This paper proposes a collusion attack-resilient method of encryption for access control of
JPEG 2000 codestreams with hierarchical scalabilities. The proposed method generates …

This paper proposes an efficient access control method for content with multiple dimensions
of hierarchical scalability. The proposed method versatilely serves various quality content by …

The technique called progressive encryption is used in many areas of content security.
However, the plain algorithm itself is only applicable in real transmission scenarios where …

The paper proposes a progressive access control scheme for JPEG2000 image
codestreams based on chaotic maps. The access control scheme provides the possibility to …

This paper proposes an encryption method that uses short keys to enable hierarchical
access controls for JPEG 2000 codestreams. The proposed method provides images of …

This paper proposes a key derivation scheme to control access of JPEG 2000 (JP2) coded
images, which consist of hierarchical scalability such as SNR, resolution levels, and so on …

In this paper, an effective data hiding method for encrypted JPEG 2000 codestreams is
proposed. By using the property of the discrete wavelet transformation (DWT), an image is …

The proliferation of multimedia encryption techniques allows securing various applications
including tele-browsing and visio-conferencing. However, these techniques may also …

This paper proposes an efficient access control method for JPEG 2000 coded images with
multiple dimensions of hierarchical scalability. An access control method is required to 1) be …

抄録 An efficient key generating method that uses recursive hash chains is proposed for
hierarchical access control. The proposed method introduces recursive hash chains for …