| 摘要 |
Disclosed is a transaction method including a digital data seller client system, a digital data purchaser client system and a digital data transaction server. The transaction method according to the invention comprises the steps of : inputting digital data including information on a seller, information on digital data, information on transact ional functions, and digital data in the digital data transaction server by the digital data seller client system; publicizing the information on digital data and the information on transactional functions of the digital data on-line by the digital data transaction server; selecting an authenticated function from the information on transactional functions to use the digital data from the digital data transaction server by the digital data purchaser client system; encoding the digital data and a list of authenticated functions and transmitting the same to the digital data purchaser client by the digital data transaction server; and transmitting decoding means for decoding the encoded data to the digital data purchaser client system by the digital data transaction server.
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