title: How to calculate SHA-256 checksum of S3 file content
body: <p>S3 out of the box provides the MD5 checksum of the S3 object content. But I need to calculate the SHA-256 checksum of the file content. The file could be large enough so I do not want to load the file in memory and calculate the checksum, instead I need a solution to calculate the checksum without loading the whole file in memory.</p>