An implementation of Trevor Perrin's Noise Protocol that is designed to be Hard To Fuck Upโข.
๐ฅ Warning ๐ฅ This library has not received any formal audit.
See examples/simple.rs
for a more complete TCP client/server example.
let mut noise = snow::Builder::new("Noise_NN_25519_ChaChaPoly_BLAKE2s".parse()?)
.build_initiator()?;
let mut buf = [0u8; 65535];
// write first handshake message
noise.write_message(&[], &mut buf)?;
// receive response message
let incoming = receive_message_from_the_mysterious_ether();
noise.read_message(&incoming, &mut buf)?;
// complete handshake, and transition the state machine into transport mode
let mut noise = noise.into_transport_mode()?;
See the full documentation at https://docs.rs/snow.
Snow is currently tracking against Noise spec revision 34.
However, a not all features have been implemented yet (pull requests welcome):
Cryptographic providers are swappable through Builder::with_resolver()
, but by default it chooses select, artisanal
pure-Rust implementations (see Cargo.toml
for a quick overview).
ring is a crypto library based off of BoringSSL and is significantly faster than most of the pure-Rust implementations.
If you enable the ring-resolver
feature, Snow will include a ring_wrapper
module as well as a RingAcceleratedResolver
available to be used with Builder::with_resolver()
.
If you enable the ring-accelerated
feature, Snow will default to choosing ring
's crypto implementations when available.
default | ring | |
---|---|---|
CSPRNG | โ | โ |
25519 | โ | โ |
448 | ||
AESGCM | โ | |
ChaChaPoly | โ | โ |
SHA256 | โ | โ |
SHA512 | โ | โ |
BLAKE2s | โ | |
BLAKE2b | โ |