Cipher method and system for multicast service

The invention provides a cipher method and system for multicast service. A group includes a plurality of user equipments, each having a respective key, and every two keys are orthogonal with each other. A content provider provides a message to the user equipments in the group. A BM-SC server has a k...

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Hauptverfasser:	TSAO, SHIAO-LI, HSU, YUING, LIN, CHIAIN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADVERTISING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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creator	TSAO, SHIAO-LI HSU, YUING LIN, CHIAIN
description	The invention provides a cipher method and system for multicast service. A group includes a plurality of user equipments, each having a respective key, and every two keys are orthogonal with each other. A content provider provides a message to the user equipments in the group. A BM-SC server has a key set composed of the keys of all user equipments in the group to encipher the message for being broadcasted. The user equipments in the group receive and decipher the enciphered message with respective keys.
format	Patent
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language	chi ; eng
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subjects	ADVERTISING CODING OR CIPHERING APPARATUS FOR CRYPTOGRAPHIC OR OTHERPURPOSES INVOLVING THE NEED FOR SECRECY CRYPTOGRAPHY DISPLAY EDUCATION ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY PHYSICS SEALS TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
title	Cipher method and system for multicast service
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