Brian Smith f2488d6118 Agreement: Stop requiring the KDF to return a Result.
Many (most?) KDFs are infallible, so optimize for that case. If the KDF
is fallible then the result will be `Ok(Err(_))` which is messy.

This eliminates the `error_value` parameter.
2021-02-04 19:06:25 -08:00
..
2017-06-09 17:47:34 -10:00