| US 7,483,535 B2 | ||
| Transmission of generalized scalable bit-streams | ||
| Debargha Mukherjee, San Jose, Calif. (US); and Huisheng Wang, Los Angeles, Calif. (US) | ||
| Assigned to Hewlett-Packard Development Company, L.P., Houston, Tex. (US) | ||
| Filed on Sep. 15, 2004, as Appl. No. 10/940,961. | ||
| Prior Publication US 2006/0062389 A1, Mar. 23, 2006 | ||
| Int. Cl. H04K 1/00 (2006.01); H04L 9/00 (2006.01) | ||
| U.S. Cl. 380—256 [380/42] | 40 Claims |
| 1. A method of encrypting a transmission unit of a generalized scalable bit-stream, the transmission unit being modeled in
a multi-dimensional scalable representation including a plurality of atoms, the method comprising:
for each atom of the transmission unit, concatenating bit-stream segments that map to the atom to obtain data for each atom;
encrypting the data for a logically first atom of the plurality of atoms of the multi-dimensional scalable representation
using an initialization input to produce an encryption output seed of the logically first atom and an encrypted logically
first atom; and
encrypting the data of other atoms of the plurality of atoms of the multi-dimensional scalable representation to produce encrypted
other atoms and an encryption output seed of each encrypted other atom, wherein encrypting a particular atom of the other
atoms comprises using encryption output seeds of adjacent causal atoms of the particular atom as an encryption input seed
for encrypting the particular atom.
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