FelixWeis/hdwallet — pull request #2 by elmato (2013-06-13 19:01:27+00:00)
Title: master secret / master chain using inverted part of HMAC-SHA512

BIP32 https://en.bitcoin.it/wiki/BIP_0032
says "Use IL as master secret key, and IR as master chain code."

IL was being used for chain code and IR was being used from master secret