CA2674148A1 - Selective and renewable encryption for secure distribution of video on-demand - Google Patents
Selective and renewable encryption for secure distribution of video on-demand Download PDFInfo
- Publication number
- CA2674148A1 CA2674148A1 CA002674148A CA2674148A CA2674148A1 CA 2674148 A1 CA2674148 A1 CA 2674148A1 CA 002674148 A CA002674148 A CA 002674148A CA 2674148 A CA2674148 A CA 2674148A CA 2674148 A1 CA2674148 A1 CA 2674148A1
- Authority
- CA
- Canada
- Prior art keywords
- digital video
- video program
- encrypted digital
- remote server
- encryption
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Selective encryption is provided in a process which includes: determining whether a predetermined criterion is satisfied; setting a selective encryption status field (1402) if the predetermined criterion is satisfied; and encrypting an unencrypted payload to generate an encrypted payload, and constructing a packet with the encrypted payload (1406), if the predetermined criterion is satisfied. The predetermined criterion may be one of several criteria, each of which reduce the required amount of encryption and decryption while maintaining a high level of security. Renewable encryption is provided in a process which includes: copying a first encrypted digital video program from a remote server to a video source; decrypting the first encrypted digital video program using a first key to generate an unencrypted digital video program; encrypting the unencrypted digital video program using a second key to generate a second encrypted digital video program; transmitting the second encrypted digital video program from the video source to the remote server;
and deleting the first encrypted digital video program from the remote server.
and deleting the first encrypted digital video program from the remote server.
Claims (8)
1. A secure method for providing digital video programming, the method comprising:
copying a first encrypted digital video program from a remote server to a video source;
decrypting the first encrypted digital video program using a first key to generate an unencrypted digital video program;
encrypting the unencrypted digital video program using a second key to generate a second encrypted digital video program;
transmitting the second encrypted digital video program from the video source to the remote server; and deleting the first encrypted digital video program from the remote server.
copying a first encrypted digital video program from a remote server to a video source;
decrypting the first encrypted digital video program using a first key to generate an unencrypted digital video program;
encrypting the unencrypted digital video program using a second key to generate a second encrypted digital video program;
transmitting the second encrypted digital video program from the video source to the remote server; and deleting the first encrypted digital video program from the remote server.
2. The method of claim 1, wherein the first key corresponds to a first time epoch during which the remote server provides the first encrypted digital video program to subscriber stations, and the second key corresponds to a second time epoch during which the remote server provides the second encrypted digital video program to the subscriber stations.
3. The method of claim 2, further comprising, prior to deleting the first encrypted digital video program from the server, transitioning from the first time epoch to the second time epoch.
4. The method of claim 3, wherein the first and second time epochs do not correspond to billing cycles.
5. The method of claim 1, further comprising, prior to decrypting the first encrypted digital video program, scheduling the first encrypted digital video program for renewal of encryption.
6. The method of claim 1, further comprising, prior to copying the first encrypted digital video program, a process for introducing an initial encrypted digital video program to the remote server.
7. An apparatus for securely providing digital video programming, the apparatus comprising:
an encryption coordinator configured to receive a first encrypted digital video program from a remote server;
an encryptor configured to decrypt the first encrypted digital video program using a first key to generate an unencrypted digital video program and to encrypt the unencrypted digital video program using a second key to generate a second encrypted digital video program, wherein the encryption coordinator receives the second encrypted digital video program from the encryptor and transmits the second encrypted digital video program to the remote server
an encryption coordinator configured to receive a first encrypted digital video program from a remote server;
an encryptor configured to decrypt the first encrypted digital video program using a first key to generate an unencrypted digital video program and to encrypt the unencrypted digital video program using a second key to generate a second encrypted digital video program, wherein the encryption coordinator receives the second encrypted digital video program from the encryptor and transmits the second encrypted digital video program to the remote server
8. The apparatus of claim 7, wherein, prior to decrypting the first encrypted digital video program, the encryption coordinator schedules the first encrypted digital video program for renewal of encryption.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12822499P | 1999-04-07 | 1999-04-07 | |
| US60/128,224 | 1999-04-07 | ||
| US13116299P | 1999-04-26 | 1999-04-26 | |
| US60/131,162 | 1999-04-26 | ||
| US09/525,580 | 2000-03-20 | ||
| US09/528,580 US6415031B1 (en) | 1999-03-12 | 2000-03-20 | Selective and renewable encryption for secure distribution of video on-demand |
| CA002369118A CA2369118C (en) | 1999-04-07 | 2000-04-05 | Selective and renewable encryption for secure distribution of video on-demand |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002369118A Division CA2369118C (en) | 1999-04-07 | 2000-04-05 | Selective and renewable encryption for secure distribution of video on-demand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2674148A1 true CA2674148A1 (en) | 2000-10-12 |
| CA2674148C CA2674148C (en) | 2012-06-05 |
Family
ID=41314459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2674148A Expired - Lifetime CA2674148C (en) | 1999-04-07 | 2000-04-05 | Selective and renewable encryption for secure distribution of video on-demand |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2674148C (en) |
-
2000
- 2000-04-05 CA CA2674148A patent/CA2674148C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2674148C (en) | 2012-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20200405 |