alt Hacker NewsUUIDs aren't very good for this use case, a sufficiently large CRC or cryptographic hash is better because it's intrinsically tied to the data's value while UUIDs are not
UUIDs aren't very good for this use case, a sufficiently large CRC or cryptographic hash is better because it's intrinsically tied to the data's value while UUIDs are not
UUIDs are necessary. It's possible for file contents to be identical (e.g. short configuration files may coincidentally coincide over time and space). Would the hash then be unique?
Consider: you want a certain data object, with a given UUID. You can find it anywhere, even from a malicious server. Then look up the hash in a trusted database, verify it. Impossible then for the MITM to fool you. No more virus scanning executables.