On Tue, Sep 9, 2014 at 9:56 PM, Brendan McMillion < [email protected]> wrote:
> You can post the index and the encrypted corpus on your Twitter, if you > please. It doesn't matter. > That's all and good, but exactly *how* are the contents of the index hidden from the attacker? As a counterexample, let's say we're masking the contents of the index using a deterministic encryption scheme like SIV. An attacker can send you a message containing the word "target" 1000 times, then observe when one of the index's counters changes by ~1000. The ciphertext associated with the counter that increments is likely to be our target word. How are these sorts of attacks prevented? -- Tony Arcieri
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