Random　lasers　owing　the　functionality　of　generating　random　spectra　facilitate　the　chaotic　encrypted　systems　essential　for　cryptography　in　the　current　information　epoch.　Nevertheless,　single　wavelength　bands　of　random　lasers　provide　an　unsuitable　key　for　image　encryption　that　causes　outline　interpretation　and　a　fragile　complex　dual　chaotic　encryption　demanding　secured　image　encryption.　This　research　presents　an　inevitable　development　of　a　reversible　switchable　wavelength　fiber　random　laser　composed　of　the　mixture　of　highly　polarized　intramolecular　charge　transfer　dye　molecules　and　the　optimum　concentration　of　titanium　dioxide　acting　as　gain　and　efficient　scattering　mediums　respectively　within　a　polyvinyl　alcohol　matrix.　This　mixture　with　a　certain　ratio　is　coated　on　a　fiber　employing　a　dip　coated　method,　followed　by　a　layer　of　polydimethylsiloxane　to　facilitate　with　high　coefficient　of　thermal　expansion.　Random　laser　emission　is　enabled　with　dynamically　switchable　wavelengths　obeying　the　excited　state　intramolecular　proton　transfer　phenomenon　under　the　photo-isomerization.　The　optimum　scatters　concentration　yields　a　lower　threshold　of　32　µJ/cm2　with　full　width　at　half　maximum　of　0.4nm　and　dual　emission　reversible　switchable　wavelength　bands　centered　around　443nm　and　464nm　attributed　to　inter　charge　transfer　feature　of　the　dye　molecules.　Thereby,　the　dual　reversible　switchable　wavelength　bands　feed　as　input　for　a　dual　chaotic　color　image　encryption　system.　Further,　in　this　integrated　system,　beam　divergence　of　random　laser　emissions　remains　less　than　20°　during　both　situations　of　with-　and　without　irradiation.　This　delicate　approach　paves　the　way　in　laying　the　foundation　about　the　applicability　of　fiber　random　lasers　in　an　information　security　system.　©　2024　Optica　Publishing　Group　under　the　terms　of　the　Optica　Open　Access　Publishing　Agreement.