Aws Sas Token. Temporary AWS credentials with specific permissions that are generated by AWS Simple Token Service AWS STS. Returns a set of temporary credentials for an AWS account or IAM user.
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For more information see Temporary Security Credentials in the IAM User Guide. This guide describes the AWS STS API. AWS Security Token Service AWS STS is a web service that enables you to request temporary limited-privilege credentials for AWS Identity and Access Management IAM users or for users that you authenticate federated users.
HMAC is easy to compute in Apigee with the builtin features like the HMAC policy and the hmac static function.
Refers to Shared Access Signature which is Microsofts convention for applying HMAC in other words a keyed-hash message authentication code to produce a cryptographic signature for authentication purposes. This post explains how and when to use SAS Tokens. The AWS STS credentials also provide the permission for interacting with specific components within the SaaS environment. For more information see Temporary Security Credentials in the IAM User Guide.
