"[The system] should not require secrecy, and it should not be a problem if it falls into enemy hands"
Which gives rise to the idea of "security though obscurity" is bad. A system is said to rely on obscurity if the bad guy learning any facts about it (other than the special secret keys) represents a compromise.
"[The system] should not require secrecy, and it should not be a problem if it falls into enemy hands"
Which gives rise to the idea of "security though obscurity" is bad. A system is said to rely on obscurity if the bad guy learning any facts about it (other than the special secret keys) represents a compromise.
https://en.wikipedia.org/wiki/Kerckhoffs%27s_principle