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<?php |
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namespace Erdemkeren\TemporaryAccess\Token\TokenGenerator; |
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use Erdemkeren\TemporaryAccess\Token\GenericToken; |
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abstract class AbstractTokenGenerator implements TokenGeneratorInterface |
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{ |
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/** |
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* The key to be used to encrypt the plain token. |
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* |
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* @var string |
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*/ |
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private $key; |
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/** |
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* TokenGenerator constructor. |
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* |
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* @param string $key The key to be used by the hash algorithm. |
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*/ |
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public function __construct($key) |
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{ |
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$this->key = $key; |
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} |
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/** |
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* Generate a new token. |
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* |
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* @param int $length The length of the plain text to be generated. |
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* |
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* @return GenericToken |
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*/ |
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public function generate($length = 6) |
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{ |
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$plainText = $this->getPlainText($length); |
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return $this->makeToken($this->encrypt($plainText), $plainText); |
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} |
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/** |
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* Generate a token from the given plain text. |
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* |
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* @param string $plainText The plain text. |
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* |
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* @return GenericToken |
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*/ |
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public function fromPlain($plainText) |
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{ |
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return $this->makeToken($this->encrypt($plainText), $plainText); |
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} |
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/** |
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* Generate a token from the given encrypted text. |
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* |
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* @param string $encryptedText The encrypted text. |
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* |
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* @return GenericToken |
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*/ |
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public function fromEncrypted($encryptedText) |
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{ |
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return $this->makeToken($encryptedText); |
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} |
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/** |
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* Get the hashed version of the generated token. |
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* |
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* @param string $plainText |
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* |
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* @return string |
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*/ |
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private function encrypt($plainText) |
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{ |
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return hash_hmac('sha256', $plainText, $this->key); |
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} |
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/** |
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* Create a new token instance with the given parameters. |
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* |
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* @param string $encryptedText |
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* @param string|null $plainText |
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* |
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* @return GenericToken |
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*/ |
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private function makeToken($encryptedText, $plainText = null) |
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{ |
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return new GenericToken($encryptedText, $plainText); |
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} |
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/** |
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* Get the plain text version of the token being generated. |
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* |
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* @param int $length |
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* |
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* @return string |
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*/ |
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abstract protected function getPlainText($length); |
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} |
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erdemkeren /
laravel-otp
