Add aws_lc_rs feature and set it as default (#56)

.github/workflows/rust.yml

@@ -21,12 +21,17 @@ jobs:
 
     runs-on: ${{ matrix.os }}
 
+    env:
+      AWS_LC_SYS_NO_ASM: 1
+
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ matrix.rust }}
-      - run: cargo test --all-features --all-targets
+      - run: cargo check
+      - run: cargo test
+      - run: cargo test --no-default-features --features hyper-rustls,aws-lc-rs
 
   msrv:
     runs-on: ubuntu-latest

Cargo.toml

@@ -12,15 +12,19 @@ keywords = ["letsencrypt", "acme"]
 categories = ["web-programming", "api-bindings"]
 
 [features]
-default = ["hyper-rustls"]
+default = ["hyper-rustls", "ring"]
+ring = ["dep:ring", "hyper-rustls?/ring", "rcgen/ring"]
+aws-lc-rs = ["dep:aws-lc-rs", "hyper-rustls?/aws-lc-rs", "rcgen/aws_lc_rs"]
+fips = ["aws-lc-rs", "aws-lc-rs?/fips"]
 
 [dependencies]
+aws-lc-rs = { version = "1.8.0", optional = true }
 base64 = "0.21.0"
 hyper = { version = "1.3.1", features = ["client", "http1", "http2"] }
-hyper-rustls = { version = "0.27", default-features = false, features = ["http1", "http2", "native-tokio", "tls12", "rustls-native-certs", "ring"], optional = true }
-hyper-util = { version = "0.1.5", features = ["client", "client-legacy", "http1", "http2", "tokio"]}
+hyper-rustls = { version = "0.27", default-features = false, features = ["http1", "http2", "native-tokio", "tls12", "rustls-native-certs"], optional = true }
+hyper-util = { version = "0.1.5", features = ["client", "client-legacy", "http1", "http2", "tokio"] }
 http-body-util = "0.1.2"
-ring = { version = "0.17", features = ["std"] }
+ring = { version = "0.17", features = ["std"], optional = true }
 rustls-pki-types = "1.1.0"
 serde = { version = "1.0.104", features = ["derive"] }
 serde_json = "1.0.78"
@@ -29,7 +33,7 @@ thiserror = "1.0.30"
 [dev-dependencies]
 anyhow = "1.0.66"
 clap = { version = "4.0.29", features = ["derive"] }
-rcgen = "0.12"
+rcgen = { version = "0.12", default-features = false, features = ["pem"] }
 tokio = { version = "1.22.0", features = ["macros", "rt", "rt-multi-thread", "time"] }
 tracing = "0.1.37"
 tracing-subscriber = "0.3.16"

src/lib.rs

@@ -3,6 +3,10 @@
 #![warn(unreachable_pub)]
 #![warn(missing_docs)]
 
+#[cfg(feature = "aws-lc-rs")]
+pub(crate) use aws_lc_rs as ring_like;
+#[cfg(all(feature = "ring", not(feature = "aws-lc-rs")))]
+pub(crate) use ring as ring_like;
 use std::fmt;
 use std::future::Future;
 use std::pin::Pin;
@@ -13,14 +17,14 @@ use http_body_util::{BodyExt, Full};
 use hyper::body::{Bytes, Incoming};
 use hyper::header::{CONTENT_TYPE, LOCATION};
 use hyper::{Method, Request, Response, StatusCode};
-#[cfg(feature = "hyper-rustls")]
-use hyper_util::client::legacy::connect::{Connect, HttpConnector};
+use hyper_util::client::legacy::connect::Connect;
 use hyper_util::client::legacy::Client as HyperClient;
-use hyper_util::rt::TokioExecutor;
-use ring::digest::{digest, SHA256};
-use ring::rand::SystemRandom;
-use ring::signature::{EcdsaKeyPair, ECDSA_P256_SHA256_FIXED_SIGNING};
-use ring::{hmac, pkcs8};
+#[cfg(feature = "hyper-rustls")]
+use hyper_util::{client::legacy::connect::HttpConnector, rt::TokioExecutor};
+use ring_like::digest::{digest, SHA256};
+use ring_like::rand::SystemRandom;
+use ring_like::signature::{EcdsaKeyPair, ECDSA_P256_SHA256_FIXED_SIGNING};
+use ring_like::{hmac, pkcs8};
 use serde::de::DeserializeOwned;
 use serde::Serialize;
 
@@ -555,7 +559,10 @@ impl Key {
     fn generate() -> Result<(Self, pkcs8::Document), Error> {
         let rng = SystemRandom::new();
         let pkcs8 = EcdsaKeyPair::generate_pkcs8(&ECDSA_P256_SHA256_FIXED_SIGNING, &rng)?;
+        #[cfg(all(feature = "ring", not(feature = "aws-lc-rs")))]
         let key = EcdsaKeyPair::from_pkcs8(&ECDSA_P256_SHA256_FIXED_SIGNING, pkcs8.as_ref(), &rng)?;
+        #[cfg(feature = "aws-lc-rs")]
+        let key = EcdsaKeyPair::from_pkcs8(&ECDSA_P256_SHA256_FIXED_SIGNING, pkcs8.as_ref())?;
         let thumb = BASE64_URL_SAFE_NO_PAD.encode(Jwk::thumb_sha256(&key)?);
 
         Ok((
@@ -571,7 +578,11 @@ impl Key {
 
     fn from_pkcs8_der(pkcs8_der: &[u8]) -> Result<Self, Error> {
         let rng = SystemRandom::new();
+        #[cfg(all(feature = "ring", not(feature = "aws-lc-rs")))]
         let key = EcdsaKeyPair::from_pkcs8(&ECDSA_P256_SHA256_FIXED_SIGNING, pkcs8_der, &rng)?;
+        #[cfg(feature = "aws-lc-rs")]
+        let key = EcdsaKeyPair::from_pkcs8(&ECDSA_P256_SHA256_FIXED_SIGNING, pkcs8_der)?;
+
         let thumb = BASE64_URL_SAFE_NO_PAD.encode(Jwk::thumb_sha256(&key)?);
 
         Ok(Self {
@@ -584,7 +595,7 @@ impl Key {
 }
 
 impl Signer for Key {
-    type Signature = ring::signature::Signature;
+    type Signature = ring_like::signature::Signature;
 
     fn header<'n, 'u: 'n, 's: 'u>(&'s self, nonce: Option<&'n str>, url: &'u str) -> Header<'n> {
         debug_assert!(nonce.is_some());

src/types.rs

@@ -1,11 +1,15 @@
 use std::fmt;
 
+#[cfg(feature = "aws-lc-rs")]
+pub(crate) use aws_lc_rs as ring_like;
 use base64::prelude::{Engine, BASE64_URL_SAFE_NO_PAD};
 use http_body_util::BodyExt;
 use hyper::body::Incoming;
 use hyper::Response;
-use ring::digest::{digest, Digest, SHA256};
-use ring::signature::{EcdsaKeyPair, KeyPair};
+#[cfg(all(feature = "ring", not(feature = "aws-lc-rs")))]
+pub(crate) use ring as ring_like;
+use ring_like::digest::{digest, Digest, SHA256};
+use ring_like::signature::{EcdsaKeyPair, KeyPair};
 use rustls_pki_types::CertificateDer;
 use serde::de::DeserializeOwned;
 use serde::ser::SerializeMap;
@@ -25,10 +29,10 @@ pub enum Error {
     Base64(#[from] base64::DecodeError),
     /// Failed from cryptographic operations
     #[error("cryptographic operation failed: {0}")]
-    Crypto(#[from] ring::error::Unspecified),
+    Crypto(#[from] ring_like::error::Unspecified),
     /// Failed to instantiate a private key
     #[error("invalid key bytes: {0}")]
-    CryptoKey(#[from] ring::error::KeyRejected),
+    CryptoKey(#[from] ring_like::error::KeyRejected),
     /// HTTP failure
     #[error("HTTP request failure: {0}")]
     Http(#[from] hyper::http::Error),