Magento 2: How to get encrypted config value?

Question

I am making a custom form plugin that integrates ReCaptcha in Magento 2.

To integrate ReCaptcha in the frontend I am trying to read ReCaptcha v3 public key (recaptcha_frontend/type_recaptcha_v3/public_key) from the system configuration using ScopeConfigInterface interface in Block template like this.

<?php

namespace Vendor\CustomForm\Block;

use Magento\Store\Model\ScopeInterface;

class Template extends \Magento\Framework\View\Element\Template
{
    private const XML_PATH_RECAPTCHA_PUBLIC_KEY = 'recaptcha_frontend/type_recaptcha_v3/public_key';

    protected $scopeConfig;

    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
        array $data = []
    ) {
        parent::__construct($context, $data);
        $this->scopeConfig = $scopeConfig;
    }

    public function getReCaptchaPublicKey(): string
    {
        return $this->scopeConfig->getValue(static::XML_PATH_RECAPTCHA_PUBLIC_KEY, ScopeInterface::SCOPE_WEBSITE);
    }
}

And accessing it in the block.phtml like this.

<?php echo $block->getReCaptchaPublicKey(); ?>

But instead of the public key, I get the following output.

$this->helper('Vendor\Module\Helper\Data')->getConfig('section/group/field');

Any help would be appreciated!

UPDATE: I did try using EncryptorInterface but no luck!

<?php

namespace Vendor\CustomForm\Block;

use Magento\Store\Model\ScopeInterface;

class Template extends \Magento\Framework\View\Element\Template
{
    private const XML_PATH_RECAPTCHA_PUBLIC_KEY = 'recaptcha_frontend/type_recaptcha_v3/public_key';

    protected $scopeConfig;
    protected $encryptor;

    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Framework\App\Config\ScopeConfigInterface $scopeConfig,
        \Magento\Framework\Encryption\EncryptorInterface $encryptor,
        array $data = []
    ) {
        parent::__construct($context, $data);
        $this->scopeConfig = $scopeConfig;
        $this->encryptor = $encryptor;
    }

    public function getReCaptchaPublicKey(): string
    {
        $key = $this->scopeConfig->getValue(static::XML_PATH_RECAPTCHA_PUBLIC_KEY, ScopeInterface::SCOPE_WEBSITE);
        return $this->encryptor->decrypt($key);
    }
}

Here is a screenshot of core_config_data table. I trying to access the value with the path recaptcha_frontend/type_recaptcha_v3/public_key.