Method for managing purchase of broadcast digital contents and means for downloading same
First Claim
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1. Method for managing purchase of digital contents comprising the steps consisting for a terminal in:
- a) receiving a digital content broadcast by broadcasting means;
b) generating a purchase order for said content;
c) transmitting said purchase order to means for processing the order; and
d) downloading said content from said processing means;
the method also comprising, before the download step, a step of payment for said content after which the terminal receives from said processing means a download ticket, said download ticket containing information used by the terminal to download the content in step d), wherein said download ticket comprises a seed to generate, with the aid of a pseudo-random generator using it as input variable, a pseudo-random key and in that the method also comprises the steps of;
generation by the terminal of said pseudo-random key based on the seed contained in the received download ticket; and
of decipherment, with the aid of the pseudo-random key, of the digital content received in the downloading step d).
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Abstract
The invention concerns a method for managing purchase of digital contents comprising steps which consist in: at a terminal level, a) receiving a digital content broadcast by broadcasting means; b) generating a content purchase order; c) transmitting the purchase order to means for processing the order; d) downloading the content from the processing means. The method further comprises, between steps c) and d) a content payment step at the end of which the terminal receives from the processing means a downloading ticket containing data used by the terminal for downloading the content at step d).
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Citations
13 Claims
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1. Method for managing purchase of digital contents comprising the steps consisting for a terminal in:
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a) receiving a digital content broadcast by broadcasting means;
b) generating a purchase order for said content;
c) transmitting said purchase order to means for processing the order; and
d) downloading said content from said processing means;
the method also comprising, before the download step, a step of payment for said content after which the terminal receives from said processing means a download ticket, said download ticket containing information used by the terminal to download the content in step d), wherein said download ticket comprises a seed to generate, with the aid of a pseudo-random generator using it as input variable, a pseudo-random key and in that the method also comprises the steps of;
generation by the terminal of said pseudo-random key based on the seed contained in the received download ticket; and
ofdecipherment, with the aid of the pseudo-random key, of the digital content received in the downloading step d). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Means for downloading digital contents via a data transmission network, comprising means for receiving a proof of payment of an order to purchase a broadcast digital content, wherein it also comprises means for transmitting this digital content to a terminal sending the proof of payment, said download means being suitable for transmitting the digital content in an encrypted form and also comprising
means for dividing the digital content into a plurality of successive digital sub-contents, means for encoding each of these digital sub-contents and means for successive transmission of these digital sub-contents.
Specification