Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi 1-bilet

Axborot xavfsizligining kriptografik usullari fanidan yakuniy nazorat ishi
40-bilet
1. AES- malumotlarni shifrlash standarti algoritmini tushuntiring
2. RSA ochiq kalitli shifrlash algoritmi uchun quyidagi parametrlarga mos yopiq kalitni hisoblang. p=37, q=23, e=553, d=?, hamda shu parametrlar yordamida shifrlangan quyidagi shifrni oching(deshifrlang). C={376,36,771,36,66,171,299,74,299,771,676,15,74,771,581,171,299,771}, M=?
3. El-Gamal algoritmini tushuntiring va quyidagi parametrlar yordamida shifrni oching (deshifrlang)
P=773, g=627, x=296, a=16, b={737,262,742,747,454,166,267,545,65,742,454,737,651,641,742,454,737,262}, M=?
Kafedra mudiri Jo'rayev G.U.