10. The method of claim 1 , wherein: using the chunk initialization vector to encrypt the single data chunk comprises encrypting the single data chunk using a mode of operation with a randomized counter; and the randomized counter is generated based at least in part on the chunk initialization vector.
10. The method of claim 1 , wherein: using the chunk initialization vector to encrypt the single data chunk comprises encrypting the single data chunk using a mode of operation with a randomized counter; and the randomized counter is generated based at least in part on the chunk initialization vector. 11. The method of claim 10 , further comprising ensuring that each value in a counter range used to encrypt the single data chunk is used only once.