A　novel　encryption/decryption　method　for　color　images　is　proposed,　in　which　quantum　Fourier　transform　(QFT)　and　double　random-phase　encoding　(DRPE)　techniques　have　been　used.　The　encryption　process　can　be　realized　by　performing　two　secret　random-phase　encoding　operations　respectively　in　the　input　and　the　QFT　planes.　Because　all　quantum　operations　are　invertible,　the　decryption　process　is　the　inverse　of　the　encryption　process.　Supported　by　detailed　numerical　simulation　and　theoretical　analysis,　the　method　has　clarified　its　robustness,　security　and　computational　complexity　over　its　classical　counterpart.　And　it　opens　the　door　for　introducing　color　image　encryption　into　quantum　scenarios.　(C)　2014　Elsevier　Inc.　All　rights　reserved.