use scryptenc::Params;
let data = b"Hello, world!\n";
let passphrase = "passphrase";
// Encrypt `data` using `passphrase`.
let ciphertext = scryptenc::encrypt(data, passphrase);
assert_ne!(ciphertext, data);
// And extract the scrypt parameters from it.
let params = Params::new(&ciphertext).unwrap();
assert_eq!(params.log_n(), 17);
assert_eq!(params.n(), u64::pow(2, 17));
assert_eq!(params.r(), 8);
assert_eq!(params.p(), 1);
// And decrypt it back.
let plaintext = scryptenc::decrypt(ciphertext, passphrase).unwrap();
assert_eq!(plaintext, data);