Part number of the object being read. This is a positive integer between 1 and 10,000. … Specifies the customer-provided encryption key for Amazon S3 used to encrypt the data. … If the action is successful, the service sends back an HTTP 200 response. The response returns the following HTTP headers. accept-ranges
https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObject.html

