To address the vulnerability of the widely used block permutation and co-XOR (BPCX) encryption algorithm in reversible data-hiding in the encrypted domain (RDH-ED). which is susceptible to known-plaintext attacks (KPAs). and to enhance embedding capacity. we propose a novel technique of reversible data-hiding in encrypted images (RDH-EI). https://www.markbroyard.com/flash-grab-hobbit-door-on-sale-limited-grab/