Java의 보안 프레임워크를 사용하여 애플리케이션 데이터와 리소스를 보호하는 방법은 무엇입니까?

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.util.Base64;

public class EncryptionUtils {
    private static final String ALGORITHM = "AES";
    private static final String KEY = "mysecretkey";

    public static String encrypt(String plainText) throws Exception {
        SecretKeySpec secretKey = new SecretKeySpec(KEY.getBytes(), ALGORITHM);
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        byte[] encryptedBytes = cipher.doFinal(plainText.getBytes(StandardCharsets.UTF_8));
        return Base64.getEncoder().encodeToString(encryptedBytes);
    }

    public static String decrypt(String encryptedText) throws Exception {
        SecretKeySpec secretKey = new SecretKeySpec(KEY.getBytes(), ALGORITHM);
        Cipher cipher = Cipher.getInstance(ALGORITHM);
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        byte[] decryptedBytes = cipher.doFinal(Base64.getDecoder().decode(encryptedText));
        return new String(decryptedBytes, StandardCharsets.UTF_8);
    }

    public static void main(String[] args) throws Exception {
        String plainText = "Hello, World!";
        String encryptedText = encrypt(plainText);
        String decryptedText = decrypt(encryptedText);

        System.out.println("Plain Text: " + plainText);
        System.out.println("Encrypted Text: " + encryptedText);
        System.out.println("Decrypted Text: " + decryptedText);
    }
}

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
 
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/admin/**").hasRole("ADMIN")
                .antMatchers("/user/**").hasAnyRole("USER", "ADMIN")
                .anyRequest().authenticated()
                .and().formLogin()
                .and().logout().logoutSuccessUrl("/login").permitAll();
    }
 
    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder authenticationManagerBuilder) throws Exception {
        authenticationManagerBuilder.inMemoryAuthentication()
                .withUser("admin").password("{noop}admin").roles("ADMIN")
                .and()
                .withUser("user").password("{noop}user").roles("USER");
    }
 
    @Bean
    public PasswordEncoder passwordEncoder() {
        return NoOpPasswordEncoder.getInstance();
    }
}