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<?php

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if (class_exists('ParagonIE_Sodium_Core32_Poly1305', false)) {

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return;

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}

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/**

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* Class ParagonIE_Sodium_Core32_Poly1305

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abstract class ParagonIE_Sodium_Core32_Poly1305 extends ParagonIE_Sodium_Core32_Util

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{

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const BLOCK_SIZE = 16;

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/**

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* @internal You should not use this directly from another application

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* @param string $m

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* @param string $key

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* @return string

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* @throws SodiumException

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* @throws TypeError

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public static function onetimeauth($m, $key)

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{

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if (self::strlen($key) < 32) {

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throw new InvalidArgumentException(

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'Key must be 32 bytes long.'

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);

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}

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$state = new ParagonIE_Sodium_Core32_Poly1305_State(

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self::substr($key, 0, 32)

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);

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return $state

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->update($m)

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->finish();

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}

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/**

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* @internal You should not use this directly from another application

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* @param string $mac

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* @param string $m

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* @param string $key

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* @return bool

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* @throws SodiumException

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* @throws TypeError

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public static function onetimeauth_verify($mac, $m, $key)

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{

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if (self::strlen($key) < 32) {

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throw new InvalidArgumentException(

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'Key must be 32 bytes long.'

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);

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}

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$state = new ParagonIE_Sodium_Core32_Poly1305_State(

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self::substr($key, 0, 32)

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);

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$calc = $state

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->update($m)

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->finish();

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return self::verify_16($calc, $mac);

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}

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}

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