Authenticating the AWS SDK for C++ with AWS (original) (raw)

You must establish how your code authenticates with AWS when developing with AWS services. There are different ways in which you can configure programmatic access to AWS resources, depending on the environment and the AWS access available to you.

To choose your method of authentication and configure it for the SDK, see Authentication and access in the_AWS SDKs and Tools Reference Guide_.

We recommend that new users who are developing locally and are not given a method of authentication by their employer should set up AWS IAM Identity Center. This method includes installing the AWS CLI for ease of configuration and for regularly signing in to the AWS access portal.

If you choose this method, complete the procedure for IAM Identity Center authentication in the_AWS SDKs and Tools Reference Guide_. Afterwards, your environment should contain the following elements:

• The AWS CLI, which you use to start an AWS access portal session before you run your application.
• A shared AWSconfig file having a [default] profile with a set of configuration values that can be referenced from the SDK. To find the location of this file, see Location of the shared files in the AWS SDKs and Tools Reference Guide.
• The shared config file sets the region setting. This sets the default AWS Region that the SDK uses for AWS requests. This Region is used for SDK service requests that aren't specified with a Region to use.
• The SDK uses the profile's SSO token provider configuration to acquire credentials before sending requests to AWS. The sso_role_name value, which is an IAM role connected to an IAM Identity Center permission set, should allow access to the AWS services used in your application.
  The following sample config file shows a default profile set up with SSO token provider configuration. The profile's sso_session setting refers to the named sso-session section. The sso-session section contains settings to initiate an AWS access portal session.

[default]  
sso_session = my-sso  
sso_account_id = 111122223333  
sso_role_name = SampleRole  
region = us-east-1  
output = json  
[sso-session my-sso]  
sso_region = us-east-1  
sso_start_url = https://provided-domain.awsapps.com/start  
sso_registration_scopes = sso:account:access  

The AWS SDK for C++ does not need additional packages (such as SSO andSSOOIDC) to be added to your application to use IAM Identity Center authentication.

Start an AWS access portal session

Before running an application that accesses AWS services, you need an active AWS access portal session for the SDK to use IAM Identity Center authentication to resolve credentials. Depending on your configured session lengths, your access will eventually expire and the SDK will encounter an authentication error. To sign in to the AWS access portal, run the following command in the AWS CLI.

aws sso login

Since you have a default profile setup, you do not need to call the command with a--profile option. If your SSO token provider configuration is using a named profile, the command is aws sso login --profile named-profile.

To test if you already have an active session, run the following AWS CLI command.

aws sts get-caller-identity

The response to this command should report the IAM Identity Center account and permission set configured in the shared config file.

Note

If you already have an active AWS access portal session and run aws sso login, you will not be required to provide credentials.

The sign-in process might prompt you to allow the AWS CLI access to your data. Because the AWS CLI is built on top of the SDK for Python, permission messages may contain variations of the botocore name.

More authentication information

Human users, also known as human identities, are the people, administrators, developers, operators, and consumers of your applications. They must have an identity to access your AWS environments and applications. Human users that are members of your organization are also known as workforce identities, that means you, the developer. Use temporary credentials when accessing AWS. You can use an identity provider for your human users to provide federated access to AWS accounts by assuming roles, which provide temporary credentials. For centralized access management, we recommend that you use AWS IAM Identity Center (IAM Identity Center) to manage access to your accounts and permissions within those accounts. For more alternatives, see the following:

• To learn more about best practices, see Security best practices in IAM in the IAM User Guide.
• To create short-term AWS credentials, see Temporary Security Credentials in the IAM User Guide.
• To learn about other AWS SDK for C++ credential providers, see Standardized credential providers in the AWS SDKs and Tools Reference Guide.