Use fast data algorithms (2021)
AWS S3 right now supports CRC32, CRC32C, SHA-1, and SHA-256 (https://docs.aws.amazon.com/AmazonS3/latest/userguide/checki...), which is interesting given the announcement to support the four wasn't long ago (https://aws.amazon.com/blogs/aws/new-additional-checksum-alg... seems like they went with what's more widely used than actually faster?