Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
34-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=329, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={506,267,42,267,206,267,312,660,372,592,458,312,660,402,312,660,641,461,455,506,641,267,206,660}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=947, g=633, x=490, a=226, b={343,237,573,237,706,352,246,582,476,246,361,715,945,467,706,821,467,573,237,343,936,237,219,246,936,237}, M=?
Kafedra mudiri Jo'rayev G.U.