Title :
Is MPEG encryption by using random list instead of zigzag order secure?
Author :
Qiao, Lintian ; Nahrstedt, Klara ; Tam, Ming-Chit
Author_Institution :
Dept. of Comput. Sci., Illinois Univ., Urbana, IL, USA
Abstract :
This paper discusses the problems of the MPEG video encryption algorithm by using a random permutation list instead of a zigzag order within the MPEG compression process. We show that (1) the encryption method causes a significant size increase of the MPEG video stream, hence defeats the purpose of compression, and (2) the encryption method can not withstand the known-plaintext attack, therefore, should not be considered as secure. We also discuss other solutions to achieve secure, time-efficient, and size-preserving MPEG-video encryption
Keywords :
code standards; cryptography; data compression; random processes; telecommunication standards; video coding; MPEG compression; MPEG video encryption algorithm; known-plaintext attack; random permutation list; size-preserving secure encryption; video stream; zigzag order; Computer science; Cryptography; Data security; Digital multimedia broadcasting; Multimedia communication; Streaming media; Transform coding; Video compression; Video on demand; Videoconference;
Conference_Titel :
Consumer Electronics, 1997. ISCE '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-4371-9
DOI :
10.1109/ISCE.1997.658393
