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If Dropbox has one key per user, then how do they do deduplication? We know they do deduplication (http://tinyurl.com/4276pxu http://tinyurl.com/4276pxu) so thi
by canderson 16y ago
If Dropbox has one key per user, then how do they do deduplication? We know they do deduplication (http://tinyurl.com/4276pxu http://tinyurl.com/4276pxu) so this suggests a very small number of keys.
- sorbus 16y agoStoring unencrypted file hashes is the easiest way I can see to do it; then, for deduplication, the file is decrypted using one user's key, and a copy is made and encrypted under the second user's key.