User password identification for data processing network access - generating multiple-parameter key from single password per user to enable access to many routines

摘要

The data processing network contains a password identification unit. Upon entry of a password, a user is allocated a unique `key' which determines access limits to the network and may be constructed of the following parameters: a mask defining routines to which access is allowed, user network location, entry date, permitted access duration. The identification unit may also encode the `key' for added security. ADVANTAGE - Single password per user for entering several processes. Ease of central password management without affecting network routines. Password identifier and `key' generator protected from tampering. Unused passwords can be set to expire automatically.