pub fn sign_detached(
data: &[u8],
signer: &mut Signing<'_>,
) -> Result<(String, String), String>Expand description
A detached signature of data, armored, and the hash it used (“pgp-sha512”),
for multipart/signed (RFC 3156 §5). signer is your key here
(here_signer) or on a security key (securitykey::CardSigner).