UEFI BIOS Checksums/Signature

Just curious if there are any provided checksums or signatures for the UEFI BIOS downloads provided. I noticed that it looks like there is a checksum that (I'm guessing) is parsed by the UEFI during update inside of the .zip labeled as Checksum.efi but didn't see any documentation anywhere as to exactly how this checksum feature works.
Is it possible to have a signature or SHA checksum provided for the UEFI BIOS downloads?
The SHA512 sum I have for the currently posted version (1.4) that I've downloaded is:
7731f3161805d47cbed637617536cd43b3db023fed6e67b63521a6e48c292c57fbbfde8a860ee11d4edcd4ee1b90d5f4dec5380bb49bcecb2061adc4bba66ba2
Also curious if there is any documentation on how the Checksum.efi feature integrated into the UEFI BIOS functions.
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