ChaCha20 Poly1305 PHP implimentation (CHACHA20 POLY1305 PHP CLASS)

Result:

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

r_key:	1373e17785a5f9c53b955b315f2df0876b67b8fc
aad:	b4658860e2ec8edecf484c3001e1216685415a2b
Iv:	33b9b6e2962895765942a37e9b3bee916ca89272

crypt:	43480bfc8e1aac50f3dff4824dbe91ba6a2aea7566291bb2d925a35260b1e48b9eff9b82bccb066528c02e2b15a76ede4ddb0cd4fc30232eb2d848ed348a0eb9a482de27ec7804370d413c489809b544f68581a212eb9b1bc75a50d1

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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