Abstract: In a digital resource duplication method, the cloud server executes: a receiving step, for receiving a duplication request for a digital resource submitted by a resource requester, the duplication request comprising the identification information of the resource requester, the unique resource copy identifier, and the unique terminal identifier; a determination step, for determining, on the basis of the identification information, whether the resource requester is allowed to duplicate via the terminal a copy of the digital resource corresponding to the unique resource copy identifier; a transmitting step, for transmitting the copy to the terminal after embedding the unique terminal identifier and the identification information in the copy, when a determination result of the determination step is positive.

Abstract: Disclosed is a method for encrypting a digital file, comprising the following steps: generating, when a user requests to download a specified digital file, a key, according to inherent information of the user, inherent information of a client terminal used by the user, and inherent information of the specified digital file; encrypting the specified digital file according to the key that has been generated; and performing decryption according to the key and a corresponding decryption procedure, after an encrypted digital file is downloaded at the client terminal used by the user. The technical solution allows dynamic generation of one key each time the digital file is downloaded, thereby truly realizing “one user, one machine, and one copy of the digital file.

Abstract: A digital resources publication and distribution method comprises: a receiving step, for receiving the content information of digital resources to be distributed and the corresponding distributing quantity; a generation step, for generating as many unique copy identifiers as the distributing quantity; a determination step for determining, when a resource requester attempts to obtain the rights to use a first specified number of copies of the digital resources, whether the number of the unique copy identifiers not yet allocated among the unique copy identifiers of the distributing quantity is larger than or equal to the first specified number; an allocation step, for, when the determination result is positive, allocating to the resource requester the first specified number of unique copy identifiers from the unique copy identifiers not yet allocated, so that the resource requester has the rights to use the first specified number of copies of the digital resources.

Abstract: Disclosed is a method for encrypting a digital file, comprising the following steps: generating, when a user requests to download a specified digital file, a key, according to inherent information of the user, inherent information of a client terminal used by the user, and inherent information of the specified digital file; encrypting the specified digital file according to the key that has been generated; and performing decryption according to the key and a corresponding decryption procedure, after an encrypted digital file is downloaded at the client terminal used by the user. The technical solution allows dynamic generation of one key each time the digital file is downloaded, thereby truly realizing “one user, one machine, and one copy of the digital file.

Abstract: In a digital resource duplication method, the cloud server executes: a receiving step, for receiving a duplication request for a digital resource submitted by a resource requester, the duplication request comprising the identification information of the resource requester, the unique resource copy identifier, and the unique terminal identifier; a determination step, for determining, on the basis of the identification information, whether the resource requester is allowed to duplicate via the terminal a copy of the digital resource corresponding to the unique resource copy identifier; a transmitting step, for transmitting the copy to the terminal after embedding the unique terminal identifier and the identification information in the copy, when a determination result of the determination step is positive.

Abstract: The present disclosure discloses a network system based on digital resources and an application method thereof, and the network system comprises: a storage module, used for storing digital resources; a search module, used for searching in said storage module, according to a search instruction of a first user, digital resources other users have shared; an establishment module, used for establishing, according to an association establishing instruction of the first user, associations between said first user and other users who have purchased, borrowed, and/or collected said digital resources for which said first user has searched; and a borrowing module, used for borrowing, by said first user, use rights of the digital resources from other users with whom said associations have been established. Social networks in which associations among users can be established based on digital resources are realized by the present disclosure.

Abstract: A method for managing digital resources includes receiving a request submitted by a resource requester for obtaining an authorization to use a specified number of copies of a digital resource. The request includes a use authorization type, ID information of the resource requester, and a digital resource identifier. The method also includes determining based on the ID information whether the resource requester is allowed to obtain the specified number of copies. When the determination results are positive, the specified number of copies is distributed to the resource requester.