chore: Move sodium init integration into rosenpass-sodium crate

Cargo.lock

@@ -1025,6 +1025,7 @@ dependencies = [
  "oqs-sys",
  "paste",
  "rosenpass-constant-time",
+ "rosenpass-sodium",
  "rosenpass-util",
  "serde",
  "stacker",
@@ -1038,6 +1039,16 @@ dependencies = [
 name = "rosenpass-constant-time"
 version = "0.1.0"
 
+[[package]]
+name = "rosenpass-sodium"
+version = "0.1.0"
+dependencies = [
+ "anyhow",
+ "libsodium-sys-stable",
+ "log",
+ "rosenpass-util",
+]
+
 [[package]]
 name = "rosenpass-util"
 version = "0.1.0"

Cargo.toml

@@ -5,6 +5,7 @@ members = [
     "rosenpass",
     "rosenpass-util",
     "rosenpass-constant-time",
+    "rosenpass-sodium",
 ]
 
 [workspace.metadata.release]

rosenpass-sodium/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+name = "rosenpass-sodium"
+authors = ["Karolin Varner <karo@cupdev.net>", "wucke13 <wucke13@gmail.com>"]
+version = "0.1.0"
+edition = "2021"
+license = "MIT OR Apache-2.0"
+description = "Rosenpass internal bindings to libsodium"
+homepage = "https://rosenpass.eu/"
+repository = "https://github.com/rosenpass/rosenpass"
+readme = "readme.md"
+
+[dependencies]
+rosenpass-util = { path = "../rosenpass-util" }
+anyhow = { version = "1.0.71", features = ["backtrace"] }
+libsodium-sys-stable = { version = "1.19.28", features = ["use-pkg-config"] }
+log = { version = "0.4.17" }

rosenpass-sodium/readme.md

@@ -0,0 +1,5 @@
+# Rosenpass internal libsodium bindings
+
+Rosenpass internal library providing bindings to libsodium.
+
+This is an internal library; not guarantee is made about its API at this point in time.

rosenpass-sodium/src/lib.rs

@@ -0,0 +1,16 @@
+use libsodium_sys as libsodium;
+
+macro_rules! sodium_call {
+    ($name:ident, $($args:expr),*) => { ::rosenpass_util::attempt!({
+        anyhow::ensure!(unsafe{libsodium::$name($($args),*)} > -1,
+            "Error in libsodium's {}.", stringify!($name));
+        Ok(())
+    })};
+    ($name:ident) => { sodium_call!($name, ) };
+}
+
+#[inline]
+pub fn init() -> anyhow::Result<()> {
+    log::trace!("initializing libsodium");
+    sodium_call!(sodium_init)
+}

rosenpass/Cargo.toml

@@ -16,6 +16,7 @@ harness = false
 [dependencies]
 rosenpass-util = { path = "../rosenpass-util" }
 rosenpass-constant-time = { path = "../rosenpass-constant-time" }
+rosenpass-sodium = { path = "../rosenpass-sodium" }
 anyhow = { version = "1.0.71", features = ["backtrace"] }
 static_assertions = "1.1.0"
 memoffset = "0.9.0"
@@ -24,8 +25,8 @@ oqs-sys = { version = "0.8", default-features = false, features = ['classic_mcel
 lazy_static = "1.4.0"
 thiserror = "1.0.40"
 paste = "1.0.12"
-log = { version = "0.4.17", optional = true }
-env_logger = { version = "0.10.0", optional = true }
+log = { version = "0.4.17" }
+env_logger = { version = "0.10.0" }
 serde = { version = "1.0.163", features = ["derive"] }
 toml = "0.7.4"
 clap = { version = "4.3.0", features = ["derive"] }
@@ -38,6 +39,3 @@ anyhow = "1.0.71"
 criterion = "0.4.0"
 test_bin = "0.4.0"
 stacker = "0.1.15"
-
-[features]
-default = ["log", "env_logger"]

rosenpass/src/main.rs

@@ -1,11 +1,18 @@
 use log::error;
-use rosenpass::{cli::Cli, sodium::sodium_init};
+use rosenpass::cli::Cli;
+use rosenpass_util::attempt;
 use std::process::exit;
 
 /// Catches errors, prints them through the logger, then exits
 pub fn main() {
     env_logger::init();
-    match sodium_init().and_then(|()| Cli::run()) {
+
+    let res = attempt!({
+        rosenpass_sodium::init()?;
+        Cli::run()
+    });
+
+    match res {
         Ok(_) => {}
         Err(e) => {
             error!("{e}");

rosenpass/src/protocol.rs

@@ -25,8 +25,8 @@
 //! };
 //! # fn main() -> anyhow::Result<()> {
 //!
-//! // always init libsodium before anything
-//! rosenpass::sodium::sodium_init()?;
+//! // always initialize libsodium before anything
+//! rosenpass_sodium::init()?;
 //!
 //! // initialize secret and public key for peer a ...
 //! let (mut peer_a_sk, mut peer_a_pk) = (SSk::zero(), SPk::zero());
@@ -1750,7 +1750,7 @@ mod test {
     /// Through all this, the handshake should still successfully terminate;
     /// i.e. an exchanged key must be produced in both servers.
     fn handles_incorrect_size_messages() {
-        crate::sodium::sodium_init().unwrap();
+        rosenpass_sodium::init().unwrap();
 
         stacker::grow(8 * 1024 * 1024, || {
             const OVERSIZED_MESSAGE: usize = ((MAX_MESSAGE_LEN as f32) * 1.2) as usize;

rosenpass/src/sodium.rs

@@ -2,7 +2,6 @@
 
 use anyhow::{ensure, Result};
 use libsodium_sys as libsodium;
-use log::trace;
 use rosenpass_constant_time::xor_into;
 use rosenpass_util::attempt;
 use static_assertions::const_assert_eq;
@@ -34,12 +33,6 @@ macro_rules! sodium_call {
     ($name:ident) => { sodium_call!($name, ) };
 }
 
-#[inline]
-pub fn sodium_init() -> Result<()> {
-    trace!("initializing libsodium");
-    sodium_call!(sodium_init)
-}
-
 #[inline]
 pub fn sodium_memcmp(a: &[u8], b: &[u8]) -> bool {
     a.len() == b.len()