Support base32 OTP secrets

[robinkrahl]

Apparently, the de-facto standard set by Google Authenticator is sharing OTP secrets as base32 strings. We should support this input type in otp set. I suggest to replace the --ascii option with a --format [ascii|hex|base32] option.

[d-e-s-o]

Interesting. The suggestion sounds good! Do you plan to take care of that, @robinkrahl ?

[robinkrahl]

I added it to the list in the wiki. Probably, but I’ve got some other things to investigate first.

[robinkrahl]

I’ll need an additional dependency, base32, to implement this. Do you have an automated solution to add a crate and its dependencies to the repository or do you manually add them? Also this crate depends on rand ^0.5.5 while we currently have v0.6.1. Should we patch one of the crates to only have one rand version or should we include both?

[d-e-s-o]

Do you have an automated solution to add a crate and its dependencies to the repository or do you manually add them?

I manually add them. Don't worry about it, just update Cargo.toml and I'll take care of it before merging.

Also this crate depends on rand ^0.5.5 while we currently have v0.6.1. Should we patch one of the crates to only have one rand version or should we include both?

I checked and it's a dev-dependency. I am fine not vendoring those (and since it won't be included in the binary having two versions consumed is fine), so we should be good.

[robinkrahl]

Done with #49.