کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
766977 897140 2012 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Comments on “arithmetic coding as a non-linear dynamical system”
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی مکانیک
پیش نمایش صفحه اول مقاله
Comments on “arithmetic coding as a non-linear dynamical system”
چکیده انگلیسی

Nagaraj et al. [1] and [2] present a skewed-non-linear generalized Luroth Series (s-nGLS) framework. S-nGLS uses non-linear maps for GLS to introduce a security parameter a which is used to build a keyspace for image or data encryption. The map introduces non-linearity to the system to add an “encryption key parameter”. The skew is added to achieve optimal compression efficiency. s-nGLS used as such for joint encryption and compression is a weak candidate, as explained in this communication. First, we show how the framework is vulnerable to known plaintext based attacks and that a key of size 256 bits can be broken within 1000 trials. Next, we demonstrate that the proposed non-linearity exponentially increases the hardware complexity of design. We also discover that s-nGlS cannot be implemented as such for large bitstreams. Finally, we demonstrate how correlation of key parameter with compression performance leads to further key vulnerabilities.


► Vulnerability of skewed n-GLS to plain-text attack.
► Increase in hardware complexity by the skew.
► Impracticality for large bitstreams.
► Key vulnerability caused by correlation with compression.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Communications in Nonlinear Science and Numerical Simulation - Volume 17, Issue 12, December 2012, Pages 4536–4543
نویسندگان
, , ,