Hash a Password with Argon2 (Defaults)

Demonstrates Crypt2.Argon2HashPassword, which hashes a password with Argon2 and returns a PHC-format string. Passing an empty options string uses all defaults, including a random salt.

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Crypt2;

public class ChilkatExample {

    public static void main(String[] args) {
        Crypt2 crypt = new Crypt2();

        // The password should come from a secure source rather than being hard-coded.
        String password = "correct horse battery staple";

        // Hash the password using all defaults by passing an empty options string.  The defaults are
        // Argon2id, version 19, 3 iterations, 64 MB of memory, 1 lane, a 32-byte hash, and a 16-byte random
        // salt.  A random salt is generated automatically, which is what should normally happen.
        String phcHash;
        try {
            phcHash = crypt.argon2HashPassword(password, "");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // The returned PHC-format string records the variant, version, cost parameters, salt, and hash --
        // everything needed to verify the password later.  Store the whole string.
        System.out.println(phcHash);
    }
}