Argon2PasswordEncoder.java

import de.mkammerer.argon2.Argon2;
import de.mkammerer.argon2.Argon2Factory;
import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * Argon2 PasswordEncoder implementation {@link PasswordEncoder}
 * based on the argon2-jvm library with recommended default parameters.
 *
 * @see <a href="https://github.com/phxql/argon2-jvm">https://github.com/phxql/argon2-jvm</a> {}
 *
 * @author Serdar Bellikli
 */
public class Argon2PasswordEncoder implements PasswordEncoder {

    /*
     * Recommended parameters
     */
    private static final int ITERATIONS = 2;
    private static final int MEMORY = 65536;
    private static final int PARALLELISM = 1;

    /*
     * Recommended argon2 type
     */
    public static final Argon2Factory.Argon2Types TYPE = Argon2Factory.Argon2Types.ARGON2id;

    /*
     * Thread safe singleton instance
     */
    private static final Argon2 INSTANCE = Argon2Factory.create(TYPE);

    /**
     * {@inheritDoc}
     *
     * Hashes raw password using argon2id
     */
    @Override
    public String encode(CharSequence rawPassword) {
        return INSTANCE.hash(ITERATIONS, MEMORY, PARALLELISM, rawPassword.toString());
    }

    /**
     * {@inheritDoc}
     *
     * Compares raw password with encoded one using argon2id
     */
    @Override
    public boolean matches(CharSequence rawPassword, String encodedPassword) {
        return INSTANCE.verify(encodedPassword, rawPassword.toString());
    }
}