We analyze recently proposed encryption algorithm Puzzle [3], aimed at efficient (real time) encryption of video streams. We show some weaknesses in the generation of components used for encryption. Moreover, we present a known plaintext attack on Puzzle. Some ideas on design of video encryption algorithms are discussed as well.
Citation:
Martin Stanek, Lubica Stanekova, "Unpuzzling Puzzle (analysis of a video encryption algorithm)," aina, vol. 2, pp.20-24, 20th International Conference on Advanced Information Networking and Applications - Volume 2 (AINA'06), 2006