Why you must never generate your own promo codes
medium.com
medium.com
What would be the alternative, to find a "Trusted Certified Code Generator Authority"?
Edit: for example Bitcoins, Satoshi and Bitcoin Exchanges. The generator is using a version AES FPE (BPS) standards as I see, so it's kind of peer-reviewed.
To say something as well established as a 'Trusted Certificate Authority' equates to 'Stranger Stranger Stranger' is slightly erroneous. I may not know them personally, but to all intents and purposes my browser is incredibly familiar with the technology and has been for generations. That trust has been earned.
I've no idea what the process was for SSL to become to central, but it'd be a good example of how to reach that position with something like a promo code generator. I'd imagine a lot of time being peer reviewed, worked on collaboratively and if it's ever misused strong evidence of hotfixes in new iterations. A a track record of legitimacy. Of earned trust.