Image Encryption Through Rössler System, PRNG S-Box and Recamán's Sequence

This paper proposes a lightweight image encryption scheme that is based on 3 stages. The first stage incorporates the use of the Rössler attractor for the Rössler system, the second stage incorporates the use of a PRNG S-Box, while the third stage makes use of the Recamán's sequence. Performance of the proposed encryption scheme is evaluated using a number of metrics. The computed values of the metrics indicate a comparable performance to counterpart schemes from the literature, at a very low cost of processing time. Such a trait indicates that the proposed image encryption scheme possesses potential for real-time image security applications.