[stefanos82]

I did describe to them what I have implemented, explained the logic behind it, but they wanted to see the actual source code which I could not share for legal reasons as I have stated (NDA).

Feel free to believe whatever you like, no worries.

[icedchai]

In 25 years I’ve never been in an interview where I was asked to share source code from a previous project. What you described seems unusual.