ChallengeablePasswordCredential (PingFederate Server SDK)

```
public interface ChallengeablePasswordCredential
```
Implemented by a PasswordCredentialValidator to support 2-Factor authentication using a challenge question.

Since:

7.1

See Also:

PasswordCredentialValidator

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`PasswordChallengeResult`	`challenge(String username, String password, Object state)`	Challenge a user to answer a security question.

- Method Detail
  - challenge
```
PasswordChallengeResult challenge(String username,
                                  String password,
                                  Object state)
```
    Challenge a user to answer a security question.
    
    Parameters:
    
    username - name of the user attempting to sign in
    
    password - the user's password
    
    state - an opaque object containing state used to preserve state during a 2-Factor authentication.
    
    Returns:
    
    PasswordChallengeResult an object containing attributes returned as a result of this challenge.
    
    Throws:
    
    PasswordValidationException - for system errors
    
    PasswordCredentialValidatorAuthnException - for user authentication errors to prevent the user from answering a challenge question.
    
    PasswordCredentialChallengeException - to prompt or re-prompt the user to answer a challenge question.