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by tux3
1006 days ago
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That would probably be good for the overwhelming majority of users. More rarely, you want to save space/reduce overhead by using a deterministic IV scheme. Either all 0 because you picked a random key and you _really_ care about space saving, or you're very very sure you can safely count IVs (0, 1, 2, ..) without ever reusing a single one. In those rare cases you don't want to transmit the IV, you just know what the value is supposed to be on both sides. More complexity and danger, but a small percentage of users get to save a few bytes. |
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