초록 ▼

A secured network interface unit (SNIU) for providing multi-level security on a network having a plurality of secured and unsecured users including: network interface means for communicating on the network; identifying the source and destination of a message intercepted on the network; determining t

A secured network interface unit (SNIU) for providing multi-level security on a network having a plurality of secured and unsecured users including: network interface means for communicating on the network; identifying the source and destination of a message intercepted on the network; determining the security levels of each of the plurality of users; a trusted computing base for determining whether the message, if transmitted to the destination user, will violate security parameters; and, cryptographically encrypting messages sent to, and decrypting messages received from another SNIU affiliated with the destination user.

대표청구항 ▼

[ What is claimed is:] [1.] A secured network interface unit (SNIU) for providing multi-level security on a network having a plurality of secured and unsecured users comprising:network interface means for communicating with other SNIUs, and intercepting and retransmitting packets on said network, wh

[ What is claimed is:] [1.] A secured network interface unit (SNIU) for providing multi-level security on a network having a plurality of secured and unsecured users comprising:network interface means for communicating with other SNIUs, and intercepting and retransmitting packets on said network, wherein said packets correspond to a message sent between a source and destination user, both selected from said plurality of secured and unsecured users;means for identifying said source and destination users;associating means for dynamically determining whether another SNIU is affiliated with said destination user, and dynamically creating an association with said other SNIU if one does not already exist; said association including security and encryption data relating to both said source and destination users;a trusted computing base for determining whether said message, if retransmitted to said destination user, will violate security parameters; and,cryptographic means for encrypting messages sent to, and decrypting messages received from said other SNIU affiliated with said destination user.