INNOVATION IN THE MODERN EDUCATION SYSTEM
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3.1-rasm. a=0. 3.2-rasm. b=0.
Grafik ko‟rinishi berilgan elliptik egri chiziqning diskerminantiga bog‟liq
hisoblanadi(4-rasm).
4-rasm. Diskerminantga bog‟liq holda grafik o‟zgarishi.
(4) – diskerminant formulasi.
Elliptik egri chiziqqa (EECH) asoslangan kriptografiya ma‟lumotlarni
shifrlash uchun kalitga asoslangan assimmetrik kriptotizimlar oilasiga kiruvchi
muammo murakkabligiga ko‟ra, Elliptik egri chiziqda
diskret logorifmlash
muammosining murakkabligiga asoslangan kriptotizim hisoblanadi.
(4) formuladagi diskerminant
holatlar
uchun EECH asoslangan
kriptotizimlarda foydalaniladi. Elliptik egri chiziqlarda nuqtalar ustida amallar
bajarishda geometrik nuqtani nazardan formularga asoslanib hisob-kitob
ishlari amalga oshiriladi.
Geometrik nuqtai nazardan elliptik egri chiziq
Elliptik egri chiziq (E)da ixtiyoriy 2 ta P va Q nuqtalar tanlanib ulardan
to‟g‟ri chiziq(L) o‟tkazilganda ushbu to‟g‟ri chiziq elliptik egri chiziqni biror R
nuqtada kesib o‟tadi va shu R nuqtaning OX o‟qiga
nisbatan simmetrik
bo‟lgan nuqtasi P va Q nuqtalarning elliptik egri chiziqda yig‟indisiga teng
hisoblanadi(5-rasm).