We have been doing this in all of our web applications for over a decade now. Essentially, whenever there is an error, we don't just display the error message as-is. All the technical or trace info it contains seems to scare users. So, we simply encrypt it and display a base64-encoded version of it. It also gets saved into a log file.
Users are more comfortable with this way: they simply copy/paste the text to us and we have all the info we need.
Users are more comfortable with this way: they simply copy/paste the text to us and we have all the info we need.