# Transitions' password type
`tag_password` is an simple Rust library designed to enhance security by leveraging the type system to statically determine password hashing status. This approach ensures a clear distinction between plain text and hashed passwords in your code, allowing for stronger security measures.
## Features
- **Type-based Password Markers:** Two marker types, Hashed and Plain, are used to distinguish between hashed and plain text passwords. These zero-sized types, combined with PhantomData, facilitate compile-time checks for password status.
- **Argon2 Hashing (Optional):** If the argon2 feature is enabled, the library provides hashing functionality using Argon2, a secure password hashing algorithm.
## Usage
Add the library to your current project using Cargo:
```sh
cargo add tag_password
```
Then create a new password and operate on them
```rust
use tag_password::Password;
// Create a new plain text password
let plain_password = Password::new("my_password");
// Hash the plain text password using Argon2
let hashed_password = plain_password
.hash(None, &salt)
.expect("Hashing should not fail.");
// Verify a hashed password against a plain text password
hashed_password
.verify(None, plain_password)
.expect("Verification should not fail.");
```
## License
This project is licensed under the [MIT License](LICENSE).