Mod p = 27 mod 41 = 5

1. 
   O’z ismingizni El-Gamal shifrlash algoritmida shifrlang va deshifrlang.
   

tub muodulni 26 dan katta son olinglar.
Maxfiy kalit = tug’ilgan kun + 5; 4

p = 41; a = 2; x = 7; y = a^x mod p = 2⁷ mod 41 = 5;
ochiq kalit (41, 2, 5);
yopiq kalit (7);
Shifrlash
m = 4, 11, 1, 4, 10 = Elbek
k = 31;
C₁ = a^k mod p = 2³¹ mod 41 = 39;
C₂ = m * y^k mod p = 4 * 5³¹ mod 41 = 21;
C₂ = m * y^k mod p = 11 * 5³¹ mod 41 = 27
C₂ = m * y^k mod p = 1 * 5³¹ mod 41 = 36
C₂ = m * y^k mod p = 4 * 5³¹ mod 41 = 21
C₂ = m * y^k mod p = 10 * 5³¹ mod 41 = 32
C₁ = 39; C₂ = 21, 27, 36, 21, 32

Deshifrlash
K^-1 = C₁^p-x-1 mod P = 39^41-7-1 mod 41 = 8
M = C₂*K^-1 mod P =21 *8 mod 41 = 4;
M = C₂*K^-1 mod P =27 *8 mod 41 = 11;
M = C₂*K^-1 mod P =36 *8 mod 41 = 1;
M = C₂*K^-1 mod P =21 *8 mod 41 = 4;
M = C₂*K^-1 mod P =32 *8 mod 41 = 10;
m = 4, 11, 1, 4, 10 = Elbek