Question: Alternate CTR mode Suppose we use encrypt using the following formula: Ci = Pi xor E(K, IV+i) where i is the block number Is this

Alternate CTR mode

Suppose we use encrypt using the following formula:

Ci = Pi xor E(K, IV+i) where i is the block number

Is this secure? Why or why not?

If so, how does this relate to CTR mode?

If not, what type of attacks would be a concern?

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