Function hash_password 

pub fn hash_password(
    password: &[u8],
    salt: &[u8],
    params: &Params,
) -> Result<String, Argon2Error>

Hash a password and return the PHC-encoded string.

Example

use crypto::argon2::{hash_password, verify_password, Params};

let encoded = hash_password(
    b"correct horse battery staple",
    b"randomsalt123456",
    &Params { iterations: 3, memory: 65536, parallelism: 4, tag_length: 32 },
).unwrap();

assert!(verify_password(b"correct horse battery staple", &encoded).is_ok());
assert!(verify_password(b"wrong password", &encoded).is_err());