fn find_working_key<'a>(
access: &'a [VaultAccess],
keychain: &Keychain,
) -> Result<VaultKey<'a>, OnePasswordError>Expand description
Finds a readable access entry whose vault key the keychain can already decrypt.
Without one, the reason is Unsupported when a readable entry uses a scheme we cannot decrypt,
otherwise NoAccess: a vault the account can see but not open. A malformed envelope is an
error.