In the age of Information Technology, the day-life required transmitting millions of images
between users. Securing these images is essential. Digital image encryption is a well-known
technique used in securing image content. In image encryption techniques, digital images are
converted into noise images using secret keys, where restoring them to their originals required
the same keys. Most image encryption techniques depend on two steps: confusion and diffusion.
In this work, a new algorithm presented for image encryption using a hyperchaotic system and
Fibonacci Q-matrix. The original image is confused in this algorithm, utilizing randomly generated
numbers by the six-dimension hyperchaotic system. Then, the permutated image diffused using
the Fibonacci Q-matrix. The proposed image encryption algorithm tested using noise and data cut
attacks, histograms, keyspace, and sensitivity. Moreover, the proposed algorithm’s performance
compared with several existing algorithms using entropy, correlation coefficients, and robustness
against attack. The proposed algorithm achieved an excellent security level and outperformed the
existing image encryption algorithms.