On the security of a new image encryption scheme based on chaotic map lattices

This paper reports a detailed cryptanalysis of a recently proposed encryption scheme based on the logistic map. Some problems are emphasized concerning the key space definition and the implementation of the cryptosystem using floating-point operations. It is also shown how it is possible to reduce c...

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Bibliographic Details
Published in:arXiv.org 2008-04
Main Authors: Arroyo, David, Rhouma, Rhouma, Alvarez, Gonzalo, Li, Shujun, Fernandez, Veronica
Format: Article
Language:English
Subjects:
Algorithms
Cryptography
Encryption
Floating point arithmetic
Lattices
Public Key Infrastructure
Online Access:Get full text
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Summary:This paper reports a detailed cryptanalysis of a recently proposed encryption scheme based on the logistic map. Some problems are emphasized concerning the key space definition and the implementation of the cryptosystem using floating-point operations. It is also shown how it is possible to reduce considerably the key space through a ciphertext-only attack. Moreover, a timing attack allows the estimation of part of the key due to the existent relationship between this part of the key and the encryption/decryption time. As a result, the main features of the cryptosystem do not satisfy the demands of secure communications. Some hints are offered to improve the cryptosystem under study according to those requirements.
ISSN:2331-8422
DOI:10.48550/arxiv.0804.2174