# AWSAuth v1.4.1 - Table of Contents > AWS Signature Version 4 Signing Library - Community-maintained fork ## Pages - [ex_aws_auth](readme.md) - Changelog - [CHANGELOG](changelog.md) ## Modules - Core - [AWSAuth](AWSAuth.md): Signs urls or authentication headers for use with AWS requests. - [AWSAuth.Credentials](AWSAuth.Credentials.md): AWS credentials struct for authentication. - Streaming - [AWSAuth.EventStream](AWSAuth.EventStream.md): AWS Signature Version 4 signing for event stream messages. - Plugins - [AWSAuth.Req](AWSAuth.Req.md): Req plugin for AWS Signature V4 authentication.