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use std::fmt;
use std::fmt::Formatter;
use crate::key::OnlineKey;
use crate::message::RtMessage;
use crate::sign::Signer;
use crate::tag::Tag;
use crate::CERTIFICATE_CONTEXT;
pub struct LongTermKey {
signer: Signer,
}
impl LongTermKey {
pub fn new(seed: &[u8]) -> Self {
LongTermKey {
signer: Signer::from_seed(seed),
}
}
pub fn make_cert(&mut self, online_key: &OnlineKey) -> RtMessage {
let dele_bytes = online_key.make_dele().encode().unwrap();
self.signer.update(CERTIFICATE_CONTEXT.as_bytes());
self.signer.update(&dele_bytes);
let dele_signature = self.signer.sign();
let mut cert_msg = RtMessage::new(2);
cert_msg.add_field(Tag::SIG, &dele_signature).unwrap();
cert_msg.add_field(Tag::DELE, &dele_bytes).unwrap();
cert_msg
}
pub fn public_key(&self) -> &[u8] {
self.signer.public_key_bytes()
}
}
impl fmt::Display for LongTermKey {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}", self.signer)
}
}