Cargo Features

authorized_keys has no features set by default.

[dependencies]
authorized_keys = { version = "1.0.0", features = ["key_encoding"] }
key_encoding = data-encoding

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

data-encoding key_encoding?