Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
33-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=457, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={512,65,262,562,512,93,512,640,512,609,625,245,781,512,587,512,625,245,813}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=673, g=51, x=564, a=483, b={668,224,143,217,224,335,520,335,224,291,32,520,32,446,520,298,483,594,520}, M=?
Kafedra mudiri Jo'rayev G.U.