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Joel T.9
10 years agoNew member | Level 2
FileMetadata checksum
Is there something better than file size to use as a checksum?
Maybe Sha1 or MD5? I didn't see one on the FileMetadata class. It appears "Rev" changes even when the contents haven't changed (ie. on file rename)
17 Replies
- Greg-DB10 years ago
Dropbox Community Moderator
The Dropbox API doesn't offer any sort of file hash or checksum unfortunately, but I'll be sure to pass this along as a feature request.
- Joel T.910 years agoNew member | Level 2
That would be great, "file size" is the only item that appears to be correlated with the actual content, please correct me if I'm wrong, even date changes simply on file name change.
- Greg-DB10 years ago
Dropbox Community Moderator
Yes, even the date would change. The file size will always indicate the size of the file contents, though we don't recommend using that as a way to identify the actual contents of course.
- Brian S.5310 years agoExplorer | Level 3
What do you recommend for identifying changes to the actual file contents?
- Joel T.910 years agoNew member | Level 2
For the time being, I'm fetching the file and calculating the MD5 myself. I'm hoping Dropbox will allow access to the checksum they are already calculating, and I'll just replace with that... Hopefully they will give us access (and it's not a different algorithm).
- Brian S.5310 years agoExplorer | Level 3
So there's no way around needing to download the entire file just to see if it's the same as the local copy?
- Greg-DB10 years ago
Dropbox Community Moderator
Hi Brian, I just replied on the new thread you started, but in short, yes, that's correct, the Dropbox API doesn't currently offer file hashes, so you'd need to download it to check the contents.
- Olaf B.29 years agoNew member | Level 2
Any news on this? Can we hope to see md5sum among the API methods some time soon?
- Greg-DB9 years ago
Dropbox Community Moderator
Apologies, no news on this. I'm not aware of plans for this.
- Matt A.69 years agoNew member | Level 1
I agree, having the ability within the web UI interface to see the file checksums (MD5 and SHA1, at least), would be greatly beneficial in order to help in determining whether files that have been uploaded/downloaded are complete and accurate. An additional tie in to this would be ability to add alerts if a checksum changed - maybe file version history would offer this?
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