[locksley]

Thanks for the feedback. We're following https://code.google.com/p/crypto-js/#SHA-2

Could you let us know how it's incorrect? Otherwise, feel free to make a pull request on https://github.com/BitcoinMafia/SpareCoinsExt

[supercrypt]

You should suspend your project until you understand enough crypto to implement a cryptocurrency wallet. Follow the cryptocat project to understand the risk you are facing.