Design Space Exploration for High-Speed Implementation of the MISTY1 Block Cipher

Figure 1

LUT-based FI function formation. (a) FI function. (b) Modifications for the LUT-based FI function. (c) LUT-XOR structure. (d) Reordering of XORs for the formation of LUTs. (e) LUT-based FI function.

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(b)

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(e)