Request Syntax Request Parameters Response Syntax Response Elements Errors See Also

AdminRespondToAuthChallenge

Responds to an authentication challenge, as an administrator.

Note

This action might generate an SMS text message. Starting June 1, 2021, U.S. telecom carriers require that you register an origination phone number before you can send SMS messages to U.S. phone numbers. If you use SMS text messages in Amazon Cognito, you must register a phone number with Amazon Pinpoint. Cognito will use the the registered number automatically. Otherwise, Cognito users that must receive SMS messages might be unable to sign up, activate their accounts, or sign in.

If you have never used SMS text messages with Amazon Cognito or any other AWS service, Amazon SNS might place your account in SMS sandbox. In sandbox mode , you’ll have limitations, such as sending messages to only verified phone numbers. After testing in the sandbox environment, you can move out of the SMS sandbox and into production. For more information, see SMS message settings for Cognito User Pools in the Amazon Cognito Developer Guide.

Calling this action requires developer credentials.

Request Syntax


{
   "AnalyticsMetadata": { 
      "AnalyticsEndpointId": "string"
   },
   "ChallengeName": "string",
   "ChallengeResponses": { 
      "string" : "string" 
   },
   "ClientId": "string",
   "ClientMetadata": { 
      "string" : "string" 
   },
   "ContextData": { 
      "EncodedData": "string",
      "HttpHeaders": [ 
         { 
            "headerName": "string",
            "headerValue": "string"
         }
      ],
      "IpAddress": "string",
      "ServerName": "string",
      "ServerPath": "string"
   },
   "Session": "string",
   "UserPoolId": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

AnalyticsMetadata

The analytics metadata for collecting Amazon Pinpoint metrics for AdminRespondToAuthChallenge calls.

Type: AnalyticsMetadataType object

Required: No

ChallengeName

The challenge name. For more information, see AdminInitiateAuth.

Type: String

Required: Yes

ChallengeResponses

The challenge responses. These are inputs corresponding to the value of ChallengeName, for example:

SMS_MFA: SMS_MFA_CODE, USERNAME, SECRET_HASH (if app client is configured with client secret).
PASSWORD_VERIFIER: PASSWORD_CLAIM_SIGNATURE, PASSWORD_CLAIM_SECRET_BLOCK, TIMESTAMP, USERNAME, SECRET_HASH (if app client is configured with client secret).

Note

PASSWORD_VERIFIER requires DEVICE_KEY when signing in with a remembered device.
ADMIN_NO_SRP_AUTH: PASSWORD, USERNAME, SECRET_HASH (if app client is configured with client secret).
NEW_PASSWORD_REQUIRED: NEW_PASSWORD, any other required attributes, USERNAME, SECRET_HASH (if app client is configured with client secret).
MFA_SETUP requires USERNAME, plus you need to use the session value returned by VerifySoftwareToken in the Session parameter.

The value of the USERNAME attribute must be the user's actual username, not an alias (such as email address or phone number). To make this easier, the AdminInitiateAuth response includes the actual username value in the USERNAMEUSER_ID_FOR_SRP attribute, even if you specified an alias in your call to AdminInitiateAuth.

Type: String to string map

Required: No

ClientId

The app client ID.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 128.

Pattern: [\w+]+

Required: Yes

ClientMetadata

A map of custom key-value pairs that you can provide as input for any custom workflows that this action triggers.

You create custom workflows by assigning AWS Lambda functions to user pool triggers. When you use the AdminRespondToAuthChallenge API action, Amazon Cognito invokes any functions that are assigned to the following triggers: pre sign-up, custom message, post authentication, user migration, pre token generation, define auth challenge, create auth challenge, and verify auth challenge response. When Amazon Cognito invokes any of these functions, it passes a JSON payload, which the function receives as input. This payload contains a clientMetadata attribute, which provides the data that you assigned to the ClientMetadata parameter in your AdminRespondToAuthChallenge request. In your function code in AWS Lambda, you can process the clientMetadata value to enhance your workflow for your specific needs.

For more information, see Customizing User Pool Workflows with Lambda Triggers in the Amazon Cognito Developer Guide.

Note

Take the following limitations into consideration when you use the ClientMetadata parameter:

Amazon Cognito does not store the ClientMetadata value. This data is available only to AWS Lambda triggers that are assigned to a user pool to support custom workflows. If your user pool configuration does not include triggers, the ClientMetadata parameter serves no purpose.
Amazon Cognito does not validate the ClientMetadata value.
Amazon Cognito does not encrypt the the ClientMetadata value, so don't use it to provide sensitive information.

Type: String to string map

Required: No

ContextData

Contextual data such as the user's device fingerprint, IP address, or location used for evaluating the risk of an unexpected event by Amazon Cognito advanced security.

Type: ContextDataType object

Required: No

Session

The session which should be passed both ways in challenge-response calls to the service. If InitiateAuth or RespondToAuthChallenge API call determines that the caller needs to go through another challenge, they return a session with other challenge parameters. This session should be passed as it is to the next RespondToAuthChallenge API call.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Required: No

UserPoolId

The ID of the Amazon Cognito user pool.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 55.

Pattern: [\w-]+_[0-9a-zA-Z]+

Required: Yes

Response Syntax


{
   "AuthenticationResult": { 
      "AccessToken": "string",
      "ExpiresIn": number,
      "IdToken": "string",
      "NewDeviceMetadata": { 
         "DeviceGroupKey": "string",
         "DeviceKey": "string"
      },
      "RefreshToken": "string",
      "TokenType": "string"
   },
   "ChallengeName": "string",
   "ChallengeParameters": { 
      "string" : "string" 
   },
   "Session": "string"
}

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The following data is returned in JSON format by the service.

AuthenticationResult

The result returned by the server in response to the authentication request.

Type: AuthenticationResultType object

ChallengeName

The name of the challenge. For more information, see AdminInitiateAuth.

Type: String

ChallengeParameters

The challenge parameters. For more information, see AdminInitiateAuth.

Type: String to string map

Session

The session which should be passed both ways in challenge-response calls to the service. If the caller needs to go through another challenge, they return a session with other challenge parameters. This session should be passed as it is to the next RespondToAuthChallenge API call.

Type: String

Length Constraints: Minimum length of 20. Maximum length of 2048.

Errors

For information about the errors that are common to all actions, see Common Errors.

AliasExistsException

This exception is thrown when a user tries to confirm the account with an email or phone number that has already been supplied as an alias from a different account. This exception tells user that an account with this email or phone already exists.

HTTP Status Code: 400

CodeMismatchException

This exception is thrown if the provided code does not match what the server was expecting.

HTTP Status Code: 400

ExpiredCodeException

This exception is thrown if a code has expired.

HTTP Status Code: 400

InternalErrorException

This exception is thrown when Amazon Cognito encounters an internal error.

HTTP Status Code: 500

InvalidLambdaResponseException

This exception is thrown when the Amazon Cognito service encounters an invalid AWS Lambda response.

HTTP Status Code: 400

InvalidParameterException

This exception is thrown when the Amazon Cognito service encounters an invalid parameter.

HTTP Status Code: 400

InvalidPasswordException

This exception is thrown when the Amazon Cognito service encounters an invalid password.

HTTP Status Code: 400

InvalidSmsRoleAccessPolicyException

This exception is returned when the role provided for SMS configuration does not have permission to publish using Amazon SNS.

HTTP Status Code: 400

InvalidSmsRoleTrustRelationshipException

This exception is thrown when the trust relationship is invalid for the role provided for SMS configuration. This can happen if you do not trust cognito-idp.amazonaws.com or the external ID provided in the role does not match what is provided in the SMS configuration for the user pool.

HTTP Status Code: 400

InvalidUserPoolConfigurationException

This exception is thrown when the user pool configuration is invalid.

HTTP Status Code: 400

MFAMethodNotFoundException

This exception is thrown when Amazon Cognito cannot find a multi-factor authentication (MFA) method.

HTTP Status Code: 400

NotAuthorizedException

This exception is thrown when a user is not authorized.

HTTP Status Code: 400

PasswordResetRequiredException

This exception is thrown when a password reset is required.

HTTP Status Code: 400

ResourceNotFoundException

This exception is thrown when the Amazon Cognito service cannot find the requested resource.

HTTP Status Code: 400

SoftwareTokenMFANotFoundException

This exception is thrown when the software token TOTP multi-factor authentication (MFA) is not enabled for the user pool.

HTTP Status Code: 400

TooManyRequestsException

This exception is thrown when the user has made too many requests for a given operation.

HTTP Status Code: 400

UnexpectedLambdaException

This exception is thrown when the Amazon Cognito service encounters an unexpected exception with the AWS Lambda service.

HTTP Status Code: 400

UserLambdaValidationException

This exception is thrown when the Amazon Cognito service encounters a user validation exception with the AWS Lambda service.

HTTP Status Code: 400

UserNotConfirmedException

This exception is thrown when a user is not confirmed successfully.

HTTP Status Code: 400

UserNotFoundException

This exception is thrown when a user is not found.

HTTP Status Code: 400