title: API Gateway sign request with AWS SDK for .NET
body: <p>I have an API in API Gateway whose Authorization type I have set to AWS_IAM to have API Gateway verify the signature on requests.</p>
  
  <p>And restrict the API endpoint to only specific IAM users.</p>
  
  <p>Now the problem is how can I consume this API from .NET? I cannot create/compute the signature by myself. Does the AWS SDK for .NET offer any helper or utility method/class to have the signature computed which I can attach as the HTTP header to my HTTP request?</p>
  
  <p>Or can the API Gateway SDK for .NET make signed requests to my restricted API Gateway endpoint?</p>