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We now analyze the security of DES double encryption (2DES) by doing a cost-estimate: 2DES(x) = DESK 2 (DESK 1 (x)) For a rough cost

We now analyze the security of DES double encryption (2DES) by doing a cost-estimate: 2DES(x) = DESK₂(DESK₁ (x))

For a rough cost estimate, assume the following costs for hard disk space: $8/10 GByte, where 1 GByte = 10⁹ Byte.

3. Assuming Moores Law, when do the costs move below $1 million?

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