Validating ECDSA keys

[selmanj]

I saw that it's not feasible at the moment to implement generating ECDSA keys based on this closed issue: #15

What about adding support to #valid_ssh_public_key? to be able to validate ECDSA keys?

[bensie]

I think it's doable, but can't be sure until I dig in. I'll look into it as soon as I can or I'd welcome a PR that adds it.

[selmanj]

For reference, I dug in a bit to this. You could probably get pretty strong validation by following the format defined in RFC 5656.

I'd be willing to give it a shot; if I prepared a PR, would you be willing to accept it if I added 'Google Inc.' to the list of authors in the license file?

[bensie]

@selmanj That'd be good with me!

[selmanj]

Hoping to come back to this eventually, but I'm not actively working on this yet (in case anyone else wants to submit an implementation).

[mcclymont]

A simple implementation: #24

[bensie]

Thanks @mcclymont, closing in favor of #24.