1 files changed, 31 insertions, 0 deletions
diff --git a/src/password.rs b/src/password.rs
new file mode 100644
index 0000000..b14f728
--- /dev/null
+++ b/src/password.rs
@@ -0,0 +1,31 @@
+use argon2::Argon2;
+use password_hash::{PasswordHash, PasswordHasher, PasswordVerifier, SaltString};
+use rand_core::OsRng;
+
+#[derive(Debug, sqlx::Type)]
+#[sqlx(transparent)]
+pub struct StoredHash(String);
+
+impl StoredHash {
+    pub fn new(password: &str) -> Result<Self, password_hash::Error> {
+        let salt = SaltString::generate(&mut OsRng);
+        let argon2 = Argon2::default();
+        let hash = argon2
+            .hash_password(password.as_bytes(), &salt)?
+            .to_string();
+        Ok(Self(hash))
+    }
+
+    pub fn verify(&self, password: &str) -> Result<bool, password_hash::Error> {
+        let hash = PasswordHash::new(&self.0)?;
+
+        match Argon2::default().verify_password(password.as_bytes(), &hash) {
+            // Successful authentication, not an error
+            Ok(()) => Ok(true),
+            // Unsuccessful authentication, also not an error
+            Err(password_hash::errors::Error::Password) => Ok(false),
+            // Password validation failed for some other reason, treat as an error
+            Err(err) => Err(err),
+        }
+    }
+}