Adaptable encryption device and methods for use therewith
A video processing device includes a data segmentation generator that receives a domain selection, n, and that segments input A/V data into n data blocks. An encryption processing device receives an encryption depth selection, k, and a range selection, m, and sequentially encrypts each of the n data blocks m times using k different keys to generate n encrypted data blocks. An output formatter generates encrypted A/V data from the n encrypted data blocks.
1. A video processing device for encrypting audio/video (A/V) data, the video processing device comprising:
a data segmentation generator receives a domain selection n, and segments the A/V data into n data blocks;
an encryption processing device, coupled to the data segmentation generator, receives an encryption depth selection k, and a range selection m, and sequentially encrypts each of the n data blocks m times using k different keys to generate n encrypted data blocks, wherein the encryption processing device adjusts a strength of encrypted A/V data by changing at least one of: a domain n0, a depth k0 or a range m0 of the A/V data to at least one of: an adjusted domain (n0+n), an adjusted depth (k0+k) or an adjusted range (m0+m);
an output formatter, coupled to the encryption processing device, generates the encrypted A/V data from the n encrypted data blocks.
2. The video processing device of claim 1 wherein the data segmentation generator segments the A/V data to further include a residual data, and the output formatter generates the encrypted A/V data from the n encrypted data blocks and the residual data.
3. The video processing device of claim 1 wherein the encryption processing device does not encrypt the residual data.
4. The video processing device of claim 1 further comprising:
a key storage device, coupled to the encryption device, for storing the k different keys.
5. The video processing device of claim 1 wherein the A/V data is a payload portion of an elementary A/V bit stream.
6. The video processing device of claim 1 wherein the encrypted A/V data is upgraded with adjusted depth (k0+k) and adjusted range (m0+m).
7. The video processing device of claim 1 wherein the A/V data is formatted in accordance with an A/V format and the output formatter formats the encrypted A/V data in accordance with the A/V format.
8. A method for encrypting audio/video (A/V) data, the method comprising:
receiving a domain selection n, at a video processing device;
segmenting the A/V data into n data blocks;
receiving an encryption depth selection k, and a range selection m, at the video processing device;
sequentially encrypting, via an encryption processing device, each of the n data blocks m times using k different keys to generate n encrypted data blocks, adjusting a strength of encrypted A/V data by changing at least one of: a domain n0, a depth k0 or a range m0 of the A/V data to at least one of: an adjusted domain (n0+n), an adjusted depth (k0+k) or an adjusted range (m0+m); and
generating the encrypted A/V data from the n encrypted data blocks.
9. The method of claim 8 wherein segmenting the A/V data further includes generating a residual data, and the generating the encrypted A/V data from the n encrypted data blocks further includes the residual data.
10. The method of claim 9 wherein the residual data is not encrypted when included in the encrypted A/V data.
11. The method of claim 8 further comprising:
storing the k different keys in a key storage device.
12. The method of claim 8 wherein the encrypted A/V data is adjusted in accordance with the domain selection n, depth selection k and range selection m.
13. The method of claim 12 wherein at least one of the following conditions are met: n0≠n, k0≠k, and m0≠m.
14. The method of claim 8 wherein the A/V data is a payload portion of an A/V container format.
15. The method of claim 8 wherein the A/V data is formatted in accordance with an A/V format and the encrypted A/V data is formatted in accordance with the A/V format.
16. A video processing device for decrypting audio/video (A/V) data, the video processing device comprising:
a data segmentation generator receives a domain selection n, and segments the A/V data into n data blocks;
an decryption processing device, coupled to the data segmentation generator, receives an depth selection k, and a range selection m, and sequentially decrypts each of the n data blocks m times using k different keys to generate n decrypted data blocks, adjusting a strength of decrypted A/V data by changing at least one of: a domain n0, a depth k0 or a range m0 of the A/V data to at least one of: an adjusted domain (n0−n), an adjusted depth (k0−k) or an adjusted range (m0−m);
an output formatter, coupled to the encryption processing device, generates the decrypted A/V data from the n decrypted data blocks.