pub fn base32_decode(s: &str) -> Result<Vec<u8>, String>Expand description
Decodes unpadded (or padded) RFC 4648 base32, case-insensitively.
Spaces are stripped because this is what a human types back out of the
grouped display the UI shows, and = is accepted because a user pasting a
secret exported from somewhere else should not have to know the difference.