Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
55-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=599, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={774,333,760,506,487,66,719,487,819,760,487,506,333,269,487,692}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=569, g=30, x=17, a=82, b={377,457,17,57,337,337,466,48,177,88,217,8,217,48,177,88,217,8,217,48,177,17,466}, M=?
Kafedra mudiri Jo'rayev G.U.