swapping orion for ring

Cargo.toml

@@ -5,10 +5,10 @@ authors = ["Isabelle L. <me@izzabelle.dev>"]
 edition = "2018"
 
 [dependencies]
-orion = "0.15.1"
 serde = { version = "1.0.110", features = ["derive"]}
 serde_json = "1.0.53"
 futures = "0.3.5"
 futures-util = "0.3.5"
 uuid = { version  = "0.8.1", features = ["v4"] }
 chrono = "0.4.11"
+ring = "0.16.13"

src/lib.rs

@@ -2,7 +2,6 @@
 #![allow(dead_code)]
 
 use futures_util::io::{AsyncReadExt, AsyncWriteExt};
-use orion::aead;
 use std::convert::TryInto;
 use std::marker::Unpin;
 
@@ -73,23 +72,6 @@ where
     Ok(Some(packet))
 }
 
-/// reads a `Packet` from a stream and decrypts
-///
-/// if `Ok(None)` is returned the stream has been disconnected.
-pub async fn read_encrypted<S>(stream: &mut S, key: &aead::SecretKey) -> Result<Option<Packet>>
-where
-    S: AsyncReadExt + Unpin,
-{
-    let packet = read(stream).await?;
-    match packet {
-        None => Ok(packet),
-        Some(mut packet) => {
-            packet.contents = aead::open(&key, &packet.contents)?;
-            Ok(Some(packet))
-        }
-    }
-}
-
 /// Writes a `Sendable` packet to a stream
 pub async fn write<S, P>(stream: &mut S, packet: P) -> Result<()>
 where
@@ -101,19 +83,6 @@ where
     Ok(())
 }
 
-/// Writes an encrypted `Sendable` packet to a stream
-pub async fn write_encrypted<S, P>(stream: &mut S, packet: P, key: &aead::SecretKey) -> Result<()>
-where
-    S: AsyncWriteExt + Unpin,
-    P: Sendable,
-{
-    let mut packet = packet.to_packet()?;
-    packet.contents = aead::seal(&key, &packet.contents)?;
-    let network_packet = packet.to_network_packet();
-    stream.write(&network_packet.0).await?;
-    Ok(())
-}
-
 /// Kinds of packets that can be sent
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 #[repr(u8)]