Video scrambling apparatus and method based on space filling cur

Details Video scrambling apparatus and method based on space filling cur Video scrambling apparatus and method based on space filling cur

1988-08-12

1990-03-20

Cangialosi, Salvatore

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 11, 380 14, H04L 900

Patent

active

049107720

ABSTRACT:
A method of encrypting a video signal employing a pseudo-random Space Filling Curve having a highly irregular scanning pattern for scanning the pixel addresses of a video picture stored in a frame buffer. The method is used with a video scrambler/descrambler device and is characterized by a much higher cryptographic strength than existing techniques, which is not subject to simple correlation attacks by comparing and matching of line portions. In addition, the method features a reduction in the video signal bandwidth for typical pictures.

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Mattias, Yossi, M. S. Thesis, CS Dept., The Weizmann Institute of Science, May 1987, pp. 12-16.

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