Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
13-bilet
1. Zamonaviy shifrlash algoritmlariga asosiy talablar
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=461, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={553,660,286,660,272,147,660,147,458,267,391,592,391,660}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=479, g=468, x=294, a=65, b={398,352,336,352,151,460,352,460,213,105,290,89,43,429,275,259,228,58,414,43,275,460,321,352,213,352}, M=?
Kafedra mudiri Jo'rayev G.U.