ChaCha20 Poly1305 PHP implimentation (CHACHA20 POLY1305 PHP CLASS)

Result:

plaintext:	Lorem Ipsum is simply dummy text of the printing and typesetting industry...

r_key:	3fe0a20f148d3fb2d9bf3d40325cadf8b53e638d
aad:	e1ec2589228bc110f5ba2cbcf178a6625372c557
Iv:	1d820c3b59b898e0a8e59bb3c8a3317b69ffcb6e

crypt:	3a35c1ad6259b60bd1171a4c531249bf37af5c555a59518fa09d3946596ec1cba738b55e4dd6444752e6b4d9ebdd7658c58210ab8b9b2cfa3b4c334cecf0480e2cd12f6b7b1d838f421193408196ade7251867cd0830094868dba8a3

decrypt:	Lorem Ipsum is simply dummy text of the printing and typesetting industry...

Code example:

<?php

include("AEAD_CHACHA20_POLY1305.php");

$x = new AEAD_CHACHA20_POLY1305;

$plaintext = 'Lorem Ipsum is simply dummy text of the printing and typesetting industry...';

$r_key = sha1(sha1(sha1(mt_rand(0, 99999) + time())));
$aad = sha1(sha1(sha1(mt_rand(0, 99999) + time())));
$Iv = sha1(sha1(sha1(mt_rand(0, 99999) + time())));

$crypt = $x->chacha20_aead_encrypt($aad, $Key, $Iv, '07000000', $plaintext);
$decrypt = $x->chacha20_aead_decrypt($aad, $Key, $Iv, '07000000', $crypt);

$out = '<pre>';

$out .= "plaintext:\t".$plaintext."\n\n";

$out .= "r_key:\t".$r_key."\n";
$out.= "aad:\t".$aad."\n";
$out .= "Iv:\t".$Iv."\n\n";

$out .= "crypt:\t".$crypt."\n\n";
$out .= "decrypt:\t".$decrypt."\n\n";

$out .= '</pre>';

echo $out;

?>

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