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

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

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

.secret("{noop}secret")