet. Cylink serves Fortune 500 companies, multinational financial institutions, and many international government agencies. For additional product or investor information, visit Cylink's Web site at http://www.cylink.com . -0-

Note to Editors: Except for the historical information contained herein, matters discussed in this release are forward-looking statements that involve risks and uncertainties, and actual results could be materially different. Forward-looking statements include statements regarding Cylink's opportunities with Microsoft Corporation. Factors that could cause actual results to differ include an unexpected decrease or cancellation of orders from Microsoft Corporation and the possible introduction of new technologies and other risk factors listed from time to time in the company's SEC reports, including but not limited to the report on Form 10-K for the year ended December 31, 1996, and its reports on Forms 10-Q and the Annual Report to shareholders.

CONTACT: Cylink Corporation

Gene Carozza, 617/662-4146

carozza@cylink.com

or

Edelman Public Relations Worldwide

Stephen Berger, 415/968-4033

Stephen_Berger@edelman.com