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+# Rust-argon2
+
+Rust library for hashing passwords using
+[Argon2](https://github.com/P-H-C/phc-winner-argon2), the password-hashing
+function that won the
+[Password Hashing Competition (PHC)](https://password-hashing.net).
+
+## Usage
+
+To use `rust-argon2`, add the following to your Cargo.toml:
+
+```toml
+[dependencies]
+rust-argon2 = "0.5"
+```
+
+And the following to your crate root:
+
+```rust
+extern crate argon2;
+```
+
+
+## Examples
+
+Create a password hash using the defaults and verify it:
+
+```rust
+use argon2::{self, Config};
+
+let password = b"password";
+let salt = b"randomsalt";
+let config = Config::default();
+let hash = argon2::hash_encoded(password, salt, &config).unwrap();
+let matches = argon2::verify_encoded(&hash, password).unwrap();
+assert!(matches);
+```
+
+Create a password hash with custom settings and verify it:
+
+```rust
+use argon2::{self, Config, ThreadMode, Variant, Version};
+
+let password = b"password";
+let salt = b"othersalt";
+let config = Config {
+    variant: Variant::Argon2i,
+    version: Version::Version13,
+    mem_cost: 65536,
+    time_cost: 10,
+    lanes: 4,
+    thread_mode: ThreadMode::Parallel,
+    secret: &[],
+    ad: &[],
+    hash_length: 32
+};
+let hash = argon2::hash_encoded(password, salt, &config).unwrap();
+let matches = argon2::verify_encoded(&hash, password).unwrap();
+assert!(matches);
+```
+
+
+## Limitations
+
+This crate has the same limitation as the `blake2-rfc` crate that it uses.
+It does not attempt to clear potentially sensitive data from its work
+memory. To do so correctly without a heavy performance penalty would
+require help from the compiler. It's better to not attempt to do so than to
+present a false assurance.
+
+This version uses the standard implementation and does not yet implement
+optimizations. Therefore, it is not the fastest implementation available.
+
+
+## License
+
+Rust-argon2 is dual licensed under the [MIT](LICENSE-MIT) and
+[Apache 2.0](LICENSE-APACHE) licenses, the same licenses as the Rust compiler.
+
+
+## Contributions
+
+Contributions are welcome. By submitting a pull request you are agreeing to
+make you work available under the license terms of the Rust-argon2 project.
+