Password hashing helpers

Cargo.lock

@@ -352,6 +352,7 @@ dependencies = [
  "chrono 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl 0.10.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rust-argon2 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.115 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.57 (registry+https://github.com/rust-lang/crates.io-index)",

Cargo.toml

@@ -19,12 +19,13 @@ anyhow = "1.0.32"
 askama = "0.10.3"
 chrono = { version = "0.4.13", features = ["serde"] }
 futures = "0.3.5"
+rand = "0.7.3"
 rust-argon2 = "0.8.2"
 serde = { version = "1.0.115", features = ["derive"] }
 serde_json = "1.0.57"
 sqlx = { version = "0.4.0-beta.1", features = ["chrono", "macros", "migrate", "offline", "runtime-tokio", "sqlite"], default-features = false }
 structopt = "0.3.16"
-tokio = { version = "0.2.22", features = ["blocking", "fs", "rt-core"] }
+tokio = { version = "0.2.22", features = ["blocking", "fs", "rt-threaded"] }
 tracing = "0.1.19"
 tracing-futures = "0.2.4"
 tracing-subscriber = "0.2.11"

src/auth.rs

@@ -0,0 +1,18 @@
+use anyhow::Result;
+use argon2::Config;
+use rand::Rng;
+use tokio::task;
+
+// TODO: Allow custom configuration
+async fn hash(password: Vec<u8>) -> Result<String> {
+    let config = Config::default();
+    Ok(task::spawn_blocking(move || {
+        let salt: [u8; 16] = rand::thread_rng().gen();
+        argon2::hash_encoded(&password, &salt[..], &config)
+    })
+    .await??)
+}
+
+async fn verify(encoded: String, password: Vec<u8>) -> Result<bool> {
+    Ok(task::spawn_blocking(move || argon2::verify_encoded(&encoded, &password)).await??)
+}

src/main.rs

@@ -1,3 +1,4 @@
+mod auth;
 mod config;
 mod db;
 mod routes;