<?php
if (class_exists('ParagonIE_Sodium_Core32_Poly1305', false)) {
return;
}
abstract class ParagonIE_Sodium_Core32_Poly1305 extends ParagonIE_Sodium_Core32_Util
{
const BLOCK_SIZE = 16;
public static function onetimeauth($m, $key)
{
if (self::strlen($key) < 32) {
throw new InvalidArgumentException('Key must be 32 bytes long.');
}
$state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($key, 0, 32));
return $state->update($m)->finish();
}
public static function onetimeauth_verify($mac, $m, $key)
{
if (self::strlen($key) < 32) {
throw new InvalidArgumentException('Key must be 32 bytes long.');
}
$state = new ParagonIE_Sodium_Core32_Poly1305_State(self::substr($key, 0, 32));
$calc = $state->update($m)->finish();
return self::verify_16($calc, $mac);
}
}