backdoor by authorized_keys2 leftovers

[Damien Miller]

On Thu, 19 May 2011, Jim Knoble wrote:

> While we're at it, Ciphers and MACs use commas for separators. Using
> spaces may prevent placing authorized_keys files in a directory whose
> name contains whitespace.

I think the solution for these is to make strdelim() handle quotes, because
paths with spaces are broken more generally.

IIRC there is already a bug for this if anyone wants to do it.

-d