CRC32C digest of the object data. Computed by the Cloud Storage service for
all written objects.
If set in a WriteObjectRequest, service will validate that the stored
object matches this checksum.
128 bit MD5 hash of the object data.
For more information about using the MD5 hash, see
https://cloud.google.com/storage/docs/hashes-etags#json-api.
Not all objects will provide an MD5 hash. For example, composite objects
provide only crc32c hashes.
This value is equivalent to running cat object.txt | openssl md5 -binary
CRC32C digest of the object data. Computed by the Cloud Storage service for
all written objects.
If set in a WriteObjectRequest, service will validate that the stored
object matches this checksum.