pebbleOTP

pebbleOTP

Time based One Time Password generator for pebble

Supported OTP types

• RFC6238 OTP (Google Authenticator)
• Battle.net OTP

Build Instruction

1. Get your OTP Secrets

• Secrets for Google Authenticator is already base32 encoded. just use it as
• Battle.net OTP Secret can be obtained by using python-bna(https://github.com/Adys/python-bna)
  • python-bna saves secret in "~/.config/bna/bna.conf". this secret is hexlified. you should unhexlify and base32 encode it.

import base64, binascii
print base64.b32encode(binascii.unhexlify('YOUR_BATTLE_NET_SECRET'))

2. edit src/main.c to input the your OTP info

• edit OTP_INFO.
  • type can be totpGoogle or totpBattlenet
  • secret is your base32 encoded secret.
  • description is description.
  • You want to add more OTP, just expand OTP_INFO variable. here is an example.

OTPInfo OTP_INFO[] = {
{
  .type = totpGoogle,
  .secret = "secretsecret",
  .description = "Github"
}, 
{
  .type = totpBattlenet,
  .secret = "battlenetotpsecret",
  .description = "Battle.net OTP!"
}, 
};

3. edit src/totp.c to setup default timezone

• variable TIMEZONE is an index for TIMEZONE_MAP. find your timezone offset from UTC in TIMEZONE_MAP and set TIMEZONE to your timezone index.

4. Just build it and install on your pebble.