This crate provides wrappers around pure rust implementations of the crypto
primitives used in `noise-protocol`.

The underlying implementations are:

* [`x25519-dalek`](https://crates.io/crates/x25519-dalek)
* [`chacha20poly1305`](https://crates.io/crates/chacha20poly1305)
* [`aes-gcm`](https://crates.io/crates/aes-gcm)
* [`sha2`](https://crates.io/crates/sha2)
* [`blake2`](https://crates.io/crates/blake2)