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<?php |
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namespace diecoding\flysystem\traits; |
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use yii\base\InvalidConfigException; |
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use yii\helpers\StringHelper; |
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/** |
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* Trait EncrypterTrait for Model |
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* |
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* @link https://sugengsulistiyawan.my.id/ |
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* @author Sugeng Sulistiyawan <[email protected]> |
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* @copyright Copyright (c) 2023 |
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*/ |
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trait EncrypterTrait |
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{ |
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/** |
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* @var string |
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*/ |
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private $_cipherAlgo; |
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/** |
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* @var string |
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*/ |
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private $_passphrase; |
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/** |
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* @var string |
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*/ |
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private $_iv; |
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/** |
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* Init Encrypter |
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* |
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* @param string $passphrase |
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* @param string $iv |
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* |
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* @return void |
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* @throws InvalidConfigException |
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*/ |
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public function initEncrypter($passphrase, $iv, $cipherAlgo = 'aes-128-cbc') |
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{ |
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$this->_cipherAlgo = $cipherAlgo; |
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$this->normalizePassphrase($passphrase); |
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$this->normalizeIv($iv); |
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} |
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/** |
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* Encrypts a string. |
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* |
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* @param string $string the string to encrypt |
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* @return string the encrypted string |
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*/ |
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public function encrypt($string) |
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{ |
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$encryptedString = openssl_encrypt($string, $this->_cipherAlgo, $this->_passphrase, OPENSSL_RAW_DATA, $this->_iv); |
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$encryptedString = StringHelper::base64UrlEncode($encryptedString); |
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return $encryptedString; |
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} |
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/** |
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* Decrypts a string. |
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* False is returned in case it was not possible to decrypt it. |
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* |
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* @param string $string the string to decrypt |
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* @return string the decrypted string |
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*/ |
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public function decrypt($string) |
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{ |
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$decodedString = StringHelper::base64UrlDecode($string); |
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$decodedString = openssl_decrypt($decodedString, $this->_cipherAlgo, $this->_passphrase, OPENSSL_RAW_DATA, $this->_iv); |
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return $decodedString; |
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} |
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/** |
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* @param string $passphrase |
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* @param int $minPassphraseLength |
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* |
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* @return void |
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* @throws InvalidConfigException |
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*/ |
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private function normalizePassphrase($passphrase, $minPassphraseLength = 32) |
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{ |
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$this->_passphrase = $passphrase; |
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if (empty($this->_passphrase)) { |
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throw new InvalidConfigException('The "passphrase" property must be set.'); |
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} |
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$passphraseLength = strlen($this->_passphrase); |
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if ($passphraseLength < $minPassphraseLength) { |
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$this->_passphrase = str_repeat($this->_passphrase, (int) ceil($minPassphraseLength / $passphraseLength)); |
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} |
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} |
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/** |
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* @param string $iv |
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* |
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* @return void |
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* @throws InvalidConfigException |
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*/ |
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private function normalizeIv($iv) |
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{ |
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$this->_iv = $iv; |
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if (empty($this->_iv)) { |
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throw new InvalidConfigException('The "iv" property must be set.'); |
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} |
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$ivLength = strlen($this->_iv); |
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$mustIvLength = openssl_cipher_iv_length($this->_cipherAlgo); |
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if ($ivLength < $mustIvLength) { |
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$this->_iv = str_repeat($this->_iv, (int) ceil($mustIvLength / $ivLength)); |
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} |
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$this->_iv = substr($this->_iv, 0, $mustIvLength); |
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} |
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} |
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wanforge /
yii2-flysystem
