Multiple-image　encryption　techniques　not　only　improve　the　encryption　capacity　but　also　facilitate　the　transmission　and　storage　of　the　ciphertext　We　present　a　new　method　of　multiple-image　encryption　based　on　compressive　holography　with　enhanced　data　security　using　a　multiple-beam　interferometer.　By　modifying　the　Mach-Zehnder　interferometer,　the　interference　of　multiple　object　beams　and　unique　reference　beam　is　implemented　for　encrypting　multiple　images　simultaneously　into　one　hologram.　The　original　images　modulated　with　the　random　phase　masks　are　put　in　different　positions　with　different　distance　away　from　the　CCD　camera.　Each　image　plays　the　role　of　secret　key　for　other　images　to　realize　the　mutual　encryption.　Four-step　phase　shifting　technique　is　combined　with　the　holographic　recording.　The　holographic　recording　is　treated　as　a　compressive　sensing　process,　thus　the　decryption　process　is　inverted　as　a　minimization　problem　and　the　two-step　iterative　shrinkage/thresholding　algorithm　(TwIST)　is　employed　to　solve　this　optimization　problem.　The　simulated　results　about　multiple　binary　and　grayscale　images　encryption　are　demonstrated　to　verify　the　validity　and　robustness　of　our　proposed　method.　(C)　2014　Elsevier　B.V.　All　rights　reserved.