Introducing a standalone SigV4 signer for the AWS SDK for .NET
Developer Tools Blog
This article introduces a standalone SigV4 signer for the AWS SDK for .NET, enabling developers to sign AWS requests and create presigned URLs for use cases without generated service clients.
- Sign HTTP requests with AWS Signature Version 4 authentication for API Gateway, Lambda function URLs, and raw HTTP services
- Create presigned URLs that carry authentication in the query string with configurable expiry up to 7 days
- Use SigV4SigningHandler as a DelegatingHandler to automatically sign every HttpClient request
- Available in AWSSDK.Core version 4.0.101.0 or later with no additional setup required
- Override service or region per request and control payload signing behavior for large uploads
The standalone signer complements generated service clients for IAM-authorized endpoints and custom HTTP scenarios.
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