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<?php |
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/** |
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* Class Box |
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* |
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* @filesource Box.php |
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* @created 25.01.2018 |
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* @package chillerlan\Cryptobox |
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* @author Smiley <[email protected]> |
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* @copyright 2018 Smiley |
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* @license MIT |
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*/ |
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namespace chillerlan\Cryptobox; |
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use function random_bytes, sodium_crypto_box, sodium_crypto_box_keypair_from_secretkey_and_publickey, |
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sodium_crypto_box_open, sodium_memzero; |
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use const SODIUM_CRYPTO_BOX_NONCEBYTES, SODIUM_CRYPTO_BOX_PUBLICKEYBYTES, SODIUM_CRYPTO_BOX_SECRETKEYBYTES; |
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class Box extends CryptoBoxAbstract{ |
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/** |
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* @param string $message |
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* @param string|null $nonce_bin |
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* |
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* @return \chillerlan\Cryptobox\CryptoBoxInterface |
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*/ |
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public function create(string $message, string $nonce_bin = null):CryptoBoxInterface{ |
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$this->checkKeypair(SODIUM_CRYPTO_BOX_SECRETKEYBYTES, SODIUM_CRYPTO_BOX_PUBLICKEYBYTES); |
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$message = $this->checkMessage($message); |
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$keypair = sodium_crypto_box_keypair_from_secretkey_and_publickey($this->keypair->secret, $this->keypair->public); |
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$this->nonce = $nonce_bin ?? random_bytes(SODIUM_CRYPTO_BOX_NONCEBYTES); |
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$this->box = sodium_crypto_box($message, $this->nonce, $keypair); |
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sodium_memzero($keypair); |
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sodium_memzero($message); |
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if($nonce_bin !== null){ |
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sodium_memzero($nonce_bin); |
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} |
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return $this; |
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} |
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/** |
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* @param string $box_bin |
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* @param string $nonce_bin |
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* |
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* @return \chillerlan\Cryptobox\CryptoBoxInterface |
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* @throws \chillerlan\Cryptobox\CryptoException |
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*/ |
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public function open(string $box_bin, string $nonce_bin):CryptoBoxInterface{ |
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$this->checkKeypair(SODIUM_CRYPTO_BOX_SECRETKEYBYTES, SODIUM_CRYPTO_BOX_PUBLICKEYBYTES); |
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$keypair = sodium_crypto_box_keypair_from_secretkey_and_publickey($this->keypair->secret, $this->keypair->public); |
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$this->message = sodium_crypto_box_open($box_bin, $nonce_bin, $keypair); |
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sodium_memzero($keypair); |
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sodium_memzero($box_bin); |
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sodium_memzero($nonce_bin); |
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if($this->message !== false){ |
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return $this; |
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} |
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throw new CryptoException('invalid box'); // @codeCoverageIgnore |
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} |
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} |
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chillerlan /
php-cryptobox
