Description
You are asked to evaluate the circuit provided (sbox.png) on the 4-bit binary value (x3, x2, x1, x0) = (1, 0, 1, 0) to find the value of y = (y3, y2, y1, y0) at the output of the circuit.
The flag is FCSC{<y>}, with <y> the 4-bit binary output value.
Example: on the 4-bit input (x3, x2, x1, x0) = (1, 0, 0, 0), the output value would be (y3, y2, y1, y0) = (0, 0, 1, 1) and the flag would be FCSC{0011}.
Files
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sbox.png
83.34 KiB – 3f21b9301a3f8267b22e53cdbf7aa4e344b61dca1730a774c06afeed5cce64e7
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