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// Copyright 2017-2018 int08h LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//!
//! Represents the server's long-term identity.
//!
use time::Timespec;
use byteorder::{LittleEndian, WriteBytesExt};
use std::fmt;
use std::fmt::Formatter;
use key::OnlineKey;
use message::RtMessage;
use sign::Signer;
use tag::Tag;
use CERTIFICATE_CONTEXT;
///
/// Represents the server's long-term identity.
///
pub struct LongTermKey {
signer: Signer,
}
impl LongTermKey {
pub fn new(seed: &[u8]) -> Self {
LongTermKey {
signer: Signer::from_seed(seed),
}
}
/// Create a CERT message with a DELE containing the provided online key
/// and a SIG of the DELE value signed by the long-term key
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
}
}
impl fmt::Display for LongTermKey {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f, "{}", self.signer)
}
}
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