Async Encrypted Stream

Async Read and Write wrappers around the chacha20 encryption primitives.

This crate exposes a pair of [ReadHalf] and [WriteHalf] structs that works with any [tokio::io::AsyncRead] and [tokio::io::AsyncWrite] respectively.

To use this crate, it is necessary to add chacha20poly1305 as a dependency as well.

Cargo.toml async-encrypted-stream = "0.1" chacha20poly1305 = { version = "0.10", features = ["stream", "std"] }

Once the necessary dependencies are added, creating the stream is fairly trivial

```rust use chacha20poly1305::aead::stream::{DecryptorLE31, EncryptorLE31}; use chacha20poly1305::XChaCha20Poly1305;

use asyncencryptedstream::{ReadHalf, WriteHalf, encrypted_stream};

// The key and nonce used must be the same on both ends of the stream // NOTE: the size of the key and nonce values are defined by the type of Encryption used let key = [0u8; 32]; let nonce = [0u8; 20];

let (rx, tx) = tokio::io::duplex(4096); let (mut reader, mut writer): ( ReadHalf<_, DecryptorLE31>, WriteHalf<_, EncryptorLE31>, ) = encryptedstream(rx, tx, key.asref().into(), nonce.as_ref().into()); ```