/**
* Decrypt data with a public key.
*
* @param string $encryptedData
*
* @throws \LogicException
*
* @return string
*/
protected function decrypt($encryptedData)
{
$publicKey = openssl_pkey_get_public($this->publicKey->getKeyPath());
$publicKeyDetails = @openssl_pkey_get_details($publicKey);
if ($publicKeyDetails === null) {
throw new \LogicException(sprintf('Could not get details of public key: %s', $this->publicKey->getKeyPath()));
}
$chunkSize = ceil($publicKeyDetails['bits'] / 8);
$output = '';
$encryptedData = base64_decode($encryptedData);
while ($encryptedData) {
$chunk = substr($encryptedData, 0, $chunkSize);
$encryptedData = substr($encryptedData, $chunkSize);
if (openssl_public_decrypt($chunk, $decrypted, $publicKey) === false) {
// @codeCoverageIgnoreStart
throw new \LogicException('Failed to decrypt data');
// @codeCoverageIgnoreEnd
}
$output .= $decrypted;
}
openssl_pkey_free($publicKey);
return $output;
}
