feat: initial support for X25519Kyber768Draft00 PQC

.github/workflows/release.yml

@@ -34,6 +34,14 @@ jobs:
             platform: linux/arm64
             tags-suffix: "-slim"
 
+          - target: "musl"
+            platform: linux/amd64
+            tags-suffix: "-slim-pq"
+
+          - target: "musl"
+            platform: linux/arm64
+            tags-suffix: "-slim-pq"
+
           - target: "gnu"
             build-feature: "-s2n"
             platform: linux/amd64
@@ -44,6 +52,26 @@ jobs:
             platform: linux/arm64
             tags-suffix: "-s2n"
 
+          - target: "gnu"
+            build-feature: "-pq"
+            platform: linux/amd64
+            tags-suffix: "-pq"
+
+          - target: "gnu"
+            build-feature: "-pq"
+            platform: linux/arm64
+            tags-suffix: "-pq"
+
+          - target: "gnu"
+            build-feature: "-s2n-pq"
+            platform: linux/amd64
+            tags-suffix: "-s2n-pq"
+
+          - target: "gnu"
+            build-feature: "-s2n"
+            platform: linux/arm64
+            tags-suffix: "-s2n-pq"
+
           - target: "gnu"
             build-feature: "-webpki-roots"
             platform: linux/amd64

.github/workflows/release_docker.yml

@@ -30,6 +30,17 @@ jobs:
               jqtype/rpxy:latest
               ghcr.io/junkurihara/rust-rpxy:latest
 
+          - target: "default-pq"
+            dockerfile: ./docker/Dockerfile
+            platforms: linux/amd64,linux/arm64
+            build-args: |
+              "CARGO_FEATURES=--no-default-features --features=http3-quinn,cache,rustls-backend,acme,post-quantum"
+            tags-suffix: "-pq"
+            # Aliases must be used only for release builds
+            aliases: |
+              jqtype/rpxy:pq
+              ghcr.io/junkurihara/rust-rpxy:pq
+
           - target: "default-slim"
             dockerfile: ./docker/Dockerfile-slim
             build-contexts: |
@@ -42,6 +53,20 @@ jobs:
               jqtype/rpxy:slim
               ghcr.io/junkurihara/rust-rpxy:slim
 
+          - target: "default-slim-pq"
+            dockerfile: ./docker/Dockerfile-slim
+            build-args: |
+              "CARGO_FEATURES=--no-default-features --features=http3-quinn,cache,rustls-backend,acme,post-quantum"
+            build-contexts: |
+              messense/rust-musl-cross:amd64-musl=docker-image://messense/rust-musl-cross:x86_64-musl
+              messense/rust-musl-cross:arm64-musl=docker-image://messense/rust-musl-cross:aarch64-musl
+            platforms: linux/amd64,linux/arm64
+            tags-suffix: "-slim-pq"
+            # Aliases must be used only for release builds
+            aliases: |
+              jqtype/rpxy:slim-pq
+              ghcr.io/junkurihara/rust-rpxy:slim-pq
+
           - target: "s2n"
             dockerfile: ./docker/Dockerfile
             build-args: |
@@ -54,6 +79,18 @@ jobs:
               jqtype/rpxy:s2n
               ghcr.io/junkurihara/rust-rpxy:s2n
 
+          - target: "s2n-pq"
+            dockerfile: ./docker/Dockerfile
+            build-args: |
+              "CARGO_FEATURES=--no-default-features --features=http3-s2n,cache,rustls-backend,acme,post-quantum"
+              "ADDITIONAL_DEPS=pkg-config libssl-dev cmake libclang1 gcc g++"
+            platforms: linux/amd64,linux/arm64
+            tags-suffix: "-s2n-pq"
+            # Aliases must be used only for release builds
+            aliases: |
+              jqtype/rpxy:s2n-pq
+              ghcr.io/junkurihara/rust-rpxy:s2n-pq
+
           - target: "webpki-roots"
             dockerfile: ./docker/Dockerfile
             platforms: linux/amd64,linux/arm64

CHANGELOG.md

@@ -1,15 +1,17 @@
 # CHANGELOG
 
-## 0.9.3 or 0.10.0 (Unreleased)
+## 0.10.0 (Unreleased)
+
+## 0.9.3
 
 ### Improvement
 
+- Feat: Support post-quantum `X25519Kyber768Draft00` for incoming TLS initiation. This is non-default feature [feature: `post-quantum`]. Upstream connection to backend applications does not yet support PQC.
 - Feat: emit WARN messages if there exist unused and unsupported options specified in configuration file.
 - Docs: `rpxy.io` is now available for the official website of `rpxy`.
 - Refactor: lots of minor improvements
 - Deps
 
-
 ## 0.9.2
 
 ### Improvement

README.md

@@ -14,10 +14,12 @@
 
 [^pure_rust]: Doubtfully can be claimed to be written in pure Rust since current `rpxy` is based on `aws-lc-rs` for cryptographic operations.
 
-By default, `rpxy` provides the *TLS connection sanitization* by correctly binding a certificate used to establish a secure channel with the backend application. Specifically, it always keeps the consistency between the given SNI (server name indication) in `ClientHello` of the underlying TLS and the domain name given by the overlaid HTTP HOST header (or URL in Request line) [^1]. Additionally, as a somewhat unstable feature, our `rpxy` can handle the brand-new HTTP/3 connection thanks to [`quinn`](https://github.com/quinn-rs/quinn), [`s2n-quic`](https://github.com/aws/s2n-quic) and [`hyperium/h3`](https://github.com/hyperium/h3).[^h3lib] Furthermore, `rpxy` supports the automatic issuance and renewal of certificates via [TLS-ALPN-01 (RFC8737)](https://www.rfc-editor.org/rfc/rfc8737) of [ACME protocol (RFC8555)](https://www.rfc-editor.org/rfc/rfc8555) thanks to [`rustls-acme`](https://github.com/FlorianUekermann/rustls-acme).
+By default, `rpxy` provides the *TLS connection sanitization* by correctly binding a certificate used to establish a secure channel with the backend application. Specifically, it always keeps the consistency between the given SNI (server name indication) in `ClientHello` of the underlying TLS and the domain name given by the overlaid HTTP HOST header (or URL in Request line) [^1]. Additionally, as a somewhat unstable feature, our `rpxy` can handle the brand-new HTTP/3 connection thanks to [`quinn`](https://github.com/quinn-rs/quinn), [`s2n-quic`](https://github.com/aws/s2n-quic) and [`hyperium/h3`](https://github.com/hyperium/h3).[^h3lib] Furthermore, `rpxy` supports the automatic issuance and renewal of certificates via [TLS-ALPN-01 (RFC8737)](https://www.rfc-editor.org/rfc/rfc8737) of [ACME protocol (RFC8555)](https://www.rfc-editor.org/rfc/rfc8555) thanks to [`rustls-acme`](https://github.com/FlorianUekermann/rustls-acme), and the hybridized post-quantum key exchange [`X25519Kyber768Draft00`](https://datatracker.ietf.org/doc/draft-tls-westerbaan-xyber768d00/)[^kyber] for TLS initiation thanks to `rustls-post-quantum` crate.
 
  [^h3lib]: HTTP/3 libraries are mutually exclusive. You need to explicitly specify `s2n-quic` with `--no-default-features` flag. Also note that if you build `rpxy` with `s2n-quic`, then it requires `openssl` just for building the package.
 
+ [^kyber]: This is not yet a default feature. You need to specify `--features post-quantum` when building `rpxy`. Also note that `X25519Kyber768Draft00` is a draft version yet this is widely used on the Internet. We will update the feature when the newest version (`X25519MLKEM768` in [`ECDHE-MLKEM`](https://www.ietf.org/archive/id/draft-kwiatkowski-tls-ecdhe-mlkem-02.html)) is available.
+
  This project is still *work-in-progress*. But it is already working in some production environments and serves a number of domain names. Furthermore it *significantly outperforms* NGINX and Caddy, e.g., *1.5x faster than NGINX*, in the setting of a very simple HTTP reverse-proxy scenario (See [`bench`](./bench/) directory).
 
  [^1]: We should note that NGINX doesn't guarantee such a consistency by default. To this end, you have to add `if` statement in the configuration file in NGINX.

docker/README.md

@@ -32,12 +32,14 @@ Differences among tags are summarized as follows.
 - `latest`: Built from the `main` branch with default features, running on Ubuntu.
 - `latest-slim`, `slim`: Built by `musl` from the `main` branch with default features, running on Alpine.
 - `latest-s2n`, `s2n`: Built from the `main` branch with the `http3-s2n` feature, running on Ubuntu.
+- `*-pq`: Built with the `post-quantum` feature. This feature supports the post-quantum key exchange using `rustls-post-quantum` crate.
 
 ### Nightly Builds
 
 - `nightly`: Built from the `develop` branch with default features, running on Ubuntu.
 - `nightly-slim`: Built by `musl` from the `develop` branch with default features, running on Alpine.
 - `nightly-s2n`: Built from the `develop` branch with the `http3-s2n` feature, running on Ubuntu.
+- `*-pq`: Built with the `post-quantum` feature. This feature supports the hybridized post-quantum key exchange using `rustls-post-quantum` crate.
 
 ## Caveats
 

rpxy-acme/Cargo.toml

@@ -10,25 +10,29 @@ readme.workspace = true
 edition.workspace = true
 publish.workspace = true
 
+[features]
+post-quantum = ["rustls-post-quantum"]
+
 [dependencies]
 url = { version = "2.5.2" }
 rustc-hash = "2.0.0"
-thiserror = "1.0.65"
+thiserror = "1.0.66"
 tracing = "0.1.40"
 async-trait = "0.1.83"
 base64 = "0.22.1"
 aws-lc-rs = { version = "1.10.0", default-features = false, features = [
   "aws-lc-sys",
 ] }
 blocking = "1.6.1"
-rustls = { version = "0.23.15", default-features = false, features = [
+rustls = { version = "0.23.16", default-features = false, features = [
   "std",
   "aws_lc_rs",
 ] }
 rustls-platform-verifier = { version = "0.3.4" }
 rustls-acme = { path = "../submodules/rustls-acme/", default-features = false, features = [
   "aws-lc-rs",
 ] }
+rustls-post-quantum = { version = "0.1.0", optional = true }
 tokio = { version = "1.41.0", default-features = false }
 tokio-util = { version = "0.7.12", default-features = false }
 tokio-stream = { version = "0.1.16", default-features = false }

rpxy-acme/src/manager.rs

@@ -37,8 +37,11 @@ impl AcmeManager {
     domains: &[String],
     runtime_handle: Handle,
   ) -> Result<Self, RpxyAcmeError> {
+    #[cfg(not(feature = "post-quantum"))]
     // Install aws_lc_rs as default crypto provider for rustls
     let _ = rustls::crypto::CryptoProvider::install_default(rustls::crypto::aws_lc_rs::default_provider());
+    #[cfg(feature = "post-quantum")]
+    let _ = rustls::crypto::CryptoProvider::install_default(rustls_post_quantum::provider());
 
     let acme_registry_dir = acme_registry_dir
       .map(|v| v.to_ascii_lowercase())

rpxy-bin/Cargo.toml

@@ -13,6 +13,8 @@ publish.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [features]
+# default = ["http3-quinn", "cache", "rustls-backend", "acme", "post-quantum"]
+# default = ["http3-s2n", "cache", "rustls-backend", "acme", "post-quantum"]
 default = ["http3-quinn", "cache", "rustls-backend", "acme"]
 # default = ["http3-s2n", "cache", "rustls-backend", "acme"]
 http3-quinn = ["rpxy-lib/http3-quinn"]
@@ -22,6 +24,7 @@ rustls-backend = ["rpxy-lib/rustls-backend"]
 webpki-roots = ["rpxy-lib/webpki-roots"]
 cache = ["rpxy-lib/cache"]
 acme = ["rpxy-lib/acme", "rpxy-acme"]
+post-quantum = ["rpxy-lib/post-quantum"]
 
 [dependencies]
 rpxy-lib = { path = "../rpxy-lib/", default-features = false, features = [
@@ -31,7 +34,7 @@ rpxy-lib = { path = "../rpxy-lib/", default-features = false, features = [
 mimalloc = { version = "*", default-features = false }
 anyhow = "1.0.91"
 rustc-hash = "2.0.0"
-serde = { version = "1.0.213", default-features = false, features = ["derive"] }
+serde = { version = "1.0.214", default-features = false, features = ["derive"] }
 tokio = { version = "1.41.0", default-features = false, features = [
   "net",
   "rt-multi-thread",

rpxy-certs/Cargo.toml

@@ -12,16 +12,17 @@ publish.workspace = true
 
 [features]
 default = ["http3"]
+post-quantum = ["rustls-post-quantum"]
 http3 = []
 
 [dependencies]
 rustc-hash = { version = "2.0.0" }
 tracing = { version = "0.1.40" }
 derive_builder = { version = "0.20.2" }
-thiserror = { version = "1.0.65" }
+thiserror = { version = "1.0.66" }
 hot_reload = { version = "0.1.6" }
 async-trait = { version = "0.1.83" }
-rustls = { version = "0.23.15", default-features = false, features = [
+rustls = { version = "0.23.16", default-features = false, features = [
   "std",
   "aws_lc_rs",
 ] }
@@ -30,6 +31,7 @@ rustls-webpki = { version = "0.102.8", default-features = false, features = [
   "std",
   "aws_lc_rs",
 ] }
+rustls-post-quantum = { version = "0.1.0", optional = true }
 x509-parser = { version = "0.16.0" }
 
 [dev-dependencies]

rpxy-certs/src/lib.rs

@@ -12,7 +12,7 @@ mod log {
 use crate::{error::*, log::*, reloader_service::DynCryptoSource};
 use hot_reload::{ReloaderReceiver, ReloaderService};
 use rustc_hash::FxHashMap as HashMap;
-use rustls::crypto::{aws_lc_rs, CryptoProvider};
+use rustls::crypto::CryptoProvider;
 use std::sync::Arc;
 
 /* ------------------------------------------------ */
@@ -44,8 +44,11 @@ where
   T: CryptoSource<Error = RpxyCertError> + Send + Sync + Clone + 'static,
 {
   info!("Building certificate reloader service");
+  #[cfg(not(feature = "post-quantum"))]
   // Install aws_lc_rs as default crypto provider for rustls
-  let _ = CryptoProvider::install_default(aws_lc_rs::default_provider());
+  let _ = CryptoProvider::install_default(rustls::crypto::aws_lc_rs::default_provider());
+  #[cfg(feature = "post-quantum")]
+  let _ = CryptoProvider::install_default(rustls_post_quantum::provider());
 
   let source = crypto_source_map
     .iter()

rpxy-certs/src/server_crypto.rs

@@ -179,7 +179,10 @@ mod tests {
 
   #[tokio::test]
   async fn test_server_crypto_base_try_into() {
+    #[cfg(not(feature = "post-quantum"))]
     let _ = CryptoProvider::install_default(rustls::crypto::aws_lc_rs::default_provider());
+    #[cfg(feature = "post-quantum")]
+    let _ = CryptoProvider::install_default(rustls_post_quantum::provider());
 
     let mut server_crypto_base = ServerCryptoBase::default();
 

rpxy-lib/Cargo.toml

@@ -28,6 +28,11 @@ native-tls-backend = ["hyper-tls"]
 rustls-backend = ["hyper-rustls"]
 webpki-roots = ["rustls-backend", "hyper-rustls/webpki-tokio"]
 acme = ["dep:rpxy-acme"]
+post-quantum = [
+  "rustls-post-quantum",
+  "rpxy-acme/post-quantum",
+  "rpxy-certs/post-quantum",
+]
 
 [dependencies]
 rand = "0.8.5"
@@ -49,13 +54,13 @@ async-trait = "0.1.83"
 
 # Error handling
 anyhow = "1.0.91"
-thiserror = "1.0.65"
+thiserror = "1.0.66"
 
 # http for both server and client
 http = "1.1.0"
 http-body-util = "0.1.2"
 hyper = { version = "1.5.0", default-features = false }
-hyper-util = { version = "0.1.9", features = ["full"] }
+hyper-util = { version = "0.1.10", features = ["full"] }
 futures-util = { version = "0.3.31", default-features = false }
 futures-channel = { version = "0.3.31", default-features = false }
 
@@ -74,7 +79,8 @@ hyper-rustls = { version = "0.27.3", default-features = false, features = [
 # tls and cert management for server
 rpxy-certs = { path = "../rpxy-certs/", default-features = false }
 hot_reload = "0.1.6"
-rustls = { version = "0.23.15", default-features = false }
+rustls = { version = "0.23.16", default-features = false }
+rustls-post-quantum = { version = "0.1.0", optional = true }
 tokio-rustls = { version = "0.26.0", features = ["early-data"] }
 
 # acme

rpxy-lib/src/lib.rs

@@ -22,7 +22,7 @@ use crate::{
 use futures::future::join_all;
 use hot_reload::ReloaderReceiver;
 use rpxy_certs::ServerCryptoBase;
-use rustls::crypto::{aws_lc_rs, CryptoProvider};
+use rustls::crypto::CryptoProvider;
 use std::sync::Arc;
 use tokio_util::sync::CancellationToken;
 
@@ -101,8 +101,11 @@ pub async fn entrypoint(
     info!("Cache is disabled")
   }
 
+  #[cfg(not(feature = "post-quantum"))]
   // Install aws_lc_rs as default crypto provider for rustls
-  let _ = CryptoProvider::install_default(aws_lc_rs::default_provider());
+  let _ = CryptoProvider::install_default(rustls::crypto::aws_lc_rs::default_provider());
+  #[cfg(feature = "post-quantum")]
+  let _ = CryptoProvider::install_default(rustls_post_quantum::provider());
 
   // 1. build backends, and make it contained in Arc
   let app_manager = Arc::new(backend::BackendAppManager::try_from(app_config_list)?);