This is so wrong. PHx and masterdoge had like 800 ghs to 3 THs hash, this coin never had more than 60 ghs and was around 20-15 ghs for the first 5000 blocks. Something is wrong here. I am sure this coin doesn't have that exploit.
Sorry to disappoint:

hexx to the left, masterdoge to the right, darkcrave in the center. The exploit is masked from direct comparison by a spurious whitespace character at the end of each line and a regex remapping of values to variables, once the masking is reversed, the diff is fairly clear.
The introduced variable names act as a useful telltale:
https://github.com/search?utf8=%E2%9C%93&q=++++%2F%2F+If+Klen+%3E+PAD_SIZE%2C+the+key+is+really+SHA256%28K%29.+%2F%2F+&type=Code&ref=searchresultsJust a few affected coins. Which particular one is the most likely candidate for the role of Typhoid Mary is left to rampant speculation.
Cheers
Graham