Security software company Cylink Corp has received a fillip with licensing deals struck with Microsoft Corp and Sun Microsystems Inc. Microsoft is taking Cylink’s cryptographic software for inclusion in forthcoming releases of Internet Explorer and version 5.0 of Windows NT Cylink’s software is based on Diffie- Hellman and Digital Signature Standard (DSS) public key cryptography and will be incorporated into Microsoft’s CryptoAPI architecture. Sun has tapped Cylink’s X.509 certificate technology for inclusion in the next version of its Java Development Kit (JDK). The X.509 version 3 digital certificates, which have been through ISO and ANSI standards processes and are being considered by the Internet Engineering Task Force (IETF), will give Java a stronger authentication system. As part of the Microsoft deal, Cylink become a trusted third-party Crypto service provider, holding the keys. The news was good for a $2.5625, or 22.8% hike in Sunnyvale, California-based shares, to close at $13.1875.