refactor: Clean up Argon2 password hashing implementation and remove unused configuration constants

imphnen-libs/src/argon/mod.rs

@@ -4,18 +4,13 @@
 //! The hashing parameters are configured for a balance between security and performance.
 
 use argon2::{
-    Argon2,
     password_hash::{
-        Error, PasswordHash, PasswordHasher, PasswordVerifier, SaltString,
-        rand_core::OsRng,
+        rand_core::OsRng, Error, PasswordHash, PasswordHasher, PasswordVerifier,
+        SaltString,
     },
+    Argon2,
 };
 
-// Configuration constants for Argon2 hashing
-const MEMORY_COST: u32 = 1024; // 1MB
-const TIME_COST: u32 = 1;     // 1 iteration
-const PARALLELISM: u32 = 1;   // 1 thread
-
 /// Hash a password using Argon2id algorithm.
 ///
 /// This function generates a cryptographically secure salt and hashes the password
@@ -38,12 +33,7 @@ const PARALLELISM: u32 = 1;   // 1 thread
 /// ```
 pub fn hash_password(password: &str) -> Result<String, Error> {
     let salt = SaltString::generate(&mut OsRng);
-    let argon2 = Argon2::new(
-        argon2::Algorithm::Argon2id,
-        argon2::Version::V0x13,
-        argon2::Params::new(MEMORY_COST, TIME_COST, PARALLELISM, None).unwrap(),
-    );
-
+    let argon2 = Argon2::default();
     let password_hash = argon2
         .hash_password(password.as_bytes(), &salt)?
         .to_string();
@@ -75,7 +65,6 @@ pub fn hash_password(password: &str) -> Result<String, Error> {
 pub fn verify_password(password: &str, hash: &str) -> Result<bool, Error> {
     let parsed_hash = PasswordHash::new(hash)?;
     let argon2 = Argon2::default();
-
     match argon2.verify_password(password.as_bytes(), &parsed_hash) {
         Ok(_) => Ok(true),
         Err(_) => Ok(false),