php-elgamal

elgamal encryption in php

text = text that you want to encrypt.

p = prime number > 255 . as private key

g = random number, 0 < g < p

x = random number, 0 < x < p . as private key

USAGE

encrypt()

convert plaintext to ciphertext

required text(string),p(int),g(int)

example:

$test = new elgamal();

$test->text = 'this is text';

$test->p = 257;

$test->g = 100;

$test->encrypt();

getKey()

get public key

required g(int),x(int),p(int)

example:

$test = new elgamal();

$test->g = 100;

$test->x = 50;

$test->p = 257;

$test->getKey();

decrypt()

convert ciphertext to plaintext

required cipher(array),p(int),x(int)

example

$test = new elgamal();

$test->cipher = [fill with cipher text];

$test->x = 50;

$test->p = 257;

$test->decrypt();