Digital document or data e.g. video, marking method for use in Internet, involves producing electronic signature of characteristic, current time, and identification code, merging signature with data, and providing data over network

摘要

The method involves initializing data by a data provider, and producing a characteristic that refers to the data. An identification code is produced and a current time is provided, where the code identifies the data provider. An electronic signature of the characteristic, current time, and identification code is produced. The signature is merged with the data, and the data is provided over a communication network.