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use crate::*;
use actor::*;
use internal::codec;
use internal::sign_ed25519;
use internal::x25519;
pub const ENTRY_SIZE: usize = 1024;
#[non_exhaustive]
#[derive(Debug, Clone)]
pub enum LairEntry {
TlsCert(EntryTlsCert),
SignEd25519(EntrySignEd25519),
X25519(EntryX25519),
}
impl From<EntryTlsCert> for LairEntry {
fn from(o: EntryTlsCert) -> Self {
Self::TlsCert(o)
}
}
impl From<EntrySignEd25519> for LairEntry {
fn from(o: EntrySignEd25519) -> Self {
Self::SignEd25519(o)
}
}
impl From<EntryX25519> for LairEntry {
fn from(o: EntryX25519) -> Self {
Self::X25519(o)
}
}
impl LairEntry {
pub fn decode(data: &[u8]) -> LairResult<LairEntry> {
let mut reader = codec::CodecReader::new(data);
reader.read_pre_padding()?;
let entry_type = reader.read_entry_type()?;
Ok(match entry_type {
codec::EntryType::TlsCert => {
LairEntry::TlsCert(entry_decode_tls_cert(reader)?)
}
codec::EntryType::SignEd25519 => {
LairEntry::SignEd25519(entry_decode_sign_ed25519(reader)?)
}
codec::EntryType::X25519 => {
LairEntry::X25519(entry_decode_x25519(reader)?)
}
})
}
pub fn encode(&self) -> LairResult<Vec<u8>> {
match self {
LairEntry::TlsCert(e) => e.encode(),
LairEntry::SignEd25519(e) => e.encode(),
LairEntry::X25519(e) => e.encode(),
}
}
}
fn entry_decode_tls_cert(
mut reader: codec::CodecReader<'_>,
) -> LairResult<EntryTlsCert> {
let sni_len = reader.read_u64()?;
let sni = String::from_utf8_lossy(reader.read_bytes(sni_len)?).to_string();
let priv_key_der_len = reader.read_u64()?;
let priv_key_der = reader.read_bytes(priv_key_der_len)?.to_vec();
let cert_der_len = reader.read_u64()?;
let cert_der = reader.read_bytes(cert_der_len)?.to_vec();
let cert_digest = reader.read_bytes(32)?.to_vec();
Ok(EntryTlsCert {
sni: sni.into(),
priv_key_der: priv_key_der.into(),
cert_der: cert_der.into(),
cert_digest: cert_digest.into(),
})
}
fn entry_decode_sign_ed25519(
mut reader: codec::CodecReader<'_>,
) -> LairResult<EntrySignEd25519> {
let priv_key = reader.read_bytes(32)?.to_vec().into();
let pub_key = reader.read_bytes(32)?.to_vec().into();
Ok(EntrySignEd25519 { priv_key, pub_key })
}
fn entry_decode_x25519(
mut reader: codec::CodecReader<'_>,
) -> LairResult<EntryX25519> {
let priv_key_data = reader.read_bytes(x25519::PRIV_KEY_BYTES as _)?;
let mut priv_key = [0_u8; x25519::PRIV_KEY_BYTES];
priv_key.copy_from_slice(priv_key_data);
let pub_key_data = reader.read_bytes(x25519::PUB_KEY_BYTES as _)?;
let mut pub_key = [0_u8; x25519::PUB_KEY_BYTES];
pub_key.copy_from_slice(pub_key_data);
Ok(EntryX25519 {
priv_key: priv_key.into(),
pub_key: pub_key.into(),
})
}
#[derive(Debug, Clone)]
pub struct EntryTlsCert {
pub sni: CertSni,
pub priv_key_der: CertPrivKey,
pub cert_der: Cert,
pub cert_digest: CertDigest,
}
impl EntryTlsCert {
pub fn encode(&self) -> LairResult<Vec<u8>> {
let mut writer = codec::CodecWriter::new(ENTRY_SIZE)?;
writer.write_pre_padding(16)?;
writer.write_entry_type(codec::EntryType::TlsCert)?;
let sni_bytes = self.sni.as_bytes();
writer.write_u64(sni_bytes.len() as u64)?;
writer.write_bytes(sni_bytes)?;
writer.write_u64(self.priv_key_der.len() as u64)?;
writer.write_bytes(&self.priv_key_der)?;
writer.write_u64(self.cert_der.len() as u64)?;
writer.write_bytes(&self.cert_der)?;
writer.write_bytes(&self.cert_digest[0..32])?;
Ok(writer.into_vec())
}
}
#[derive(Debug, Clone)]
pub struct EntryX25519 {
pub priv_key: x25519::X25519PrivKey,
pub pub_key: x25519::X25519PubKey,
}
impl EntryX25519 {
pub fn encode(&self) -> LairResult<Vec<u8>> {
let mut writer = codec::CodecWriter::new(ENTRY_SIZE)?;
writer.write_pre_padding(64)?;
writer.write_entry_type(codec::EntryType::X25519)?;
writer.write_bytes(&self.priv_key.to_bytes())?;
writer.write_bytes(&AsRef::<[u8]>::as_ref(&self.pub_key)[0..32])?;
Ok(writer.into_vec())
}
}
#[derive(Debug, Clone)]
pub struct EntrySignEd25519 {
pub priv_key: sign_ed25519::SignEd25519PrivKey,
pub pub_key: sign_ed25519::SignEd25519PubKey,
}
impl EntrySignEd25519 {
pub fn encode(&self) -> LairResult<Vec<u8>> {
let mut writer = codec::CodecWriter::new(ENTRY_SIZE)?;
writer.write_pre_padding(64)?;
writer.write_entry_type(codec::EntryType::SignEd25519)?;
writer.write_bytes(&self.priv_key[0..32])?;
writer.write_bytes(&self.pub_key[0..32])?;
Ok(writer.into_vec())
}
#[allow(clippy::rc_buffer)]
pub fn sign(
&self,
message: Arc<Vec<u8>>,
) -> impl std::future::Future<
Output = LairResult<sign_ed25519::SignEd25519Signature>,
> + 'static {
let priv_key = self.priv_key.clone();
sign_ed25519::sign_ed25519(priv_key, message)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_can_encode_and_decode_x25519_entry() {
let e = EntryX25519 {
priv_key: [0xdb; 32].into(),
pub_key: [0x42; 32].into(),
};
let d = LairEntry::from(e.clone()).encode().unwrap();
let e2 = match LairEntry::decode(&d).unwrap() {
LairEntry::X25519(e2) => e2,
e2 => panic!("unexpected type: {:?}", e2),
};
assert_eq!(e.priv_key, e2.priv_key);
assert_eq!(e.pub_key, e2.pub_key);
}
#[test]
fn it_can_encode_and_decode_sign_ed25519_entry() {
let e = EntrySignEd25519 {
priv_key: vec![0xdb; 32].into(),
pub_key: vec![0x42; 32].into(),
};
let d = LairEntry::from(e.clone()).encode().unwrap();
let e2 = match LairEntry::decode(&d).unwrap() {
LairEntry::SignEd25519(e2) => e2,
e2 => panic!("unexpected type: {:?}", e2),
};
assert_eq!(e.priv_key, e2.priv_key);
assert_eq!(e.pub_key, e2.pub_key);
}
#[test]
fn it_can_encode_and_decode_tls_cert_entry() {
let e = EntryTlsCert {
sni: "test".to_string().into(),
priv_key_der: vec![1, 2].into(),
cert_der: vec![3, 4].into(),
cert_digest: vec![0x42; 32].into(),
};
let d = LairEntry::from(e.clone()).encode().unwrap();
let e2 = match LairEntry::decode(&d).unwrap() {
LairEntry::TlsCert(e2) => e2,
e2 => panic!("unexpected type: {:?}", e2),
};
assert_eq!(e.sni, e2.sni);
assert_eq!(e.priv_key_der, e2.priv_key_der);
assert_eq!(e.cert_der, e2.cert_der);
assert_eq!(e.cert_digest, e2.cert_digest);
}
}