ParagonIE\Halite\HiddenString::getString PHP 메소드

    public function getString() : string
    {
        return Util::safeStrcpy($this->internalStringValue);
    }

 /**
  * @param HiddenString $keyMaterial - The actual key data
  * @throws InvalidKey
  */
 public function __construct(HiddenString $keyMaterial)
 {
     if (CryptoUtil::safeStrlen($keyMaterial->getString()) !== \Sodium\CRYPTO_BOX_SECRETKEYBYTES) {
         throw new InvalidKey('Encryption secret key must be CRYPTO_BOX_SECRETKEYBYTES bytes long');
     }
     parent::__construct($keyMaterial);
 }