Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
4-bilet
1. Katta sonlarni tub ko‘paytuvchilarga ajratish murakkabligiga asoslangan RSA generatorinin tushuntiring va misollar keltiring
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=305, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={37,408,392,623,833,674,12,674,248,623,321,501,37,805,169,12,674,805,169}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=887, g=371, x=387, a=155, b={281,732,425,842,262,8,732,607,732,118,497,372,823,262,118,262,190,262}, M=?
Kafedra mudiri Jo'rayev G.U.