Protection of the distribution of digital documents in a peer to peer network
First Claim
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1. A central server in a network of the hybrid peer to peer type comprising:
- means for receiving a request from a client for obtaining a digital document by that client, said request containing a reference of said document;
means for selecting a peer system of the network likely to contain said document;
means for generating an access key for controlling access to the document by said client, said means for generating the access key being adapted to generate said access key by an encrypting method using a private key of said central server, the time and the address of said client on the network; and
means for sending a message to the client, comprising the reference, the address of the peer system on the network and the access key.
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Abstract
This method of distributing a document comprises: a step of receiving a request for obtaining the document; a step of controlling the access rights to the document; the distribution of the document if it is available locally and access thereto is authorized; and the sending of the address of a second system likely to contain this document in the contrary case.
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Citations
31 Claims
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1. A central server in a network of the hybrid peer to peer type comprising:
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means for receiving a request from a client for obtaining a digital document by that client, said request containing a reference of said document;
means for selecting a peer system of the network likely to contain said document;
means for generating an access key for controlling access to the document by said client, said means for generating the access key being adapted to generate said access key by an encrypting method using a private key of said central server, the time and the address of said client on the network; and
means for sending a message to the client, comprising the reference, the address of the peer system on the network and the access key. - View Dependent Claims (2, 3, 4)
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5. A method of protecting the distribution of a digital document, this protection method being able to be implemented in a central server of a network of the hybrid peer to peer type and comprising:
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a step of receiving a request from a client for obtaining a document by that client, said request comprising a reference of said document;
a step of selecting a peer system of said network likely to contain said document;
a step of generating an access key for controlling access to the document by the client, said step of generating the access key, comprising a generation of said key by an encrypting method using a private key of said central server, the time and the address of said client on the network;
a step of sending a message to said client, comprising said reference, the address of said peer system on said network and said access key. - View Dependent Claims (6, 7, 8)
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9. A system in a network comprising:
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means for receiving a request from a client for obtaining a digital document for that client;
means for obtaining an address of at least one second system likely to contain said document;
means for comparing at least one attribute of said system with at least one corresponding attribute of said at least one second system; and
means for sending said address of said at least one second system to said client according to a result supplied by said comparison means. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of distributing a digital document able to be used in a system of a network, comprising
a step of receiving a request, from a client, for obtaining said document for said client; -
a step of obtaining the address of at least one second system likely to contain said document;
a step of comparing at least one attribute of said system with at least one corresponding attribute of said at least one second system; and
a step of sending said address of said at least one second system to said client according to a result of said comparison step. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification