Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
54-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=403, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={747,27,662,277,561,781,561,662,569,840,561,674,569,443,428,222,781,20,105,662,569}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=449, g=381, x=108, a=44, b={60,5,77,172,359,336,218,100,267,77,408,394,63,181}, M=?
Kafedra mudiri Jo'rayev G.U.