Digital content distribution using web broadcasting services

• US 20060053077A1
• Filed: 10/14/2005
• Published: 03/09/2006
• Est. Priority Date: 12/09/1999
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Pacifici, Giovanni, Munson, Jonathan P., Tantawy, Ahmed, Mourad, Magda, Youssef, Alaa S.
• Granted Patent: US 7,277,870 B2
• Time in Patent Office: Days
• US Class Current: 705/51
• CPC Class Codes: G06F 16/958 Organisation or management of web site content, e.g. publishing, maintaining pages or automatic linking
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06Q 20/382 insuring higher security of transaction
• CPC Class Codes: G06Q 20/3821 Electronic credentials

Abstract

A method of securely receiving data on a user'"'"'s system from a web broadcast infrastructure with a plurality of channels. The method comprising receiving promotional metadata from a first web broadcast channel, the promotional metadata related to data available for reception; assembling at least part of the promotional metadata into a promotional offering for review by a user; selecting by a user, data to be received related to the promotional metadata; receiving data from a second web broadcast channel, the data selected from the promotional metadata, and wherein the data has been previously encrypted using a first encrypting key; and receiving the first decrypting key via a computer readable medium, the first decrypting key for decrypting at least some of the data received via the second web broadcast channel. In another embodiment, a method and system to transmit data securely from a web broadcast center is disclosed.

Claims

1. A method of securely providing content data to a user'"'"'s system over a web broadcast infrastructure with a plurality of channels, the method comprising the steps of:

encrypting content data using a first encrypting key to form encrypted content data, wherein the first encrypting key is a symmetric key with a corresponding first decrypting key;

encrypting the first decrypting key, using a second encrypting key of a trusted third party;

broadcasting promotional metadata related to at least part of the encrypted content data on a first web broadcast channel for reception by at least one user'"'"'s system;

transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key, to the user'"'"'s system via a computer readable medium;

transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key to the trusted third party;

receiving the encrypted first decrypting key, which has been decrypted by the trusted third party and re-encrypted with a user'"'"'s system key; and

decrypting, on the user'"'"'s system in a tamper resistant environment, the encrypted first decrypting key with the user'"'"'s system key.

2. The method as defined in claim 1, wherein the step of broadcasting the promotional metadata includes broadcasting the promotional metadata periodically over a predetermined time interval.

3. The method as defined in claim 1, wherein the step of broadcasting the promotional metadata includes the sub-step of:

converting at least the promotional metadata into a format readable by a web browser.

4. The method as defined in claim 1, wherein the step of sending at least part of the encrypted content data includes broadcasting a schedule of a broadcast time and web broadcast channel for at least part of the encrypted content data.

5. The method as defined in claim 1, wherein the step of sending at least part of the encrypted content data over a second channel includes broadcasting the encrypted content data in a format compatible with DirecPC™

.

6. The method as defined in claim 1, wherein the promotional metadata contains a schedule of broadcast times for the encrypted content data.

7. The method as defined in claim 1, wherein the step of broadcasting promotional metadata, includes broadcasting promotional metadata along with a network address of the trusted third party.

8. The method defined in claim 1, wherein the first decrypting key has a timeout provision for decrypting the content data.

9. A system for securely providing content data to a user'"'"'s system over a web broadcast infrastructure with a plurality of channels, the system comprising:

a content system;

a first public key;

a first private key, which corresponds to the first public key;

a data encrypting key;

a data decrypting key for decrypting data encrypted using the data encrypting key, wherein the first encrypting key is a symmetric key with a corresponding first decrypting key;

first data encryption means for encrypting data to form encrypted content data so as to be decryptable only by the data decrypting key;

second data encryption means, using the first public key, for encrypting the data decrypting key;

a clearing house;

a broadcast center, for broadcasting to one or more user'"'"'s systems on a first web broadcast channel, promotional metadata related to data being broadcasted on a second web broadcast channel, and sending on the second channel encrypted content data, wherein the second channel is selected from the group consisting of a telecommunications network, a broadcast transmission, and a computer removable storage medium;

at least one user system with a first receiver means for receiving the data decrypting key which has been encrypted;

first transferring means for transferring the data decrypting key which has been encrypted, to the clearing house, wherein the clearingHouse possesses the first private key;

first decrypting means for decrypting the data decrypting key using the first private key;

a second public key of the user'"'"'s system;

a second private key;

which corresponds to the second public key;

re-encryption means for re-encrypting the data decrypting key using the second public key;

second transferring means for transferring the re-encrypted data decrypting key to the user'"'"'s system, wherein the user'"'"'s system possesses the second private key;

second decrypting means for decrypting the re-encrypted data decrypting key using the second private key; and

decrypting, on the user'"'"'s system in a tamper resistant environment, the encrypted data decrypting key-with the first private key.

10. The system as defined in claim 9, wherein the promotional metadata contains a schedule of broadcast times for the data.

11. A computer program product for securely providing content data to a user'"'"'s system over a web broadcast infrastructure with a plurality of channels, the computer program product comprising:

a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising;

encrypting content data using a first encrypting key to form encrypted content data, wherein the first encrypting key is a symmetric key, with a corresponding first decrypting key;

encrypting the first decrypting key, using a second encrypting key;

broadcasting promotional metadata related to at least part of the encrypted content data on a first web broadcast channel for reception by at least one user'"'"'s system;

sending at least part of the encrypted content data over a second channel;

transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key of a trusted third party, to the user'"'"'s system via a computer readable medium;

transferring the encrypted first decrypting key, which has been encrypted with the second encrypting key to the trusted third party;

receiving the encrypted first decrypting key, which has been decrypted by the trusted third party and re-encrypted with a user'"'"'s system key; and

decrypting, on the user'"'"'s system in a tamper resistant environment, the encrypted first decrypting key with user'"'"'s system key.