Class: AWS.STS
- Inherits:
-
AWS.Service
- Object
- AWS.Service
- AWS.STS
- Identifier:
- sts
- API Version:
- 2011-06-15
- Defined in:
- (unknown)
Overview
Constructs a service interface object. Each API operation is exposed as a function on service.
Service Description
Security Token Service (STS) enables you to request temporary, limited-privilege credentials for Identity and Access Management (IAM) users or for users that you authenticate (federated users). This guide provides descriptions of the STS API. For more information about using this service, see Temporary Security Credentials.
Sending a Request Using STS
var sts = new AWS.STS();
sts.assumeRole(params, function (err, data) {
if (err) console.log(err, err.stack); // an error occurred
else console.log(data); // successful response
});
Locking the API Version
In order to ensure that the STS object uses this specific API, you can
construct the object by passing the apiVersion option to the constructor:
var sts = new AWS.STS({apiVersion: '2011-06-15'});
You can also set the API version globally in AWS.config.apiVersions using
the sts service identifier:
AWS.config.apiVersions = {
sts: '2011-06-15',
// other service API versions
};
var sts = new AWS.STS();
Constructor Summary collapse
-
new AWS.STS(options = {}) ⇒ Object
constructor
Constructs a service object.
Property Summary collapse
-
endpoint ⇒ AWS.Endpoint
readwrite
An Endpoint object representing the endpoint URL for service requests.
Properties inherited from AWS.Service
Method Summary collapse
-
assumeRole(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary security credentials that you can use to access Amazon Web Services resources that you might not normally have access to.
-
assumeRoleWithSAML(params, callback) ⇒ AWS.Request
Returns a set of temporary security credentials for users who have been authenticated via a SAML authentication response.
-
assumeRoleWithWebIdentity(params, callback) ⇒ AWS.Request
Returns a set of temporary security credentials for users who have been authenticated in a mobile or web application with a web identity provider.
-
credentialsFrom(data, credentials = null) ⇒ AWS.TemporaryCredentials
Creates a credentials object from STS response data containing credentials information.
-
decodeAuthorizationMessage(params = {}, callback) ⇒ AWS.Request
Decodes additional information about the authorization status of a request from an encoded message returned in response to an Amazon Web Services request.
For example, if a user is not authorized to perform an operation that he or she has requested, the request returns a
Client.UnauthorizedOperationresponse (an HTTP 403 response). -
getAccessKeyInfo(params = {}, callback) ⇒ AWS.Request
Returns the account identifier for the specified access key ID.
Access keys consist of two parts: an access key ID (for example,
AKIAIOSFODNN7EXAMPLE) and a secret access key (for example,wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY). -
getCallerIdentity(params = {}, callback) ⇒ AWS.Request
Returns details about the IAM user or role whose credentials are used to call the operation.
Note: No permissions are required to perform this operation.- getFederationToken(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary security credentials (consisting of an access key ID, a secret access key, and a security token) for a federated user.
- getSessionToken(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary credentials for an Amazon Web Services account or IAM user.
Methods inherited from AWS.Service
makeRequest, makeUnauthenticatedRequest, waitFor, defineService
Constructor Details
new AWS.STS(options = {}) ⇒ Object
Constructs a service object. This object has one method for each API operation.
Property Details
Method Details
assumeRole(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary security credentials that you can use to access Amazon Web Services resources that you might not normally have access to. These temporary credentials consist of an access key ID, a secret access key, and a security token. Typically, you use
AssumeRolewithin your account or for cross-account access. For a comparison ofAssumeRolewith other API operations that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the STS API operations in the IAM User Guide.Permissions
The temporary security credentials created by
AssumeRolecan be used to make API calls to any Amazon Web Services service with the following exception: You cannot call the STSGetFederationTokenorGetSessionTokenAPI operations.(Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide.
To assume a role from a different account, your account must be trusted by the role. The trust relationship is defined in the role's trust policy when the role is created. That trust policy states which accounts are allowed to delegate that access to users in the account.
A user who wants to access a role in a different account must also have permissions that are delegated from the user account administrator. The administrator must attach a policy that allows the user to call
AssumeRolefor the ARN of the role in the other account. If the user is in the same account as the role, then you can do either of the following:-
Attach a policy to the user (identical to the previous user in a different account).
-
Add the user as a principal directly in the role's trust policy.
In this case, the trust policy acts as an IAM resource-based policy. Users in the same account as the role do not need explicit permission to assume the role. For more information about trust policies and resource-based policies, see IAM Policies in the IAM User Guide.
Tags
(Optional) You can pass tag key-value pairs to your session. These tags are called session tags. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide.
An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide.
You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide.
Using MFA with AssumeRole
(Optional) You can include multi-factor authentication (MFA) information when you call
AssumeRole. This is useful for cross-account scenarios to ensure that the user that assumes the role has been authenticated with an Amazon Web Services MFA device. In that scenario, the trust policy of the role being assumed includes a condition that tests for MFA authentication. If the caller does not include valid MFA information, the request to assume the role is denied. The condition in a trust policy that tests for MFA authentication might look like the following example."Condition": {"Bool": {"aws:MultiFactorAuthPresent": true}}For more information, see Configuring MFA-Protected API Access in the IAM User Guide guide.
To use MFA with
AssumeRole, you pass values for theSerialNumberandTokenCodeparameters. TheSerialNumbervalue identifies the user's hardware or virtual MFA device. TheTokenCodeis the time-based one-time password (TOTP) that the MFA device produces.assumeRoleWithSAML(params, callback) ⇒ AWS.Request
Returns a set of temporary security credentials for users who have been authenticated via a SAML authentication response. This operation provides a mechanism for tying an enterprise identity store or directory to role-based Amazon Web Services access without user-specific credentials or configuration. For a comparison of
AssumeRoleWithSAMLwith the other API operations that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the STS API operations in the IAM User Guide.The temporary security credentials returned by this operation consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services services.
Session Duration
By default, the temporary security credentials created by
AssumeRoleWithSAMLlast for one hour. However, you can use the optionalDurationSecondsparameter to specify the duration of your session. Your role session lasts for the duration that you specify, or until the time specified in the SAML authentication response'sSessionNotOnOrAftervalue, whichever is shorter. You can provide aDurationSecondsvalue from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. To learn how to view the maximum value for your role, see View the Maximum Session Duration Setting for a Role in the IAM User Guide. The maximum session duration limit applies when you use theAssumeRole*API operations or theassume-role*CLI commands. However the limit does not apply when you use those operations to create a console URL. For more information, see Using IAM Roles in the IAM User Guide.Note: Role chaining limits your CLI or Amazon Web Services API role session to a maximum of one hour. When you use theAssumeRoleAPI operation to assume a role, you can specify the duration of your role session with theDurationSecondsparameter. You can specify a parameter value of up to 43200 seconds (12 hours), depending on the maximum session duration setting for your role. However, if you assume a role using role chaining and provide aDurationSecondsparameter value greater than one hour, the operation fails.Permissions
The temporary security credentials created by
AssumeRoleWithSAMLcan be used to make API calls to any Amazon Web Services service with the following exception: you cannot call the STSGetFederationTokenorGetSessionTokenAPI operations.(Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide.
Calling
AssumeRoleWithSAMLdoes not require the use of Amazon Web Services security credentials. The identity of the caller is validated by using keys in the metadata document that is uploaded for the SAML provider entity for your identity provider.Calling
AssumeRoleWithSAMLcan result in an entry in your CloudTrail logs. The entry includes the value in theNameIDelement of the SAML assertion. We recommend that you use aNameIDTypethat is not associated with any personally identifiable information (PII). For example, you could instead use the persistent identifier (urn:oasis:names:tc:SAML:2.0:nameid-format:persistent).Tags
(Optional) You can configure your IdP to pass attributes into your SAML assertion as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide.
You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see IAM and STS Character Limits in the IAM User Guide.
Note: An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. ThePackedPolicySizeresponse element indicates by percentage how close the policies and tags for your request are to the upper size limit.You can pass a session tag with the same key as a tag that is attached to the role. When you do, session tags override the role's tags with the same key.
An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide.
You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide.
SAML Configuration
Before your application can call
AssumeRoleWithSAML, you must configure your SAML identity provider (IdP) to issue the claims required by Amazon Web Services. Additionally, you must use Identity and Access Management (IAM) to create a SAML provider entity in your Amazon Web Services account that represents your identity provider. You must also create an IAM role that specifies this SAML provider in its trust policy.For more information, see the following resources:
-
About SAML 2.0-based Federation in the IAM User Guide.
-
Creating SAML Identity Providers in the IAM User Guide.
-
Configuring a Relying Party and Claims in the IAM User Guide.
-
Creating a Role for SAML 2.0 Federation in the IAM User Guide.
assumeRoleWithWebIdentity(params, callback) ⇒ AWS.Request
Returns a set of temporary security credentials for users who have been authenticated in a mobile or web application with a web identity provider. Example providers include Amazon Cognito, Login with Amazon, Facebook, Google, or any OpenID Connect-compatible identity provider.
Note: For mobile applications, we recommend that you use Amazon Cognito. You can use Amazon Cognito with the Amazon Web Services SDK for iOS Developer Guide and the Amazon Web Services SDK for Android Developer Guide to uniquely identify a user. You can also supply the user with a consistent identity throughout the lifetime of an application. To learn more about Amazon Cognito, see Amazon Cognito Overview in Amazon Web Services SDK for Android Developer Guide and Amazon Cognito Overview in the Amazon Web Services SDK for iOS Developer Guide.Calling
AssumeRoleWithWebIdentitydoes not require the use of Amazon Web Services security credentials. Therefore, you can distribute an application (for example, on mobile devices) that requests temporary security credentials without including long-term Amazon Web Services credentials in the application. You also don't need to deploy server-based proxy services that use long-term Amazon Web Services credentials. Instead, the identity of the caller is validated by using a token from the web identity provider. For a comparison ofAssumeRoleWithWebIdentitywith the other API operations that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the STS API operations in the IAM User Guide.The temporary security credentials returned by this API consist of an access key ID, a secret access key, and a security token. Applications can use these temporary security credentials to sign calls to Amazon Web Services service API operations.
Session Duration
By default, the temporary security credentials created by
AssumeRoleWithWebIdentitylast for one hour. However, you can use the optionalDurationSecondsparameter to specify the duration of your session. You can provide a value from 900 seconds (15 minutes) up to the maximum session duration setting for the role. This setting can have a value from 1 hour to 12 hours. To learn how to view the maximum value for your role, see View the Maximum Session Duration Setting for a Role in the IAM User Guide. The maximum session duration limit applies when you use theAssumeRole*API operations or theassume-role*CLI commands. However the limit does not apply when you use those operations to create a console URL. For more information, see Using IAM Roles in the IAM User Guide.Permissions
The temporary security credentials created by
AssumeRoleWithWebIdentitycan be used to make API calls to any Amazon Web Services service with the following exception: you cannot call the STSGetFederationTokenorGetSessionTokenAPI operations.(Optional) You can pass inline or managed session policies to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters. Passing policies to this operation returns new temporary credentials. The resulting session's permissions are the intersection of the role's identity-based policy and the session policies. You can use the role's temporary credentials in subsequent Amazon Web Services API calls to access resources in the account that owns the role. You cannot use session policies to grant more permissions than those allowed by the identity-based policy of the role that is being assumed. For more information, see Session Policies in the IAM User Guide.
Tags
(Optional) You can configure your IdP to pass attributes into your web identity token as session tags. Each session tag consists of a key name and an associated value. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide.
You can pass up to 50 session tags. The plaintext session tag keys can’t exceed 128 characters and the values can’t exceed 256 characters. For these and additional limits, see IAM and STS Character Limits in the IAM User Guide.
Note: An Amazon Web Services conversion compresses the passed session policies and session tags into a packed binary format that has a separate limit. Your request can fail for this limit even if your plaintext meets the other requirements. ThePackedPolicySizeresponse element indicates by percentage how close the policies and tags for your request are to the upper size limit.You can pass a session tag with the same key as a tag that is attached to the role. When you do, the session tag overrides the role tag with the same key.
An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide.
You can set the session tags as transitive. Transitive tags persist during role chaining. For more information, see Chaining Roles with Session Tags in the IAM User Guide.
Identities
Before your application can call
AssumeRoleWithWebIdentity, you must have an identity token from a supported identity provider and create a role that the application can assume. The role that your application assumes must trust the identity provider that is associated with the identity token. In other words, the identity provider must be specified in the role's trust policy.Calling
AssumeRoleWithWebIdentitycan result in an entry in your CloudTrail logs. The entry includes the Subject of the provided web identity token. We recommend that you avoid using any personally identifiable information (PII) in this field. For example, you could instead use a GUID or a pairwise identifier, as suggested in the OIDC specification.For more information about how to use web identity federation and the
AssumeRoleWithWebIdentityAPI, see the following resources:-
Using Web Identity Federation API Operations for Mobile Apps and Federation Through a Web-based Identity Provider.
-
Web Identity Federation Playground. Walk through the process of authenticating through Login with Amazon, Facebook, or Google, getting temporary security credentials, and then using those credentials to make a request to Amazon Web Services.
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Amazon Web Services SDK for iOS Developer Guide and Amazon Web Services SDK for Android Developer Guide. These toolkits contain sample apps that show how to invoke the identity providers. The toolkits then show how to use the information from these providers to get and use temporary security credentials.
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Web Identity Federation with Mobile Applications. This article discusses web identity federation and shows an example of how to use web identity federation to get access to content in Amazon S3.
credentialsFrom(data, credentials = null) ⇒ AWS.TemporaryCredentials
decodeAuthorizationMessage(params = {}, callback) ⇒ AWS.Request
Decodes additional information about the authorization status of a request from an encoded message returned in response to an Amazon Web Services request.
For example, if a user is not authorized to perform an operation that he or she has requested, the request returns a
Client.UnauthorizedOperationresponse (an HTTP 403 response). Some Amazon Web Services operations additionally return an encoded message that can provide details about this authorization failure.Note: Only certain Amazon Web Services operations return an encoded authorization message. The documentation for an individual operation indicates whether that operation returns an encoded message in addition to returning an HTTP code.The message is encoded because the details of the authorization status can constitute privileged information that the user who requested the operation should not see. To decode an authorization status message, a user must be granted permissions via an IAM policy to request the
DecodeAuthorizationMessage(sts:DecodeAuthorizationMessage) action.The decoded message includes the following type of information:
-
Whether the request was denied due to an explicit deny or due to the absence of an explicit allow. For more information, see Determining Whether a Request is Allowed or Denied in the IAM User Guide.
-
The principal who made the request.
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The requested action.
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The requested resource.
-
The values of condition keys in the context of the user's request.
getAccessKeyInfo(params = {}, callback) ⇒ AWS.Request
Returns the account identifier for the specified access key ID.
Access keys consist of two parts: an access key ID (for example,
AKIAIOSFODNN7EXAMPLE) and a secret access key (for example,wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY). For more information about access keys, see Managing Access Keys for IAM Users in the IAM User Guide.When you pass an access key ID to this operation, it returns the ID of the Amazon Web Services account to which the keys belong. Access key IDs beginning with
AKIAare long-term credentials for an IAM user or the Amazon Web Services account root user. Access key IDs beginning withASIAare temporary credentials that are created using STS operations. If the account in the response belongs to you, you can sign in as the root user and review your root user access keys. Then, you can pull a credentials report to learn which IAM user owns the keys. To learn who requested the temporary credentials for anASIAaccess key, view the STS events in your CloudTrail logs in the IAM User Guide.This operation does not indicate the state of the access key. The key might be active, inactive, or deleted. Active keys might not have permissions to perform an operation. Providing a deleted access key might return an error that the key doesn't exist.
getCallerIdentity(params = {}, callback) ⇒ AWS.Request
Returns details about the IAM user or role whose credentials are used to call the operation.
Note: No permissions are required to perform this operation. If an administrator adds a policy to your IAM user or role that explicitly denies access to thests:GetCallerIdentityaction, you can still perform this operation. Permissions are not required because the same information is returned when an IAM user or role is denied access. To view an example response, see I Am Not Authorized to Perform: iam:DeleteVirtualMFADevice in the IAM User Guide.getFederationToken(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary security credentials (consisting of an access key ID, a secret access key, and a security token) for a federated user. A typical use is in a proxy application that gets temporary security credentials on behalf of distributed applications inside a corporate network. You must call the
GetFederationTokenoperation using the long-term security credentials of an IAM user. As a result, this call is appropriate in contexts where those credentials can be safely stored, usually in a server-based application. For a comparison ofGetFederationTokenwith the other API operations that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the STS API operations in the IAM User Guide.Note: You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use Amazon Cognito orAssumeRoleWithWebIdentity. For more information, see Federation Through a Web-based Identity Provider in the IAM User Guide.You can also call
GetFederationTokenusing the security credentials of an Amazon Web Services account root user, but we do not recommend it. Instead, we recommend that you create an IAM user for the purpose of the proxy application. Then attach a policy to the IAM user that limits federated users to only the actions and resources that they need to access. For more information, see IAM Best Practices in the IAM User Guide.Session duration
The temporary credentials are valid for the specified duration, from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours). The default session duration is 43,200 seconds (12 hours). Temporary credentials that are obtained by using Amazon Web Services account root user credentials have a maximum duration of 3,600 seconds (1 hour).
Permissions
You can use the temporary credentials created by
GetFederationTokenin any Amazon Web Services service except the following:-
You cannot call any IAM operations using the CLI or the Amazon Web Services API.
-
You cannot call any STS operations except
GetCallerIdentity.
You must pass an inline or managed session policy to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plaintext that you use for both inline and managed session policies can't exceed 2,048 characters.
Though the session policy parameters are optional, if you do not pass a policy, then the resulting federated user session has no permissions. When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see Session Policies in the IAM User Guide. For information about using
GetFederationTokento create temporary security credentials, see GetFederationToken—Federation Through a Custom Identity Broker.You can use the credentials to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the
Principalelement of the policy, the session has the permissions allowed by the policy. These permissions are granted in addition to the permissions granted by the session policies.Tags
(Optional) You can pass tag key-value pairs to your session. These are called session tags. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide.
Note: You can create a mobile-based or browser-based app that can authenticate users using a web identity provider like Login with Amazon, Facebook, Google, or an OpenID Connect-compatible identity provider. In this case, we recommend that you use Amazon Cognito orAssumeRoleWithWebIdentity. For more information, see Federation Through a Web-based Identity Provider in the IAM User Guide.You can also call
GetFederationTokenusing the security credentials of an Amazon Web Services account root user, but we do not recommend it. Instead, we recommend that you create an IAM user for the purpose of the proxy application. Then attach a policy to the IAM user that limits federated users to only the actions and resources that they need to access. For more information, see IAM Best Practices in the IAM User Guide.Session duration
The temporary credentials are valid for the specified duration, from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours). The default session duration is 43,200 seconds (12 hours). Temporary credentials that are obtained by using Amazon Web Services account root user credentials have a maximum duration of 3,600 seconds (1 hour).
Permissions
You can use the temporary credentials created by
GetFederationTokenin any Amazon Web Services service except the following:-
You cannot call any IAM operations using the CLI or the Amazon Web Services API.
-
You cannot call any STS operations except
GetCallerIdentity.
You must pass an inline or managed session policy to this operation. You can pass a single JSON policy document to use as an inline session policy. You can also specify up to 10 managed policies to use as managed session policies. The plain text that you use for both inline and managed session policies can't exceed 2,048 characters.
Though the session policy parameters are optional, if you do not pass a policy, then the resulting federated user session has no permissions. When you pass session policies, the session permissions are the intersection of the IAM user policies and the session policies that you pass. This gives you a way to further restrict the permissions for a federated user. You cannot use session policies to grant more permissions than those that are defined in the permissions policy of the IAM user. For more information, see Session Policies in the IAM User Guide. For information about using
GetFederationTokento create temporary security credentials, see GetFederationToken—Federation Through a Custom Identity Broker.You can use the credentials to access a resource that has a resource-based policy. If that policy specifically references the federated user session in the
Principalelement of the policy, the session has the permissions allowed by the policy. These permissions are granted in addition to the permissions granted by the session policies.Tags
(Optional) You can pass tag key-value pairs to your session. These are called session tags. For more information about session tags, see Passing Session Tags in STS in the IAM User Guide.
An administrator must grant you the permissions necessary to pass session tags. The administrator can also create granular permissions to allow you to pass only specific session tags. For more information, see Tutorial: Using Tags for Attribute-Based Access Control in the IAM User Guide.
Tag key–value pairs are not case sensitive, but case is preserved. This means that you cannot have separate
Departmentanddepartmenttag keys. Assume that the user that you are federating has theDepartment=Marketingtag and you pass thedepartment=engineeringsession tag.Departmentanddepartmentare not saved as separate tags, and the session tag passed in the request takes precedence over the user tag.getSessionToken(params = {}, callback) ⇒ AWS.Request
Returns a set of temporary credentials for an Amazon Web Services account or IAM user. The credentials consist of an access key ID, a secret access key, and a security token. Typically, you use
GetSessionTokenif you want to use MFA to protect programmatic calls to specific Amazon Web Services API operations like Amazon EC2StopInstances. MFA-enabled IAM users would need to callGetSessionTokenand submit an MFA code that is associated with their MFA device. Using the temporary security credentials that are returned from the call, IAM users can then make programmatic calls to API operations that require MFA authentication. If you do not supply a correct MFA code, then the API returns an access denied error. For a comparison ofGetSessionTokenwith the other API operations that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the STS API operations in the IAM User Guide.Session Duration
The
GetSessionTokenoperation must be called by using the long-term Amazon Web Services security credentials of the Amazon Web Services account root user or an IAM user. Credentials that are created by IAM users are valid for the duration that you specify. This duration can range from 900 seconds (15 minutes) up to a maximum of 129,600 seconds (36 hours), with a default of 43,200 seconds (12 hours). Credentials based on account credentials can range from 900 seconds (15 minutes) up to 3,600 seconds (1 hour), with a default of 1 hour.Permissions
The temporary security credentials created by
GetSessionTokencan be used to make API calls to any Amazon Web Services service with the following exceptions:-
You cannot call any IAM API operations unless MFA authentication information is included in the request.
-
You cannot call any STS API except
AssumeRoleorGetCallerIdentity.
Note: We recommend that you do not callGetSessionTokenwith Amazon Web Services account root user credentials. Instead, follow our best practices by creating one or more IAM users, giving them the necessary permissions, and using IAM users for everyday interaction with Amazon Web Services.The credentials that are returned by
GetSessionTokenare based on permissions associated with the user whose credentials were used to call the operation. IfGetSessionTokenis called using Amazon Web Services account root user credentials, the temporary credentials have root user permissions. Similarly, ifGetSessionTokenis called using the credentials of an IAM user, the temporary credentials have the same permissions as the IAM user.For more information about using
GetSessionTokento create temporary credentials, go to Temporary Credentials for Users in Untrusted Environments in the IAM User Guide. - getFederationToken(params = {}, callback) ⇒ AWS.Request