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Send RLPx auth in EIP-8 format (#287)

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rakita 2021-03-03 12:58:10 +01:00 committed by GitHub
parent 7c9eed8d65
commit ba011eba15
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 18 additions and 21 deletions
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39
crates/net/network-devp2p/src/handshake.rs
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@ -20,14 +20,13 @@ use ethkey::{
crypto::{ecdh, ecies},
recover, sign, Generator, KeyPair, Public, Random, Secret,
};
use hash::write_keccak;
use host::HostInfo;
use io::{IoContext, StreamToken};
use mio::tcp::*;
use network::{Error, ErrorKind};
use node_table::NodeId;
use parity_bytes::Bytes;
use rand::random;
use rand::{random, Rng};
use rlp::{Rlp, RlpStream};
use std::time::Duration;
@ -314,25 +313,23 @@ impl Handshake {
Message: Send + Clone + Sync + 'static,
{
trace!(target: "network", "Sending handshake auth to {:?}", self.connection.remote_addr_str());
let mut data = [0u8; /*Signature::SIZE*/ 65 + /*H256::SIZE*/ 32 + /*Public::SIZE*/ 64 + /*H256::SIZE*/ 32 + 1]; //TODO: use associated constants
let len = data.len();
{
data[len - 1] = 0x0;
let (sig, rest) = data.split_at_mut(65);
let (hepubk, rest) = rest.split_at_mut(32);
let (pubk, rest) = rest.split_at_mut(64);
let (nonce, _) = rest.split_at_mut(32);
// E(remote-pubk, S(ecdhe-random, ecdh-shared-secret^nonce) || H(ecdhe-random-pubk) || pubk || nonce || 0x0)
let shared = *ecdh::agree(secret, &self.id)?;
sig.copy_from_slice(&*sign(self.ecdhe.secret(), &(shared ^ self.nonce))?);
write_keccak(self.ecdhe.public(), hepubk);
pubk.copy_from_slice(public);
nonce.copy_from_slice(&self.nonce);
}
let message = ecies::encrypt(&self.id, &[], &data)?;
self.auth_cipher = message.clone();
self.connection.send(io, message);
let mut rlp = RlpStream::new_list(4);
let shared = *ecdh::agree(secret, &self.id)?;
rlp.append(&sign(self.ecdhe.secret(), &(shared ^ self.nonce))?.to_vec());
rlp.append(public);
rlp.append(&self.nonce);
rlp.append(&PROTOCOL_VERSION);
let mut encoded = rlp.out();
encoded.resize(
encoded.len() + rand::thread_rng().gen_range::<usize>(100, 301),
0,
);
let len = (encoded.len() + ECIES_OVERHEAD) as u16;
let prefix = len.to_be_bytes();
let message = ecies::encrypt(&self.id, &prefix, &encoded)?;
self.auth_cipher.extend_from_slice(&prefix);
self.auth_cipher.extend_from_slice(&message);
self.connection.send(io, self.auth_cipher.clone());
self.connection.expect(V4_ACK_PACKET_SIZE);
self.state = HandshakeState::ReadingAck;
Ok(())