Kalmar sirri – software don ajiye kalmomin shiga da bayanan sirri a cikin ɓoyayyen bayanai. Software yana ba da damar ƙirƙirar kalmar sirri mai amfani don samun dama ga ajiyar kalmomin shiga na asusun yanar gizo da aikace-aikace. Kalmar sirri na iya ɗauka ta atomatik siffofin yanar gizo na tsawon tsayi a kan kowane intanet. Kayan aiki yana aiki tare da bayanai ta hanyar sabobin girgije ko mai amfani da Wi-Fi na gida, kuma kalmar sirri ta gida ta tabbatar da bayanan sirri ba zai bayyana a intanet ba. Kalmar sirri ta ƙunshi fasali na bayanan sirri da ke tallafawa samfurori daban-daban don adana bayanin game da katin bashi, asusun banki, lasisin direba, fasfo, da dai sauransu. Kalmomin sirri yana ƙunshi janarewar kalmar sirri wanda ke taimakawa mai amfani ya ƙirƙiri kalmar sirri mai ƙarfi daidai daga wasu takardun haruffa, irin su haruffa, alamomi da lambobi.