Understanding Key Sensitivity in Chaos-Based Image Encryption 🔐

An instructional video on key sensitivity in chaos based encryption.

Sipi Database: https://sipi.usc.edu/database/

Relevant papers on chaos based encryption:
-- https://dergipark.org.tr/en/pub/chaos/issue/54264/756229
-- https://ieeexplore.ieee.org/abstract/document/9396395
-- https://link.springer.com/chapter/10.1007/978-3-030-92166-8_7
-- https://link.springer.com/article/10.1007/s11042-022-13657-7
-- https://www.mdpi.com/2073-8994/15/3/726

Matlab codes, see the collection: https://uk.mathworks.com/matlabcentral/fileexchange/?q=profileid:28825692

Full playlist: https://www.youtube.com/playlist?list=PL9y6bivP9mhEXxZGThfzyIJEZp5-BakCi

Chaos-based encryption is a cryptographic technique that leverages the unpredictable and sensitive nature of chaotic systems to secure data. Unlike traditional encryption methods that rely on complex mathematical structures such as large prime factorizations or elliptic curves, chaos-based encryption uses nonlinear dynamical systems whose behavior is highly sensitive to initial conditions. A small change in the input or parameters leads to vastly different outputs, making it extremely difficult for an unauthorized party to reverse-engineer the encryption without precise knowledge of the system's initial state.

These methods are often used in multimedia encryption, such as image, video, and audio protection, due to their speed and efficiency in processing large volumes of data. By using chaotic maps—such as the logistic map, Lorenz system, or newer ones—chaos-based encryption can generate pseudo-random sequences that scramble and diffuse information effectively. Chaos-based encryption is still an evolving field with many open problems regarding standardization, key management, and resistance to various cryptanalytic attacks.

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