olemus
ISO/IEC 11770:
meeldejätmiseks mugav saladus; tavaliselt tähendab see saladuse entroopia piiratust, nii et saladuse ammendav otsing võib olla teostatav, kui on teadmust õige oletuse eristamiseks väärast
= secret that can be conveniently memorized by a human being
Note. Typically, this means that the entropy of the secret is limited, so that an exhaustive search for the secret (or, a dictionary attack) may be feasible, given knowledge that would enable a correct guess for the secret to be distinguished from an incorrect guess.