Spring Security 5 : There is no PasswordEncoder mapped for the id “null”

Question

I am migrating from Spring Boot 1.4.9 to Spring Boot 2.0 and also to Spring Security 5 and I am trying to do authenticate via OAuth 2. But I am getting this error:

java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id "null

From the documentation of Spring Security 5, I get to know that storage format for password is changed.

In my current code I have created my password encoder bean as:

@Bean
public BCryptPasswordEncoder passwordEncoder() {
    return new BCryptPasswordEncoder();
}

However it was giving me below error:

Encoded password does not look like BCrypt

So I update the encoder as per the Spring Security 5 document to:

@Bean
public PasswordEncoder passwordEncoder() {
    return PasswordEncoderFactories.createDelegatingPasswordEncoder();
}

Now if I can see password in database it is storing as

{bcrypt}$2a$10$LoV/3z36G86x6Gn101aekuz3q9d7yfBp3jFn7dzNN/AL5630FyUQ

With that 1st error gone and now when I am trying to do authentication I am getting below error:

java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id "null

To solve this issue I tried all the below questions from Stackoverflow:

• Spring Boot PasswordEncoder Error

• Spring Oauth2. Password encoder is not set in DaoAuthenticationProvider

Here is a question similar to mine but not answerd:

• Spring Security 5 - Password Migration

NOTE: I am already storing encrypted password in database so no need to encode again in UserDetailsService.

In the Spring security 5 documentation they suggested you can handle this exception using:

DelegatingPasswordEncoder.setDefaultPasswordEncoderForMatches(PasswordEncoder)

If this is the fix then where should I put it? I have tried to put it in PasswordEncoder bean like below but it wasn't working:

DelegatingPasswordEncoder def = new DelegatingPasswordEncoder(idForEncode, encoders);
def.setDefaultPasswordEncoderForMatches(passwordEncoder);

MyWebSecurity class

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;

    @Bean
    public PasswordEncoder passwordEncoder() {
        return PasswordEncoderFactories.createDelegatingPasswordEncoder();
    }

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(userDetailsService).passwordEncoder(passwordEncoder());
    }

    @Override
    public void configure(WebSecurity web) throws Exception {

        web
                .ignoring()
                .antMatchers(HttpMethod.OPTIONS)
                .antMatchers("/api/user/add");
    }

    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }
}

MyOauth2 Configuration

@Configuration
@EnableAuthorizationServer
protected static class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

    @Bean
    public TokenStore tokenStore() {
        return new InMemoryTokenStore();
    }

    @Autowired
    @Qualifier("authenticationManagerBean")
    private AuthenticationManager authenticationManager;


    @Bean
    public TokenEnhancer tokenEnhancer() {
        return new CustomTokenEnhancer();
    }

    @Bean
    public DefaultAccessTokenConverter accessTokenConverter() {
        return new DefaultAccessTokenConverter();
    }

    @Override
    public void configure(AuthorizationServerEndpointsConfigurer endpoints)
            throws Exception {
        endpoints
                .tokenStore(tokenStore())
                .tokenEnhancer(tokenEnhancer())
                .accessTokenConverter(accessTokenConverter())
                .authenticationManager(authenticationManager);
    }

    @Override
    public void configure(ClientDetailsServiceConfigurer clients) throws Exception {
        clients
                .inMemory()
                .withClient("test")
                .scopes("read", "write")
                .authorities(Roles.ADMIN.name(), Roles.USER.name())
                .authorizedGrantTypes("password", "refresh_token")
                .secret("secret")
                .accessTokenValiditySeconds(1800);
    }
}

Please guide me with this issue. I have spend hours to fix this but not able to fix.

Answer 1

When you are configuring the ClientDetailsServiceConfigurer, you have to also apply the new password storage format to the client secret.

.secret("{noop}secret")

Answer 2

For anyone facing the same issue and not in need of a secure solution - for testing and debugging mainly - in memory users can still be configured.

This is just for playing around - no real world scenario.

The approach used below is deprecated.

This is where I got it from:

• source
• reference, also mentioned in the source above

---

Within your WebSecurityConfigurerAdapter add the following:

@SuppressWarnings("deprecation")
@Bean
public static NoOpPasswordEncoder passwordEncoder() {
return (NoOpPasswordEncoder) NoOpPasswordEncoder.getInstance();
}

Here, obviously, passwords are hashed, but still are available in memory.

---

Of course, you could also use a real PasswordEncoder like BCryptPasswordEncoder and prefix the password with the correct id:

// Create an encoder with strength 16
BCryptPasswordEncoder encoder = new BCryptPasswordEncoder(16);
String result = encoder.encode("myPassword");
assertTrue(encoder.matches("myPassword", result));

Answer 3

Add .password("{noop}password") to Security config file.

For example :

auth.inMemoryAuthentication()
        .withUser("admin").roles("ADMIN").password("{noop}password");