I'm trying to use AWS REST API's (because I can't rely on AWSLink`). The sample C# code from Amazon uses this a lot:
var keyedHash = KeyedHashAlgorithm("HMACSHA256") keyedHash.Key = someByteArray keyedHash.ComputHash(data)
But I can't figure out how to translate this to the Wolfram Language. Or maybe I can use SecuredAuthenticationKey directly with AWS? If so I'm not sure what the token endpoints are.