/// <summary>
/// Generates the encrypted log event.
/// </summary>
/// <param name="source">The source logging event.</param>
/// <returns>The source logging event with the message encrypted accordingly</returns>
public virtual LoggingEvent GenerateEncryptedLogEvent(LoggingEvent source)
{
LoggingEvent result;
try
{
var encryptedMessage = MessageEncryption.Encrypt(source.RenderedMessage);
string exceptionString = source.GetExceptionString();
string encryptedExceptionMessage = null;
if (!string.IsNullOrWhiteSpace(exceptionString))
{
encryptedExceptionMessage = MessageEncryption.Encrypt(exceptionString);
}
result = LogEventFactory.CreateEncryptedLoggingEvent(source, encryptedMessage, encryptedExceptionMessage);
}
catch (Exception ex)
{
// Ensure that the logging encryption never fails with an unexpected exception, rather, create an error
// log event so that can be logged instead. This is to ensure that we aren't inadvertently leaking
// sensitive data in our logs if an error occurs, better to log nothing than leak data!
result = LogEventFactory.CreateErrorEvent(ex.Message);
}
return(result);
}
protected EncryptedMessage encryptMessage(string message, Guid remoteId)
{
// encrypt message
var em = MessageEncryption.Encrypt(Encoding.UTF8.GetBytes(message));
// encrypt key
encryptKey(ref em, remoteId);
return(em);
}