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Simplified DES is a toy variant of the DES cipher introduced by Edward F. Schaefer in 1996 for educational purposes. It has an 8-bit block size and a 10-bit key, and uses two rounds, with two 4x2 bit S-boxes.
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P10 to P8 in S-DES
I am new to cryptography. During my learning I am facing a problem with S-DES. I am confused where P10 to P8 come from, and I’m confused about the processing of this algorithm. Does anyone have any go …