Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
43-bilet
1. Rukzak algoritmini tushuntiring(generatsiya qilish va shifrlash) va misollar keltiring
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=775, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={232,273,114,273,254,487,115,363,304,273,333,487,729}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=677, g=425, x=236, a=647, b={658,157,148,570,157,113,447,157,359,192,491,192,69,148,157,482,104,157}, M=?
Kafedra mudiri Jo'rayev G.U.