Relay device
OwnerKeiko Ogawa, Hirotsugu Ozakiinventors
Life of this patent
Estimating the term…
Abstract
“Leakage”, “falsifying”, “masquerading”, “approach”, or “attack” of data on the Internet are prevented in a communication between a personal computer and the outside thereof without installing software or hardware in the personal computer. An intermediary apparatus includes NIC (Network Interface Card) drivers connected to networks respectively and a network layer and a transport layer which include “TCP/IP” defining a communication method for communicating while carrying out routing (ROUTING) between any two nodes and is provided for a physical layer and a data-link layer including the NIC drivers. Between the data-link layer and network layer, the function of “TCP2” can be provided.
Claims4
An intermediary apparatus used when carrying out communication of computerized information by adding an encryption function to a TCP or UDP protocol positioned in a transport layer, the intermediary apparatus comprising:
- arrangement means for arranging corresponding encryption and decryption logic with an opposite apparatus thereto;
- protocol encryption means for encrypting and transmitting at least a payload of the protocol in packets as information units transmitted and received according to the encryption logic arranged by the arrangement means;
- and
- protocol decryption means for decrypting the received encrypted payload of the TCP or UDP protocol according to the decryption logic arranged by the arrangement means, wherein
- communication is carried out based on the encryption and decryption logic using the TCP or UDP protocol of the transport layer.
Dependencies are inferred from the claim text.