# Sirtqi yo’nalishi 2-kurs talabalari uchun Kiberxavfsilzik fanidan topshiriq

 Sana 06.12.2021 Hajmi 33.5 Kb. #484192
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Sirtqi yo’nalishi 2-kurs talabalari uchun Kiberxavfsilzik fanidan

topshiriq

1. O’z ismingizni va familiyangizni Sezar usulida shifrlang va

deshifrlng.

2. Shaxsiy kompyuterga Antivirus dasturini o’rnating va anticirus

bazasini yangilang. Ekranni rasmga olib hisobot ko’rinishda

wordda topshirasizlar.

3. Kompyuteringizdagi biron papka yoki diskda zaxira nusxalash

amalga oshiring. AOMEI Backupper, Handy Backup

kabidasturlardan foydalangan holda.

1-topshiriq. O’z ismingizni va familiyangizni Sezar usulida shifrlang va

deshifrlang.

Buning uchun oldin alifboni tartiblab olamiz.

 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A B D E F G H I J K L M N O P Q R S 19 20 21 22 23 24 25 26 27 28 29 T U V X Y Z O’ G’ SH CH NG

Mening ismim Xaqyorbek endi ismimni sezar usulida shifrlayman.

Ismimdagi harflar tarib raqamiga 3 qoshish orqali shifrlayman.

XAQYORBEK => 22, 1, 16, 23, 14, 17, 2, 8, 10 => +3

25, 4, 19, 26, 17, 20, 5, 11, 13 => O’EQG’RUFLN

O’EQG’RUFLN bu shifrlangan soz.

Endi biz shirflagan malumotni deshifrlash uchun shifrlangan sozni tartib raqamini yozib ulardan 3 ni ayirib chiqamiz va shu raqamlarga mos harflarni yozamiz .

O’EQG’RUFLN => 25, 4, 19, 26, 17, 20, 5, 11, 13 => -3

22, 1, 16, 23, 14, 17, 2, 8, 10 => XAQYORBEK

Men ismimni shirflaganimda ushbu soz chiqqan edi O’EQG’RUFLN. Bu sozni deshifrlaganimdan song yana ismim hosil boldi