ChaCha20 Poly1305 PHP implimentation (CHACHA20 POLY1305 PHP CLASS)

Result:

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

r_key:	4c1eb99bcd9f53eee9a4a4e521c56152d7bc3c8f
aad:	dac853060b48df2546b72d7042d1f34d2e693c76
Iv:	2a5528784e02955701b0a62b4f219f0cf20820e0

crypt:	55a755edb22eb202cbb0bb71ad8a8eddd0987f7a02c78f810156ba996b55d68119a5774e1772a4ee86a97f5d4ed56da55925c0b1c70dcbba1e882272a06e5ada9a638e0cbd84e13d855dd531bd070dcbc117a6cb4fb3c6c67d362474

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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