Questions tagged [aws-lambda]

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How to make S3 Presigned url single use only?

Issue: I have a presigned url which is valid for 15 minutes. Upload can be initiated any number of times if the presigned url is captured in this time frame. I want to make an S3 presigned url for ...
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What is the use case of request signing in this mobile app?

The API of a mobile app I was testing is sending the AWS AccessKeyId and SecretKey used for request signing from the AWS Cognito server unencrypted (apart from the regular TLS encryption). Making it ...