Driver: Replace xsalsa20poly1305 with crypto_secretbox (#198)

As of v0.9.1, `xsalsa20poly1305` has been deprecated. This is a mostly seamless replacement, as it appears to be the same crate authors / code / etc.

Co-authored-by: Kyle Simpson <kyleandrew.simpson@gmail.com>

Cargo.toml

@@ -18,6 +18,7 @@ async-trait = { optional = true, version = "0.1" }
 audiopus = { optional = true, version = "0.3.0-rc.0" }
 byteorder = { optional = true, version = "1" }
 bytes = { optional = true, version = "1" }
+crypto_secretbox = { optional = true, features = ["std"], version = "0.1" }
 dashmap = { optional = true, version = "5" }
 derivative = "2"
 discortp = { default-features = false, features = ["discord", "pnet", "rtp"], optional = true, version = "0.5" }
@@ -50,7 +51,6 @@ twilight-model = { default-features = false, optional = true, version = "0.15.0"
 typemap_rev = { optional = true, version = "0.3" }
 url = { optional = true, version = "2" }
 uuid = { features = ["v4"], optional = true, version = "1" }
-xsalsa20poly1305 = { features = ["std"], optional = true, version = "0.9" }
 
 [dependencies.serenity]
 version = "0.11"
@@ -91,6 +91,7 @@ driver = [
     "dep:async-trait",
     "dep:audiopus",
     "dep:byteorder",
+    "dep:crypto_secretbox",
     "dep:discortp",
     "dep:reqwest",
     "dep:flume",
@@ -113,7 +114,6 @@ driver = [
     "dep:typemap_rev",
     "dep:url",
     "dep:uuid",
-    "dep:xsalsa20poly1305",
     "tokio?/fs",
     "tokio?/io-util",
     "tokio?/macros",

src/driver/connection/error.rs

@@ -4,11 +4,11 @@ use crate::{
     driver::tasks::{error::Recipient, message::*},
     ws::Error as WsError,
 };
+use crypto_secretbox::Error as CryptoError;
 use flume::SendError;
 use serde_json::Error as JsonError;
 use std::{error::Error as StdError, fmt, io::Error as IoError};
 use tokio::time::error::Elapsed;
-use xsalsa20poly1305::aead::Error as CryptoError;
 
 /// Errors encountered while connecting to a Discord voice server over the driver.
 #[derive(Debug)]

src/driver/connection/mod.rs

@@ -20,6 +20,7 @@ use crate::{
     ws::WsStream,
     ConnectionInfo,
 };
+use crypto_secretbox::{KeyInit, XSalsa20Poly1305 as Cipher};
 use discortp::discord::{IpDiscoveryPacket, IpDiscoveryType, MutableIpDiscoveryPacket};
 use error::{Error, Result};
 use flume::Sender;
@@ -30,7 +31,6 @@ use std::{net::IpAddr, str::FromStr};
 use tokio::{net::UdpSocket, spawn, time::timeout};
 use tracing::{debug, info, instrument};
 use url::Url;
-use xsalsa20poly1305::{KeyInit, XSalsa20Poly1305 as Cipher};
 
 pub(crate) struct Connection {
     pub(crate) info: ConnectionInfo,

src/driver/crypto.rs

@@ -1,17 +1,21 @@
 //! Encryption schemes supported by Discord's secure RTP negotiation.
 use byteorder::{NetworkEndian, WriteBytesExt};
-use discortp::{rtp::RtpPacket, MutablePacket};
-use rand::Rng;
-use std::num::Wrapping;
 #[cfg(any(feature = "receive", test))]
-use xsalsa20poly1305::Tag;
-use xsalsa20poly1305::{
+use crypto_secretbox::Tag;
+use crypto_secretbox::{
     aead::{AeadInPlace, Error as CryptoError},
     Nonce,
+    SecretBox,
     XSalsa20Poly1305 as Cipher,
-    NONCE_SIZE,
-    TAG_SIZE,
 };
+use discortp::{rtp::RtpPacket, MutablePacket};
+use rand::Rng;
+use std::num::Wrapping;
+
+#[cfg(test)]
+pub const KEY_SIZE: usize = SecretBox::<()>::KEY_SIZE;
+pub const NONCE_SIZE: usize = SecretBox::<()>::NONCE_SIZE;
+pub const TAG_SIZE: usize = SecretBox::<()>::TAG_SIZE;
 
 /// Variants of the `XSalsa20Poly1305` encryption scheme.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
@@ -253,8 +257,8 @@ impl CryptoState {
 #[cfg(test)]
 mod test {
     use super::*;
+    use crypto_secretbox::KeyInit;
     use discortp::rtp::MutableRtpPacket;
-    use xsalsa20poly1305::{KeyInit, KEY_SIZE, TAG_SIZE};
 
     #[test]
     fn small_packet_decrypts_error() {

src/driver/tasks/error.rs

@@ -1,9 +1,9 @@
 use super::message::*;
 use crate::ws::Error as WsError;
 use audiopus::Error as OpusError;
+use crypto_secretbox::aead::Error as CryptoError;
 use flume::SendError;
 use std::io::{Error as IoError, ErrorKind as IoErrorKind};
-use xsalsa20poly1305::aead::Error as CryptoError;
 
 #[derive(Debug)]
 pub enum Recipient {

src/driver/tasks/message/mixer.rs

@@ -8,10 +8,10 @@ use crate::{
     driver::{Bitrate, Config, CryptoState},
     input::{AudioStreamError, Compose, Parsed},
 };
+use crypto_secretbox::XSalsa20Poly1305 as Cipher;
 use flume::Sender;
 use std::{net::UdpSocket, sync::Arc};
 use symphonia_core::{errors::Error as SymphoniaError, formats::SeekedTo};
-use xsalsa20poly1305::XSalsa20Poly1305 as Cipher;
 
 pub struct MixerConnection {
     pub cipher: Cipher,

src/driver/tasks/mixer/mod.rs

@@ -15,6 +15,7 @@ use super::{
     error::{Error, Result},
     message::*,
 };
+use crate::driver::crypto::TAG_SIZE;
 use crate::{
     constants::*,
     driver::MixMode,
@@ -53,7 +54,6 @@ use symphonia_core::{
 };
 use tokio::runtime::Handle;
 use tracing::error;
-use xsalsa20poly1305::TAG_SIZE;
 
 #[cfg(test)]
 use crate::driver::test_config::{OutputMessage, OutputMode};

src/driver/tasks/udp_rx/mod.rs

@@ -12,6 +12,7 @@ use crate::{
     Config,
 };
 use bytes::BytesMut;
+use crypto_secretbox::XSalsa20Poly1305 as Cipher;
 use discortp::{
     demux::{self, DemuxedMut},
     rtp::RtpPacket,
@@ -25,7 +26,6 @@ use std::{
 };
 use tokio::{net::UdpSocket, select, time::Instant};
 use tracing::{error, instrument, trace, warn};
-use xsalsa20poly1305::XSalsa20Poly1305 as Cipher;
 
 type RtpSequence = Wrapping<u16>;
 type RtpTimestamp = Wrapping<u32>;

src/driver/test_impls.rs

@@ -2,6 +2,7 @@
 
 use crate::{
     constants::*,
+    driver::crypto::KEY_SIZE,
     input::{
         cached::Compressed,
         codecs::{CODEC_REGISTRY, PROBE},
@@ -10,10 +11,10 @@ use crate::{
     test_utils,
     tracks::LoopState,
 };
+use crypto_secretbox::{KeyInit, XSalsa20Poly1305 as Cipher};
 use flume::{Receiver, Sender};
 use std::{io::Cursor, net::UdpSocket, sync::Arc};
 use tokio::runtime::Handle;
-use xsalsa20poly1305::{KeyInit, XSalsa20Poly1305 as Cipher, KEY_SIZE};
 
 use super::{
     scheduler::*,