ChaCha20 Poly1305 PHP implimentation (CHACHA20 POLY1305 PHP CLASS)

Result:

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

r_key:	0b56a2c0b1e09e08e2136a5894fc9d77ab570e53
aad:	77d3856200d220a1750bea785bcf345740b6e8df
Iv:	c71c9b0ff3ce868a3b9bf67185704b7795ec26f9

crypt:	956c15e159c6a966609e3cf72bd53c85771c564975ee275905d7a7d58f0b2aaa88f78f6a24956f5eaf00f16a208d7297447471c0a937d79cb9c532d28a5221d763f87b46fb0665248331f6db723cb60387af67edec92cbf51147f71a

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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