olemus
krüptograafias: olek, milles ei saa jõurünne õnnestuda
ka piiramatute ressursside puhul
= in cryptography: a condition in which a brute force attack cannot succeed even with unlimited resources

ülevaateid
https://en.wikipedia.org/wiki/Information-theoretic_security

http://www.cse.iitm.ac.in/~chester/courses/16e_cns/slides/03_PerfectSecrecy.pdf

http://www.cs.miami.edu/home/burt/learning/Csc609.011/Perfect/

https://www.cs.princeton.edu/courses/archive/fall07/cos433/lec2.pdf

https://www3.cs.stonybrook.edu/~omkant/L02-short.pdf

vt ka
- arvutusturvalisus
- ühekordne šifriplokk