[ aws . cognito-idp ]
Initiates sign-in for a user in the Amazon Cognito user directory. You can’t sign in a user with a federated IdP with InitiateAuth
. For more information, see Adding user pool sign-in through a third party .
Note
This action might generate an SMS text message. Starting June 1, 2021, US telecom carriers require you to register an origination phone number before you can send SMS messages to US phone numbers. If you use SMS text messages in Amazon Cognito, you must register a phone number with Amazon Pinpoint . Amazon Cognito uses the registered number automatically. Otherwise, Amazon Cognito users who must receive SMS messages might not be able to sign up, activate their accounts, or sign in.
If you have never used SMS text messages with Amazon Cognito or any other Amazon Web Service, Amazon Simple Notification Service might place your account in the SMS sandbox. In * sandbox mode * , you can send messages only to verified phone numbers. After you test your app while in the sandbox environment, you can move out of the sandbox and into production. For more information, see SMS message settings for Amazon Cognito user pools in the Amazon Cognito Developer Guide .
See also: AWS API Documentation
initiate-auth
--auth-flow <value>
[--auth-parameters <value>]
[--client-metadata <value>]
--client-id <value>
[--analytics-metadata <value>]
[--user-context-data <value>]
[--cli-input-json | --cli-input-yaml]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]
[--cli-binary-format <value>]
[--no-cli-pager]
[--cli-auto-prompt]
[--no-cli-auto-prompt]
--auth-flow
(string)
The authentication flow for this call to run. The API action will depend on this value. For example:
REFRESH_TOKEN_AUTH
takes in a valid refresh token and returns new tokens.
USER_SRP_AUTH
takes inUSERNAME
andSRP_A
and returns the SRP variables to be used for next challenge execution.
USER_PASSWORD_AUTH
takes inUSERNAME
andPASSWORD
and returns the next challenge or tokens.Valid values include:
USER_SRP_AUTH
: Authentication flow for the Secure Remote Password (SRP) protocol.
REFRESH_TOKEN_AUTH
/REFRESH_TOKEN
: Authentication flow for refreshing the access token and ID token by supplying a valid refresh token.
CUSTOM_AUTH
: Custom authentication flow.
USER_PASSWORD_AUTH
: Non-SRP authentication flow; user name and password are passed directly. If a user migration Lambda trigger is set, this flow will invoke the user migration Lambda if it doesn’t find the user name in the user pool.
ADMIN_NO_SRP_AUTH
isn’t a valid value.Possible values:
USER_SRP_AUTH
REFRESH_TOKEN_AUTH
REFRESH_TOKEN
CUSTOM_AUTH
ADMIN_NO_SRP_AUTH
USER_PASSWORD_AUTH
ADMIN_USER_PASSWORD_AUTH
--auth-parameters
(map)
The authentication parameters. These are inputs corresponding to the
AuthFlow
that you’re invoking. The required values depend on the value ofAuthFlow
:
For
USER_SRP_AUTH
:USERNAME
(required),SRP_A
(required),SECRET_HASH
(required if the app client is configured with a client secret),DEVICE_KEY
.For
REFRESH_TOKEN_AUTH/REFRESH_TOKEN
:REFRESH_TOKEN
(required),SECRET_HASH
(required if the app client is configured with a client secret),DEVICE_KEY
.For
CUSTOM_AUTH
:USERNAME
(required),SECRET_HASH
(if app client is configured with client secret),DEVICE_KEY
. To start the authentication flow with password verification, includeChallengeName: SRP_A
andSRP_A: (The SRP_A Value)
.key -> (string)
value -> (string)
Shorthand Syntax:
KeyName1=string,KeyName2=string
JSON Syntax:
{"string": "string"
...}
--client-metadata
(map)
A map of custom key-value pairs that you can provide as input for certain custom workflows that this action triggers.
You create custom workflows by assigning Lambda functions to user pool triggers. When you use the InitiateAuth API action, Amazon Cognito invokes the Lambda functions that are specified for various triggers. The ClientMetadata value is passed as input to the functions for only the following triggers:
Pre signup
Pre authentication
User migration
When Amazon Cognito invokes the functions for these triggers, it passes a JSON payload, which the function receives as input. This payload contains a
validationData
attribute, which provides the data that you assigned to the ClientMetadata parameter in your InitiateAuth request. In your function code in Lambda, you can process thevalidationData
value to enhance your workflow for your specific needs.When you use the InitiateAuth API action, Amazon Cognito also invokes the functions for the following triggers, but it doesn’t provide the ClientMetadata value as input:
Post authentication
Custom message
Pre token generation
Create auth challenge
Define auth challenge
Verify auth challenge
For more information, see Customizing user pool Workflows with Lambda Triggers in the Amazon Cognito Developer Guide .
Note
When you use the ClientMetadata parameter, remember that Amazon Cognito won’t do the following:
Store the ClientMetadata value. This data is available only to Lambda triggers that are assigned to a user pool to support custom workflows. If your user pool configuration doesn’t include triggers, the ClientMetadata parameter serves no purpose.
Validate the ClientMetadata value.
Encrypt the ClientMetadata value. Don’t use Amazon Cognito to provide sensitive information.
key -> (string)
value -> (string)
Shorthand Syntax:
KeyName1=string,KeyName2=string
JSON Syntax:
{"string": "string"
...}
--client-id
(string)
The app client ID.
--analytics-metadata
(structure)
The Amazon Pinpoint analytics metadata that contributes to your metrics for
InitiateAuth
calls.AnalyticsEndpointId -> (string)
The endpoint ID.
Shorthand Syntax:
AnalyticsEndpointId=string
JSON Syntax:
{
"AnalyticsEndpointId": "string"
}
--user-context-data
(structure)
Contextual data about your user session, such as the device fingerprint, IP address, or location. Amazon Cognito advanced security evaluates the risk of an authentication event based on the context that your app generates and passes to Amazon Cognito when it makes API requests.
IpAddress -> (string)
The source IP address of your user’s device.
EncodedData -> (string)
Encoded device-fingerprint details that your app collected with the Amazon Cognito context data collection library. For more information, see Adding user device and session data to API requests .
Shorthand Syntax:
IpAddress=string,EncodedData=string
JSON Syntax:
{
"IpAddress": "string",
"EncodedData": "string"
}
--cli-input-json
| --cli-input-yaml
(string)
Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton
. If other arguments are provided on the command line, those values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally. This may not be specified along with --cli-input-yaml
.
--generate-cli-skeleton
(string)
Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input
, prints a sample input JSON that can be used as an argument for --cli-input-json
. Similarly, if provided yaml-input
it will print a sample input YAML that can be used with --cli-input-yaml
. If provided with the value output
, it validates the command inputs and returns a sample output JSON for that command. The generated JSON skeleton is not stable between versions of the AWS CLI and there are no backwards compatibility guarantees in the JSON skeleton generated.
--debug
(boolean)
Turn on debug logging.
--endpoint-url
(string)
Override command’s default URL with the given URL.
--no-verify-ssl
(boolean)
By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.
--no-paginate
(boolean)
Disable automatic pagination.
--output
(string)
The formatting style for command output.
json
text
table
yaml
yaml-stream
--query
(string)
A JMESPath query to use in filtering the response data.
--profile
(string)
Use a specific profile from your credential file.
--region
(string)
The region to use. Overrides config/env settings.
--version
(string)
Display the version of this tool.
--color
(string)
Turn on/off color output.
on
off
auto
--no-sign-request
(boolean)
Do not sign requests. Credentials will not be loaded if this argument is provided.
--ca-bundle
(string)
The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.
--cli-read-timeout
(int)
The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.
--cli-connect-timeout
(int)
The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.
--cli-binary-format
(string)
The formatting style to be used for binary blobs. The default format is base64. The base64 format expects binary blobs to be provided as a base64 encoded string. The raw-in-base64-out format preserves compatibility with AWS CLI V1 behavior and binary values must be passed literally. When providing contents from a file that map to a binary blob fileb://
will always be treated as binary and use the file contents directly regardless of the cli-binary-format
setting. When using file://
the file contents will need to properly formatted for the configured cli-binary-format
.
base64
raw-in-base64-out
--no-cli-pager
(boolean)
Disable cli pager for output.
--cli-auto-prompt
(boolean)
Automatically prompt for CLI input parameters.
--no-cli-auto-prompt
(boolean)
Disable automatically prompt for CLI input parameters.
ChallengeName -> (string)
The name of the challenge that you’re responding to with this call. This name is returned in the
AdminInitiateAuth
response if you must pass another challenge.Valid values include the following:
Note
All of the following challenges require
USERNAME
andSECRET_HASH
(if applicable) in the parameters.
SMS_MFA
: Next challenge is to supply anSMS_MFA_CODE
, delivered via SMS.
PASSWORD_VERIFIER
: Next challenge is to supplyPASSWORD_CLAIM_SIGNATURE
,PASSWORD_CLAIM_SECRET_BLOCK
, andTIMESTAMP
after the client-side SRP calculations.
CUSTOM_CHALLENGE
: This is returned if your custom authentication flow determines that the user should pass another challenge before tokens are issued.
DEVICE_SRP_AUTH
: If device tracking was activated on your user pool and the previous challenges were passed, this challenge is returned so that Amazon Cognito can start tracking this device.
DEVICE_PASSWORD_VERIFIER
: Similar toPASSWORD_VERIFIER
, but for devices only.
NEW_PASSWORD_REQUIRED
: For users who are required to change their passwords after successful first login. Respond to this challenge withNEW_PASSWORD
and any required attributes that Amazon Cognito returned in therequiredAttributes
parameter. You can also set values for attributes that aren’t required by your user pool and that your app client can write. For more information, see RespondToAuthChallenge .Note
In a
NEW_PASSWORD_REQUIRED
challenge response, you can’t modify a required attribute that already has a value. InRespondToAuthChallenge
, set a value for any keys that Amazon Cognito returned in therequiredAttributes
parameter, then use theUpdateUserAttributes
API operation to modify the value of any additional attributes.
MFA_SETUP
: For users who are required to setup an MFA factor before they can sign in. The MFA types activated for the user pool will be listed in the challenge parametersMFA_CAN_SETUP
value. To set up software token MFA, use the session returned here fromInitiateAuth
as an input toAssociateSoftwareToken
. Use the session returned byVerifySoftwareToken
as an input toRespondToAuthChallenge
with challenge nameMFA_SETUP
to complete sign-in. To set up SMS MFA, an administrator should help the user to add a phone number to their account, and then the user should callInitiateAuth
again to restart sign-in.
Session -> (string)
The session that should pass both ways in challenge-response calls to the service. If the caller must pass another challenge, they return a session with other challenge parameters. This session should be passed as it is to the next
RespondToAuthChallenge
API call.
ChallengeParameters -> (map)
The challenge parameters. These are returned in the
InitiateAuth
response if you must pass another challenge. The responses in this parameter should be used to compute inputs to the next call (RespondToAuthChallenge
).All challenges require
USERNAME
andSECRET_HASH
(if applicable).key -> (string)
value -> (string)
AuthenticationResult -> (structure)
The result of the authentication response. This result is only returned if the caller doesn’t need to pass another challenge. If the caller does need to pass another challenge before it gets tokens,
ChallengeName
,ChallengeParameters
, andSession
are returned.AccessToken -> (string)
A valid access token that Amazon Cognito issued to the user who you want to authenticate.
ExpiresIn -> (integer)
The expiration period of the authentication result in seconds.
TokenType -> (string)
The token type.
RefreshToken -> (string)
The refresh token.
IdToken -> (string)
The ID token.
NewDeviceMetadata -> (structure)
The new device metadata from an authentication result.
DeviceKey -> (string)
The device key.
DeviceGroupKey -> (string)
The device group key.