We recommend using short-term access keys when possible to make programmatic calls to AWS or to use the AWS Command Line Interface or AWS Tools for PowerShell. However, you can also use long-term AWS access keys for these purposes.
When you create a long-term access key, you create the access key ID (for example, AKIAIOSFODNN7EXAMPLE) and secret access key (for example, wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY) as a set. The secret access key is available for download only when you create it. If you don't download your secret access key or if you lose it, you must create a new one.
In many scenarios, you don't need long-term access keys that never expire (as you have when you create access keys for an IAM user). Instead, you can create IAM roles and generate temporary security credentials. Temporary security credentials include an access key ID and a secret access key, but they also include a security token that indicates when the credentials expire. After they expire, they're no longer valid. For more information, see Alternatives to long-term access keys
Access key IDs beginning with AKIA are long-term access keys for an IAM user or an AWS account root user. Access key IDs beginning with ASIA are temporary credentials access keys that you create using AWS STS operations.
Users need programmatic access if they want to interact with AWS outside of the AWS Management Console. The way to grant programmatic access depends on the type of user that's accessing AWS.
To grant users programmatic access, choose one of the following options.
Which user needs programmatic access? To ByWorkforce identity
(Users managed in IAM Identity Center)
Use temporary credentials to sign programmatic requests to the AWS CLI, AWS SDKs, or AWS APIs.Following the instructions for the interface that you want to use.
For the AWS CLI, see Configuring the AWS CLI to use AWS IAM Identity Center in the AWS Command Line Interface User Guide.
For AWS SDKs, tools, and AWS APIs, see IAM Identity Center authentication in the AWS SDKs and Tools Reference Guide.
(Not recommended)
Use long-term credentials to sign programmatic requests to the AWS CLI, AWS SDKs, or AWS APIs.Following the instructions for the interface that you want to use.
For the AWS CLI, see Authenticating using IAM user credentials in the AWS Command Line Interface User Guide.
For AWS SDKs and tools, see Authenticate using long-term credentials in the AWS SDKs and Tools Reference Guide.
For AWS APIs, see Managing access keys for IAM users in the IAM User Guide.
For many common use cases, there are alternatives to long-term access keys. To improve your account security, consider the following.
Don't embed long-term access keys and secret access keys in your application code or in a code repository â Instead, use AWS Secrets Manager, or other secrets management solution, so you don't have to hardcode keys in plaintext. The application or client can then retrieve secrets when needed. For more information, see What is AWS Secrets Manager? in the AWS Secrets Manager User Guide.
Use IAM roles to generate temporary security credentials whenever possible â Always use mechanisms to issue temporary security credentials when possible, rather than long-term access keys. Temporary security credentials are more secure because they are not stored with the user but are generated dynamically and provided to the user when requested. Temporary security credentials have a limited lifetime so you don't have to manage or update them. Mechanisms that provide temporary access keys include IAM roles or the authentication of an IAM Identity Center user. For machines that run outside of AWS you can use AWS Identity and Access Management Roles Anywhere.
Use alternatives to long-term access keys for the AWS Command Line Interface (AWS CLI) or the aws-shell â Alternatives include the following.
AWS CloudShell is a browser-based, pre-authenticated shell that you can launch directly from the AWS Management Console. You can run AWS CLI commands against AWS services through your preferred shell (Bash, Powershell, or Z shell). When you do this, you don't need to download or install command line tools. For more information, see What is AWS CloudShell? in the AWS CloudShell User Guide.
AWS CLI Version 2 integration with AWS IAM Identity Center (IAM Identity Center). You can authenticate users and provide short-term credentials to run AWS CLI commands. To learn more, see Integrating AWS CLI with IAM Identity Center in the AWS IAM Identity Center User Guide and Configuring the AWS CLI to use IAM Identity Center in the AWS Command Line Interface User Guide.
Don't create long-term access keys for human users who need access to applications or AWS services â IAM Identity Center can generate temporary access credentials for your external IdP users to access AWS services. This eliminates the need to create and manage long-term credentials in IAM. In IAM Identity Center, create an IAM Identity Center permission set that grants the external IdP users access. Then assign a group from IAM Identity Center to the permission set in the selected AWS accounts. For more information, see What is AWS IAM Identity Center, Connect to your external identity provider, and Permission sets in the AWS IAM Identity Center User Guide.
Don't store long-term access keys within an AWS compute service â Instead, assign an IAM role to compute resources. This automatically supplies temporary credentials to grant access. For example, when you create an instance profile that is attached to an Amazon EC2 instance, you can assign an AWS role to the instance and make it available to all of its applications. An instance profile contains the role and enables programs that are running on the Amazon EC2 instance to get temporary credentials. To learn more, see Using an IAM role to grant permissions to applications running on Amazon EC2 instances.
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