Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
12-bilet
1. Kalitlarni almashish Diffi-Xellman algoritmini tushuntiring va misollar keltiring
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=551, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={450,642,668,450,391,111,491,450,581,167,145}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=659, g=620, x=462, a=326, b={181,381,131,181,22,422,531,36,645,495,545}, M=?
Kafedra mudiri Jo'rayev G.U.