SHA-512

[bitmodeler]

I used a digest of SHA-512, and the codes generated were not consistent with Google Authenticator set to SHA-512, using the same shared secret. SHA-1? Works every time.

Here's what's interesting: I found the same discrepancy for a number of other python and [node] JavaScript totp implementations! Try it, and you'll see the same results. Works for SHA-1, but not SHA-512.

The Google Authenticator is this one:
https://github.com/Authenticator-Extension