[PATCH] Add oathtool TOTP 2FA integration for pass show

[binarysauce.com.au]

Hi Brad, these functions are already a standard part of `cmd_show` in pass. I'm just modifying their behaviour with the --otp argument. The introduced and optional dependency for this functionality would be `oathtool` itself. If a user doesn't want to use oathtool, they should not be impacted by this addition.

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Tuesday, October 30, 2018 3:13 PM, Brad Knowles <brad at shub-internet.org> wrote:

> On Oct 29, 2018, at 11:37 PM, binarysauce.com.au reply at binarysauce.com.au wrote:
>
> > The introduced functionality is an --otp argument for cmd_show which when given the -o or --otp argument (additionally a token length) can show the generated token, clip will copy the generated token but qrcode will provides the qrcode of the original key so that it can be added to an authenticator app.
>
> Are "clip" and "qrcode" standard *nix utilities? Or maybe provided as a part of oathtool?
>
> --------------------------------------------------------------------------------------------
>
> Brad Knowles brad at shub-internet.org
>
> Please forgive any typos. I'm fighting a failing keyboard on my laptop, in addition to having a broken finger.