badkeys

Is anyone aware of an OCR tool that is reliable enough for non-text content like base64 that it can decode something like this?

(Context is something that was just posted on the dev-security-policy list and I currently can't judge the severity, but it happens every now and then that I see private or public keys in images that I'd like to get OCRed, source of this one: https://archive.ph/u6U2p )

Jan 21 at 9:18amWeb
Show threadAnton AttanoJan 21
@badkeys For one off extraction the Windows Snipping Tool had no Problems extracting this and even formatting it.
Show threadOOTSJan 21
@badkeys
As long as the font doesn't distinguish between a lower case "L" and an upper case "i" you'll still have to brute-force a few bits, I suppose...
Show threadIchinin   ✅🎯🙄Jan 21
@badkeys Most OCR programs i've tried do pretty well as long as the source material is a screenshot and not a picture taken by a human with a shaky hand.
Show threadPhilip GillißenJan 21

@badkeys I would expect that #tesseract can be configured to only accept a specific alphabet and ignore words. There are some Google hits for that but I have no experience with this use case specifically.

I had amended dictionaries for tesseract in the past with custom words and it worked easily and pretty well