7 ms·
Found that hard to believe, so I googled it. Not positive this is a trustworthy source, but it sounds like Dropbox does use encryption for files at rest and in
by smaddox 10y ago
Found that hard to believe, so I googled it. Not positive this is a trustworthy source, but it sounds like Dropbox does use encryption for files at rest and in motion: https://www.virtru.com/blog/dropbox-encryption/ https://www.virtru.com/blog/dropbox-encryption/
- Laforet 10y agoDropbox is known to have intergration with PhotoDNA, a state program that matches file signature with a database of known illicit images. This would be impossible if the encryption used is irreversible and as far as I know dropbox never claimed otherwise.
- smaddox 10y agoI'm not claiming it is end-to-end, nor did I expect it to be, but perhaps some people would assume that. I thought you were claiming they don't use encryption at all.
- mikepurvis 10y agoIt's effectively nothing when Dropbox themselves have access to all your files whenever they want.
- jacquesm 10y agoAnd whoever hacks dropbox, yours or all of them.
- doubleunplussed 10y agoCouldn't dropbox hash the images on the client, and upload the encrypted images as well as the hash? No need to upload an unencrypted file to do matching.
- eru 10y agoDepends on what kind of hashing they do: a scheme like yours using a cryptographic hash would be defeated by just randomly changing a single bit in the image (eg appending some garbage bytes at the end); or re-encoding the jpeg. Of course, it could still catch non-techy people.
- Spooky23 10y agoThey do, but Dropbox controls the key and their services can decrypt customer data, so the value of the encryption is limited at best.