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by sidhuko 3073 days ago
For applications using a HMAC token with some sort of timestamp which can be checked for replay attacks. AWS has a good guide: https://docs.aws.amazon.com/AmazonS3/latest/dev/RESTAuthenti....

For users, I'd add a OAuth layer to the application layer and still have this application using a HMAC like above. You want to try keep things 'stateless' when it comes to your API's.