Function openpgp_card_sequoia::public_to_fingerprint

pub fn public_to_fingerprint(
    pkm: &PublicKeyMaterial, 
    ts: SystemTime, 
    kt: KeyType
) -> Result<[u8; 20]>

Mapping function to get a fingerprint from “PublicKeyMaterial + timestamp + KeyType” (intended for use with CardApp.generate_key()).