A licensable developers toolkit providing efficient cryptographic functions for integration into software applications to meet your individual data security requirements. The cryptographic algorithm employed is the Data Encryption Stamdard (DES) as defined by the US Bureau of Standards (FIPS PUB 46, 1977). The software tools are designed for OEM use and are available for a wide range of target platform environments. Developers require no cryptographic background to incorporate privacy and authentication services into their applications. Suitable for amultitude of potential applications, e.g. electronic funds transfer, electronic banking, secure E-mail, disk and file encryption, network user authentication, secure software distribution, etc.