An implementation of Trevor Perrin's Noise Protocol that is designed to be Hard To Fuck Up™.
🔥 Warning 🔥 This library has not received any formal audit, and its API is subject to change whenever it's prudent to or if the winds blow at the right heading.
See examples/simple.rs
for a more complete TCP client/server example.
let mut noise = NoiseBuilder::new("Noise_NN_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 based off of Noise revision 32.
- Rekey()
-
pskN
modifier - specifying PSKs after building
Session
-
fallback
modifier
Cryptographic providers are swappable through NoiseBuilder::with_provider()
, 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 NoiseBuilder::with_resolver()
.
If you enable the ring-accelerated
feature, Snow will default to choosing ring
's crypto implementations when available.
HACL* is a formally verified cryptographic library, accessed via the rust-hacl-star
wrapper crate.
If you enable the hacl-resolver
feature, Snow will include a hacl_wrapper
module as well as a HaclStarResolver
available to be used with NoiseBuilder::with_resolver()
.
Similar to ring, if you enable the hacl-accelerated
feature, Snow will default to choosing HACL* implementations when available.