AWS Tools for Windows PowerShell
Command Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Synopsis

Calls the AWS Security Token Service AssumeRoleWithSAML API operation.

Syntax

Use-STSRoleWithSAML
-RoleArn <String>
-PrincipalArn <String>
-SAMLAssertion <String>
-Policy <String>
-DurationInSeconds <Int32>
-Force <SwitchParameter>
-Select <String>

Description

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 AWS access without user-specific credentials or configuration. For a comparison of AssumeRoleWithSAML with the other APIs that produce temporary credentials, see Requesting Temporary Security Credentials and Comparing the AWS STS APIs 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 AWS services. The temporary security credentials are valid for the duration that you specified when calling AssumeRole, or until the time specified in the SAML authentication response's SessionNotOnOrAfter value, whichever is shorter. The duration can be from 900 seconds (15 minutes) to a maximum of 3600 seconds (1 hour). The default is 1 hour. The temporary security credentials created by AssumeRoleWithSAML can be used to make API calls to any AWS service with the following exception: you cannot call the STS service's GetFederationToken or GetSessionToken APIs. Optionally, you can pass an IAM access policy to this operation. If you choose not to pass a policy, the temporary security credentials that are returned by the operation have the permissions that are defined in the access policy of the role that is being assumed. If you pass a policy to this operation, the temporary security credentials that are returned by the operation have the permissions that are allowed by the intersection of both the access policy of the role that is being assumed, and the policy that you pass. This means that both policies must grant the permission for the action to be allowed. This gives you a way to further restrict the permissions for the resulting temporary security credentials. You cannot use the passed policy to grant permissions that are in excess of those allowed by the access policy of the role that is being assumed. For more information, see Permissions for AssumeRole, AssumeRoleWithSAML, and AssumeRoleWithWebIdentity in the IAM User Guide. Before your application can call AssumeRoleWithSAML, you must configure your SAML identity provider (IdP) to issue the claims required by AWS. Additionally, you must use AWS Identity and Access Management (IAM) to create a SAML provider entity in your AWS account that represents your identity provider, and create an IAM role that specifies this SAML provider in its trust policy. Calling AssumeRoleWithSAML does not require the use of AWS 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 AssumeRoleWithSAML can result in an entry in your AWS CloudTrail logs. The entry includes the value in the NameID element of the SAML assertion. We recommend that you use a NameIDType that 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). For more information, see the following resources:

Parameters

-DurationInSeconds <Int32>
The duration, in seconds, of the role session. The value can range from 900 seconds (15 minutes) to 3600 seconds (1 hour). By default, the value is set to 3600 seconds. An expiration can also be specified in the SAML authentication response's SessionNotOnOrAfter value. The actual expiration time is whichever value is shorter. This is separate from the duration of a console session that you might request using the returned credentials. The request to the federation endpoint for a console sign-in token takes a SessionDuration parameter that specifies the maximum length of the console session, separately from the DurationSeconds parameter on this API. For more information, see Enabling SAML 2.0 Federated Users to Access the AWS Management Console in the IAM User Guide.
Required?False
Position?5
Accept pipeline input?True (ByPropertyName)
AliasesDurationSeconds
-Force <SwitchParameter>
This parameter overrides confirmation prompts to force the cmdlet to continue its operation. This parameter should always be used with caution.
Required?False
Position?Named
Accept pipeline input?False
-Policy <String>
An IAM policy in JSON format.The policy parameter is optional. If you pass a policy, the temporary security credentials that are returned by the operation have the permissions that are allowed by both the access policy of the role that is being assumed, and the policy that you pass. This gives you a way to further restrict the permissions for the resulting temporary security credentials. You cannot use the passed policy to grant permissions that are in excess of those allowed by the access policy of the role that is being assumed. For more information, Permissions for AssumeRole, AssumeRoleWithSAML, and AssumeRoleWithWebIdentity in the IAM User Guide. The format for this parameter, as described by its regex pattern, is a string of characters up to 2048 characters in length. The characters can be any ASCII character from the space character to the end of the valid character list (\u0020-\u00FF). It can also include the tab (\u0009), linefeed (\u000A), and carriage return (\u000D) characters.The policy plain text must be 2048 bytes or shorter. However, an internal conversion compresses it into a packed binary format with a separate limit. The PackedPolicySize response element indicates by percentage how close to the upper size limit the policy is, with 100% equaling the maximum allowed size.
Required?False
Position?4
Accept pipeline input?True (ByPropertyName)
-PrincipalArn <String>
The Amazon Resource Name (ARN) of the SAML provider in IAM that describes the IdP.
Required?False
Position?2
Accept pipeline input?True (ByPropertyName)
-RoleArn <String>
The Amazon Resource Name (ARN) of the role that the caller is assuming.
Required?False
Position?1
Accept pipeline input?True (ByValue, ByPropertyName)
-SAMLAssertion <String>
The base-64 encoded SAML authentication response provided by the IdP.For more information, see Configuring a Relying Party and Adding Claims in the Using IAM guide.
Required?False
Position?3
Accept pipeline input?True (ByPropertyName)
-Select <String>
Use the -Select parameter to control the cmdlet output. The default value is '*'. Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.SecurityToken.Model.AssumeRoleWithSAMLResponse). Specifying the name of a property of type Amazon.SecurityToken.Model.AssumeRoleWithSAMLResponse will result in that property being returned. Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
Required?False
Position?Named
Accept pipeline input?False

Common Credential and Region Parameters

-Region <String>
The region to use. STS has a single endpoint irrespective of region, though STS in GovCloud and China (Beijing) has its own endpoint.
Required?False
Position?Named
Accept pipeline input?True (ByPropertyName)

Outputs

Amazon.SecurityToken.Model.AssumeRoleWithSAMLResponse
This cmdlet returns an Amazon.SecurityToken.Model.AssumeRoleWithSAMLResponse object containing multiple properties. The object can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack.
Service API Reference
AWS Tools for PowerShell User Guide

Supported Version

AWS Tools for PowerShell: 2.x.y.z