Generalized hierarchical encryption of JPEG 2000 codestreams for access control

Author

Imaizumi, Shoko ; Watanabe, Osamu ; Fujiyoshi, Masaaki ; Kiya, Hitoshi

Author_Institution

Dept. of Electr. Eng., Tokyo Metropolitan Univ., Japan

Volume

2

fYear

2005

fDate

11-14 Sept. 2005

Abstract

This paper proposes an encryption scheme maintaining hierarchy of JPEG 2000 codestreams for flexible access control. JPEG 2000 generates hierarchical codestreams and has flexible scalability, such as, SNR, space, or color components. In a proposed method, only one managed key (master key) exists, and for a user permitted to access a reserved image quality, only one key generated by the master key is delivered. Also, a different key generated by the master key is delivered for a user permitted to access a different quality. The proposed access control method is available for all kinds of JPEG 2000 scalability. On the other hand, some conventional methods need several keys to control image quality. Another conventional method is not suitable for JPEG 2000 scalability.

Keywords

access control; cryptography; video coding; JPEG 2000 codestreams; JPEG 2000 scalability; access control; generalized hierarchical encryption; managed key; reserved image quality; Access control; Cryptography; Decoding; Digital images; Image quality; Privacy; Protection; Quality management; Scalability; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

Image Processing, 2005. ICIP 2005. IEEE International Conference on

Print_ISBN

0-7803-9134-9

Type

conf

DOI

10.1109/ICIP.2005.1530250

Filename

1530250