Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
27-bilet
1. Katta sonlarni tub ko‘paytuvchilarga ajratish murakkabligiga asoslangan RSA generatorinin tushuntiring va misollar keltiring
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=239, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={456,808,471,214,760,117,506,583,127,37,471,117,143,693,693,59}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=337, g=162, x=3, a=295, b={303,326,251,328,68,249,68,70,326,68,197,199,326,199,174,68,226,326,251,68,328,68}, M=?
Kafedra mudiri Jo'rayev G.U.