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The identification response contains a field for indicating that a responding pillar is a checksum pillar, and therefore only will be able to handle put requests with a certain checksum type.
Existing checksum
The identification response contains a field for delivering the checksum of an existing file. Can be used to determine if a PutFile operation should continue if a file is reported to be aleady already existing on a number of pillars.
Pillar-side checksum verification
The operation request have has a field containing the checksum of the file to be put, used for pillar-side verification that the correct file have has been transfered.
Client-side checksum verification
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The operation request have has a field for requesting a checksum calculation of the file to sent back to the client to verify that the correct file have has been ingested by the pillar.
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