Multimedia Selective Encryption by Means of Randomized Arithmetic Coding

We propose a novel multimedia security framework based on a modification of the arithmetic coder, which is used by most international image and video coding standards as entropy coding stage. In particular, we introduce a randomized arithmetic coding paradigm, which achieves encryption by inserting...

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Vydáno v:IEEE transactions on multimedia Ročník 8; číslo 5; s. 905 - 917
Hlavní autoři: Grangetto, M., Magli, E., Olmo, G.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.10.2006
Institute of Electrical and Electronic Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Applied sciences
Arithmetic
Arithmetic coding
Artificial intelligence
Code standards
Coders
Coding
Computer science; control theory; systems
conditional access
Cryptography
Delay
Encryption
Entropy
Exact sciences and technology
Image coding
Information, signal and communications theory
JPEG 2000
Multimedia
Pattern recognition. Digital image processing. Computational geometry
Protocols
Security
selective encryption
Signal and communications theory
Signal processing algorithms
Technology management
Telecommunications and information theory
Video coding
Video coding
Multimedia
JPEG 2000
Block code
conditional access
Joint picture expert group
Image processing
Image compression
Encryption
Image coding
Randomization
selective encryption
Arithmetic code
Cryptography
Arithmetic coding
ISSN:1520-9210, 1941-0077
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Popis
Shrnutí:We propose a novel multimedia security framework based on a modification of the arithmetic coder, which is used by most international image and video coding standards as entropy coding stage. In particular, we introduce a randomized arithmetic coding paradigm, which achieves encryption by inserting some randomization in the arithmetic coding procedure; notably, and unlike previous works on encryption by arithmetic coding, this is done at no expense in terms of coding efficiency. The proposed technique can be applied to any multimedia coder employing arithmetic coding; in this paper we describe an implementation tailored to the JPEG 2000 standard. The proposed approach turns out to be robust towards attempts to estimating the image or discovering the key, and allows very flexible protection procedures at the code-block level, allowing to perform total and selective encryption, as well as conditional access
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ISSN:1520-9210
1941-0077
DOI:10.1109/TMM.2006.879919