//It's possible CryptographicException can be thrown if the keys are changed.
public XElement Decrypt(XElement encryptedElement)
{
if (encryptedElement == null)
{
throw new ArgumentNullException(nameof(encryptedElement));
}
using var aesObj = new AesGcmService(_key);
return(XElement.Parse(aesObj.Decrypt(encryptedElement.Element("value")?.Value)));
}
public EncryptedXmlInfo Encrypt(XElement plaintextElement)
{
if (plaintextElement == null)
{
throw new ArgumentNullException(nameof(plaintextElement));
}
using var aesObj = new AesGcmService(_key);
var element = new XElement("encryptedKey",
new XComment(" This key is encrypted with AES-256-GCM. "),
new XElement("value",
aesObj.Encrypt(plaintextElement.ToString())));
return(new EncryptedXmlInfo(element, typeof(AesGcmXmlDecryptor)));
}
