| 摘要 |
PROBLEM TO BE SOLVED: To provide a protocol stack capable of further improving a function of preventing leakage of data, falsification and spoofing of data, invasion, and attack without modifying high-order application programs. SOLUTION: The communication system includes at least a protocol encrypting means for encrypting a payload of a protocol corresponding to at least TCP or UDP out of information units, such as packets to be input/output or transmitted/received in accordance with a predetermined encryption logic, and outputting or transmitting the encrypted payload; and a protocol decrypting means for decrypting the encrypted protocol inputted or received, in accordance with a predetermined decryption logic. COPYRIGHT: (C)2008,JPO&INPIT
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