8,683 research outputs found
On the Design of Perceptual MPEG-Video Encryption Algorithms
In this paper, some existing perceptual encryption algorithms of MPEG videos
are reviewed and some problems, especially security defects of two recently
proposed MPEG-video perceptual encryption schemes, are pointed out. Then, a
simpler and more effective design is suggested, which selectively encrypts
fixed-length codewords (FLC) in MPEG-video bitstreams under the control of
three perceptibility factors. The proposed design is actually an encryption
configuration that can work with any stream cipher or block cipher. Compared
with the previously-proposed schemes, the new design provides more useful
features, such as strict size-preservation, on-the-fly encryption and multiple
perceptibility, which make it possible to support more applications with
different requirements. In addition, four different measures are suggested to
provide better security against known/chosen-plaintext attacks.Comment: 10 pages, 5 figures, IEEEtran.cl
Effective Caching for the Secure Content Distribution in Information-Centric Networking
The secure distribution of protected content requires consumer authentication
and involves the conventional method of end-to-end encryption. However, in
information-centric networking (ICN) the end-to-end encryption makes the
content caching ineffective since encrypted content stored in a cache is
useless for any consumer except those who know the encryption key. For
effective caching of encrypted content in ICN, we propose a novel scheme,
called the Secure Distribution of Protected Content (SDPC). SDPC ensures that
only authenticated consumers can access the content. The SDPC is a lightweight
authentication and key distribution protocol; it allows consumer nodes to
verify the originality of the published article by using a symmetric key
encryption. The security of the SDPC was proved with BAN logic and Scyther tool
verification.Comment: 7 pages, 9 figures, 2018 IEEE 87th Vehicular Technology Conference
(VTC Spring
- …