3 releases
0.1.2 | Sep 18, 2023 |
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0.1.1 | Aug 3, 2023 |
0.1.0 | Jul 3, 2023 |
#1643 in Cryptography
31 downloads per month
25KB
464 lines
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.
async-encrypted-stream = "0.1"
chacha20poly1305 = { version = "0.10", features = ["stream", "std"] }
Once the necessary dependencies are added, creating the stream is fairly trivial
use chacha20poly1305::aead::stream::{DecryptorLE31, EncryptorLE31};
use chacha20poly1305::XChaCha20Poly1305;
use async_encrypted_stream::{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<XChaCha20Poly1305>>,
WriteHalf<_, EncryptorLE31<XChaCha20Poly1305>>,
) = encrypted_stream(rx, tx, key.as_ref().into(), nonce.as_ref().into());
Dependencies
~2.9–4MB
~64K SLoC