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<?php |
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/** |
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* Class BoxKeypair |
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* |
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* @filesource BoxKeypair.php |
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* @created 24.01.2018 |
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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 sodium_crypto_box_keypair, sodium_crypto_box_publickey, sodium_crypto_box_publickey_from_secretkey, |
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sodium_crypto_box_secretkey, sodium_crypto_box_seed_keypair, sodium_memzero, strlen; |
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use const SODIUM_CRYPTO_BOX_SECRETKEYBYTES, SODIUM_CRYPTO_BOX_SEEDBYTES; |
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class BoxKeypair extends CryptoKeypairAbstract{ |
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/** |
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* @inheritdoc |
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* |
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* @throws \chillerlan\Cryptobox\CryptoException |
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*/ |
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public function create(string $seed_bin = null):CryptoKeypairInterface{ |
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if($seed_bin !== null && strlen($seed_bin) !== SODIUM_CRYPTO_BOX_SEEDBYTES){ |
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throw new CryptoException('invalid seed length'); |
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} |
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$this->keypair = $seed_bin |
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? sodium_crypto_box_seed_keypair($seed_bin) |
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: sodium_crypto_box_keypair(); |
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$this->secret = sodium_crypto_box_secretkey($this->keypair); |
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$this->public = sodium_crypto_box_publickey($this->keypair); |
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if($seed_bin !== null){ |
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sodium_memzero($seed_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 $secret_bin |
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* |
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* @return \chillerlan\Cryptobox\CryptoKeypairInterface |
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* @throws \chillerlan\Cryptobox\CryptoException |
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*/ |
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public function createFromSecret(string $secret_bin):CryptoKeypairInterface{ |
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if(strlen($secret_bin) !== SODIUM_CRYPTO_BOX_SECRETKEYBYTES){ |
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throw new CryptoException('invalid secret key length'); |
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} |
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$this->secret = $secret_bin; |
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$this->public = sodium_crypto_box_publickey_from_secretkey($this->secret); |
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$this->keypair = $this->secret.$this->public; |
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sodium_memzero($secret_bin); |
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return $this; |
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} |
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} |
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chillerlan /
php-cryptobox
