Lossless chaos‐based crypto‐compression scheme for image protection

Abstract

In this study, the authors proposed a new scheme which performs both lossless compression and encryption of images. Lossless compression is done by arithmetic coding (AC) while encryption is based on a chaos-based pseudorandom bit generator. Hence, they proposed to incorporate recent results of chaos theory into AC in order to shuffle the cumulative frequency vector of input symbols chaotically to make AC secure and the decoding process completely key-dependent. Many other techniques based on varying the statistical model used by AC have been proposed in literature, however, these techniques suffer from losses in compression efficiency that result from changes in entropy model statistics and are weak against known attacks. The proposed compression-encryption techniques were developed and discussed. The numerical simulation analysis indicates that the proposed scheme is highly satisfactory for image encryption without any AC compression efficiency loss. In addition, it can be incorporated into any image compression standard or algorithm employing AC as entropy coding stage, including static, adaptive and context-based adaptive models, and at any level, including bit, pixel and predictive error pixel levels.

A New Semiparametric Finite Mixture Model-Based Adaptive Arithmetic Coding for Lossless Image Compression

“…The AC implementation used during the experiment analysis was based on [9,22]. In this paper, we proposed to analyze our method on three well-known 8-bit grayscale image sets which are:…”

Compression and encryption for remote sensing image using chaotic system

“…The second one is the chaos based theory. It is known that the chaotic system can offer an efficient encryption method in cryptography . If the initial keys are not known to the legitimate receiver, they can not decrypt the permutation encryption.…”

Some elliptic curve based crypto-compression schemes for medical images

“…Many cryptosystems based on EC have been developed. Among them we have encryption schemes such as Elliptic Curve Integrated Encryption Scheme (ECIES) [5] [11], ElGamal's analog [9] and Massey-Omura's analog [9]; key agreement protocols like Elliptic Curve Diffie-Hellman (ECDH) key exchange [5]; digital signatures protocols like Elliptic Curve Digital Signature Algorithm (ECDSA) and Edwards curve Digital Signature Algorithm (EdDSA) [5]; pseudo-random generators [5], etc.…”

“…The execution time needed in decompression is also a limit in schemes based on DWT. Another platform, chaos-based cryptography, has also been used for image crypto-compression ( [8], [11]). However, although it is fast, it lacks robustness and good security, as mentioned in [18].…”