Authentication of content download

• US 20050125660A1
• Filed: 09/07/2004
• Published: 06/09/2005
• Est. Priority Date: 07/28/2003
• Status: Active Grant

• Current Assignee: Limelight Networks, Inc.
• Original Assignee: Limelight Networks, Inc.
• Inventors: Raciborski, Nathan F.
• Granted Patent: US 7,536,725 B2
• Time in Patent Office: Days
• US Class Current: 713/161
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/123 received data contents, e.g. message integrity
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]

Abstract

According to the invention, a method for authenticating download of a number of digital content files ordered from a web site is disclosed. In one step, a selection of the digital content files is received with the web site. Download manager software, media information, the digital content files, and first codes for each of the digital content files are sent to the client computer. The media information indicates a location of each of the number of digital content files. A first code is calculated for each of the digital content files. If the client computer determines that the first code doesn'"'"'t match a second code for a particular digital content file, it is resent.

Claims

1. A method for authenticating download of a digital content file ordered from a web site, the method comprising:

receiving a selection of the digital content file with the web site;

calculating a first code indicative of the digital content file, wherein if the digital content file is changed, the first code is likely to also change;

sending the digital content file to a client computer;

sending the first code to the client computer; and

re-sending the digital content file if the client computer determines the first code doesn'"'"'t match a second code calculated by the client computer after the client computer received the digital content file.

2. The method for authenticating download of the digital content file ordered from the web site as recited in claim 1, further comprising steps of performing the preceding steps for each of plurality of digital content files, wherein the digital content file is one of the plurality.

3. The method for authenticating download of the digital content file ordered from the web site as recited in claim 1, further comprising a step of sending download manager software to the client computer.

4. The method for authenticating download of the digital content file ordered from the web site as recited in claim 1, wherein the first code is embedded in the digital file.

5. The method for authenticating download of the digital content file ordered from the web site as recited in claim 1, wherein the calculating step includes a step of performing at least one of a cyclical redundancy check (CRC), a hash, a checksum, and a decryption.

6. A computer-readable medium having computer-executable instructions for performing the computer-implementable method for authenticating download of the digital content file ordered from the web site of claim 1.

7. A computer system adapted to perform the computer-implementable method for authenticating download of the digital content file ordered from the web site of claim 1.

8. A method for authenticating download of a digital content file ordered from a web site, the method comprising:

indicating selection of the digital content file to the web site;

receiving the digital content file from a point away from a client computer;

receiving a first code indicative of the digital content file, wherein if the digital content file is changed, the first code is likely to also change;

calculating a second code with the digital content file;

checking if the second code corresponds to the first code;

determining a failed download should the checking step fail; and

receiving the digital content file again if the checking step fails.

9. The method for authenticating download of the digital content file ordered from the web site as recited in claim as recited in claim 8, further comprising a step of storing the digital content file before the calculating step.

10. The method for authenticating download of the digital content file ordered from the web site as recited in claim as recited in claim 8, wherein the checking step is performed at a location away from the client computer.

11. The method for authenticating download of the digital content file ordered from the web site as recited in claim as recited in claim 8, further comprising steps of:

indicating to a user that the checking step failed; and

asking the user if the requesting step should be performed.

12. The method for authenticating download of the digital content file ordered from the web site as recited in claim as recited in claim 8, further comprising a step of reporting where the digital content file was stored to a location away from the client computer.

13. The method for authenticating download of the digital content file ordered from the web site as recited in claim as recited in claim 8, further comprising steps of:

storing the digital content file with a file name at a path on a drive of a computer; and

comprising a step of reporting at least one of the file name, the path, the drive, and the computer to the location.

14. A computer-readable medium having computer-executable instructions for performing the computer-implementable method for authenticating download of the digital content file ordered from the web site of claim 8.

15. A computer system adapted to perform the computer-implementable method for authenticating download of the digital content file ordered from the web site of claim 8.

16. A method for authenticating download of a plurality of digital content files ordered from a web site, the method comprising:

receiving a selection of the plurality with the web site;

sending download manager software to the client computer;

sending media information to the client computer, wherein the media information indicates a location of each of the plurality;

calculating a first code for each of the plurality;

sending each of the plurality to a client computer;

sending each of the first codes to the client computer; and

re-sending any of plurality if the client computer determines that the first code doesn'"'"'t match a second code for a particular digital content file that is part of the plurality.

17. The method for authenticating download of the plurality of digital content files ordered from the web site as recited in claim 16, wherein the first code for each of the plurality is likely to change if the respective digital content file changes.

18. The method for authenticating download of the plurality of digital content files ordered from the web site as recited in claim 16, wherein the first two listed sending steps send the download manager software and the media information together in the same file.

19. The method for authenticating download of the plurality of digital content files ordered from the web site as recited in claim 16, wherein the first and the fourth listed sending steps send the download manager software and the first codes together in the same file.

20. The method for authenticating download of the plurality of digital content files ordered from the web site as recited in claim 16, wherein the first code for each of the plurality is sent separately each of the plurality.

21. A computer-readable medium having computer-executable instructions for performing the computer-implementable method for authenticating download of the plurality of digital content files ordered from the web site of claim 16.

22. A computer system adapted to perform the computer-implementable method for authenticating download of the plurality of digital content files ordered from the web site of claim 16.