Crate libp2p_noise

Noise protocol framework support for libp2p.

Note: This crate is still experimental and subject to major breaking changes both on the API and the wire protocol.

This crate provides libp2p_core::InboundUpgrade and libp2p_core::OutboundUpgrade implementations for various noise handshake patterns (currently IK, IX, and XX) over a particular choice of Diffie–Hellman key agreement (currently only X25519).

Note: Only the XX handshake pattern is currently guaranteed to provide interoperability with other libp2p implementations.

All upgrades produce as output a pair, consisting of the remote’s static public key and a NoiseOutput which represents the established cryptographic session with the remote, implementing futures::io::AsyncRead and futures::io::AsyncWrite.

Usage

Example:

use libp2p_core::{identity, Transport, upgrade};
use libp2p_tcp::TcpConfig;
use libp2p_noise::{Keypair, X25519Spec, NoiseConfig};

let id_keys = identity::Keypair::generate_ed25519();
let dh_keys = Keypair::<X25519Spec>::new().into_authentic(&id_keys).unwrap();
let noise = NoiseConfig::xx(dh_keys).into_authenticated();
let builder = TcpConfig::new().upgrade(upgrade::Version::V1).authenticate(noise);
// let transport = builder.multiplex(...);

Modules

handshake

Noise protocol handshake I/O.

Structs

AuthenticKeypair	A DH keypair that is authentic w.r.t. a identity::PublicKey.
Handshake	A future performing a Noise handshake pattern.
Keypair	DH keypair.
KeypairIdentity	The associated public identity of a DH keypair.
LegacyConfig	Legacy configuration options.
NoiseAuthenticated	A NoiseAuthenticated transport upgrade that wraps around any NoiseConfig handshake and verifies that the remote identified with a RemoteIdentity::IdentityKey, aborting otherwise.
NoiseConfig	The protocol upgrade configuration.
NoiseOutput	A noise session to a remote.
ProtocolParams	The parameters of a Noise protocol, consisting of a choice for a handshake pattern as well as DH, cipher and hash functions.
PublicKey	DH public key.
SecretKey	DH secret key.
X25519	A X25519 key.
X25519Spec	A X25519 key.

Enums

IK	Type tag for the IK handshake pattern.
IX	Type tag for the IX handshake pattern.
IdentityExchange	The options for identity exchange in an authenticated handshake.
NoiseError	libp2p_noise error type.
RemoteIdentity	The identity of the remote established during a handshake.
XX	Type tag for the XX handshake pattern.

Traits

Protocol

A Noise protocol over DH keys of type C. The choice of C determines the protocol parameters for each handshake pattern.